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Home > People > Faculty > Bose
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Shyamal Kumar Bose
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Professor,
PhD (Simon Fraser), MSc (Dalhousie), MSc (Patna)
Office: MC B200
Phone: (905) 688-5550 Ext. 3415
E-mail: sbose@brocku.ca
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Research Interests
Non-crystalline materials: calculation of the electronic structure,
and transport properties of liquid and amorphous metals, alloys, and
semiconductors.
Electronic structure, stability, and transport properties of quasicrystals.
Vibrational and magnetic properties of amorphous
materials.
Study of superconductivity based on ab initio electronic structure and electron-phonon coupling
calculations.
Phase transitions in localized-spin models.
The above is by no means an exhaustive list. My research interests have evolved over
the years and covered different areas of condensed matter physics,
and I imagine this will be the case in future as well. However,
the main thrust of my research efforts has always been theoretical studies of
electronic and related properties of condensed matter under the rubric of
what is commonly known as ab initio electronic structure studies.
By that we mean calculations that are parameter free- the only input is
the information about the electronic states of the elements that make
up the condensed matter phase. The computational techniques depend
on the nature of the system. Liquids and amorphous solids, because
of their positional or topological disorder, need a different approach
than what can be used for crystalline solids. Random alloys, where there
is always an underlying lattice and the disorder lies only in the occupation
of the lattice sites by elements of type A or B or C etc. (chemical disorder),
can be treated successfully by yet other approaches. Quasicrystals are neither
periodic nor strictly aperiodic, and thus, methods suited for both crystalline
solids and topologically disordered systems have been used for such cases.
What is the use of studying electronic structure? Well, electronic structure forms
the basis of all other studies of the physical properties of the solid; cohesive and
phase stability properties, transport properties, lattice vibrational properties,
magnetism, superconductivity and so on.
Most physical properties of solids and liquids are dictated by the behaviour of
the electrons in the atoms that form the building blocks of these systems. It is
important that we study and understand these electrons as accurately as possible,
so that we can not only better describe the physical properties of these systems
but also predict new phases and new materials and fabricate solids and liquids with
precisely tailored properties. This is a complex problem, residing at the heart of
contemporary materials science and technology programs. My objective is to perform
very accurate quantum mechanical studies of the electrons in various condensed matter
systems and relate these studies to their magnetic, electrical, superconducting and
various other physical properties. I will be working on a class of materials from the
viewpoint of their potential application in 'spintronics', an emerging branch of
applied physics. Electrons have two fundamental properties: charge and spin. Although
the latter invokes in one's mind the picture of a spinning baseball or top, it is
fundamentally a quantum mechanical entity. Until now we have only manipulated the flow of
'charge' in electrical circuits and used it to our advantage to build the enormously
successful 'electronics' industry. 'Spintronics' is the science of manipulating the
other fundamental property of the electron: its spin, and in particular, the flow of
spins or the 'spin current'. It is believed that devices based on 'spintronics' will
overcome several fundamental limitations of the electronic devices, most of which are
related to the loss of energy in the form of heat associated with the flow of charge,
the so-called 'charge current'.
Another one of my projects will be aimed at understanding the behaviour of some of
the Heusler and shape-memory alloys. The latter are also called smart metals, as upon
deformation they remember their original shape to which they can be returned upon
heating. These are useful in the aerospace industry and medical technology. In
addition, I will also be working on superconducting materials (some of them newly
discovered), with the ultimate goal of predicting the existence of new materials with
high superconducting transition temperatures.
I also delve into Monte Carlo studies involving models of spin systems,
structural, and thermodynamic properties of solids and liquids. These are numerical
studies based on the principles of statistical and condensed matter physics.
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Phonon spectrum and electron-phonon coupling (Eliashberg spectral and transport functions)
in hcp Fe: ideal c/a ratio, a = 4.6 a.u. ("Pressure dependence of electron-phonon coupling and superconductivity in hcp Fe: A linear response study",
Phys. Rev. B, 67, 214518 (2003))
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Unit cell of 1/1 Cd$_6$Yb (spacegroup I23).
The Cd (small) and Yb atoms (large) form a shell structure.
In the center Cd atoms are located on four vertices of a cube.
The next shell (the dodecahedral cavity) consists of Cd atoms placed on
the vertices of a dodecahedron.
The third shell is a Cd icosidodecahedron composed of triangles and
pentagons.
Yb atoms are located at the centers of the pentagons.
The remaining Cd atoms and Cd atoms of the icosidodecahedra in
neighboring unit cells (not shown) form a defect triacontahedron.
"Electronic States in 1/1 Cd6Yb and 1/1 Cd6Ca: Relativistic, correlation and structural effects",
Phys. Rev. B 70, 184205 (2004).
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The regular array of 216 atoms shown on the left is for silicon in diamond structure, which turns
into the so-called
WWW model of amorphous Si, a
216-atom cluster of amorphous Si shown on the right...
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... via local rearrangements of bonds and
subsequent relaxation using the Keating potential.
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Electronic structure of
the model is discussed in "Electronic properties of a realistic model
of amorphous silicon", S.K. Bose, K. Winer and O.K. Andersen.
Phys. Rev B 37, 6262 (1988). WWW stands for
F. Wooten, K. Winer and D. Weaire. (see Phys. Rev. Lett.
54, 1392 (1985).)
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Teaching Assignments (2021-22)
PHYS 5P50 - Advanced Quantum Mechanics I
(fall term)
PHYS 3P90 - Classical Mechanics
(fall term)
(Reading course- restricted to one student)
PHYS 3P90 - Classical Mechanics
(winter term)
Teaching Assignments (2020-21)
PHYS 5P50 - Advanced Quantum Mechanics I
(fall term)
PHYS 3P94 - Mathematical Methods in Physics
(winter term)
Publications (since 1990)
- J. Kudrnovský, V. Drchal, S. K. Bose, and I. Turek, "Electronic and transport properties of a new quaternary Heusler alloy CoMnFeSi", Physical Review B 97 214404 (2018).
- S.K. Bose, J. Kudrnovský, and Y.Liu,"Structure and physical properties of quaternary Heusler alloy NiMnCuSb", Journal of Magnetism and Magnetic Materials 444, 338-343 (2017).
- Y.Liu, S.K. Bose, and J. Kudrnovský, "4-d magnetism: Electronic
structure and magnetism of some Mo-based alloys"Journal of Magnetism and Magnetic Materials 423 12-19 (2017).
- Y.Liu, S.K. Bose, and J. Kudrnovský, "Electronic structure and magnetism of
Ge(Sn)TMXTe1−X
(TM = V, Cr, Mn): A first principles study" AIP ADVANCES 6, 125005 (2016).
- A. Januszko, and S.K. Bose,
"Phonon spectra and temperature variation of bulk properties of Cu, Ag, Au and Pt using Sutton–Chen and modified Sutton–Chen potentials"Journal of Physics and Chemistry of Solids 82, 67-75 (2015).
- A. Januszko, and S.K. Bose,
"Temperature-dependence of phonons, solid state properties and liquid structure of noble metals: A comparison of pair-potentials"
Journal of Physics and Chemistry of Solids 77, 30-37 (2015).
- Y.Liu, S.K. Bose, and J. Kudrnovský,
"Half-metallicity, magnetism and electrical resistivity of Sn1−xMnxTe alloys in rock salt and zinc blende structures"
Journal of Magnetism and Magnetic Materials,375, 15-25 (2015).
- Y.Liu, S.K. Bose, and J. Kudrnovský, "Magnetism, half-metallicity and electrical transport properties of V- and Cr-doped
semiconductor SnTe: A theoretical study", Journal of Applied Physics 114,213704 (2013).
Copyright (2013) American Institute of Physics. This article may be downloaded for
personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Pdf File
- L H Obied, D A Crandles, V N Antonov, S K Bose and O Jepsen, "Infrared spectroscopy and the ferromagnetic transition in Gd"(IOP Select article) Journal of Physics: Condensed Matter, 25 , 036002 (2013).
- Yong Liu, Yue Xing, S.K. Bose, and Yong-Hong Zhao, "Half-metallicity and ferromagnetism of TcX (X=C, Si and Ge) in zinc blende structure", Journal of Magnetism and Magnetic Materials, Vol. 327,
Pages 177–184, February 2013
Pdf File
- Y.Liu, S.K. Bose, and J. Kudrnovský, "Half-metallicity and magnetism of GeTe doped with transition metals V, Cr,
and Mn: A theoretical study from the viewpoint of application in spintronics", Journal of Applied Physics 112,053902 (10 pages) (2012); see
also Cond-mat cond-mat:1209.1063
Copyright (2012) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Pdf File
- S. K. Bose, J. Kudrnovský, and V. Drchal, "Magnetism and Electronic Transport in (Cu,Ni)2MnSn Heusler Alloys under Ambient and Elevated Pressures",
World Journal of Engineering, 9(1) 13-22 (2012).
Pdf File
- Yong Liu, S.K. Bose, J. Kudrnovský, "Magnetism and half-metallicity of some Cr-based alloys and their potential for application in spintronic devices",
World Journal of Engineering,9(2)125-132 (2012) and also Vol. 8, Suppelement 1, p.725 (2011). (Proceedings of ICCE-19, The Nineteenth Annual International Conference on Composites
and Nano Engineering, Shanghai, China, July 24-30, 2011) Pdf File
- Shyamal K. Bose, J. Kudrnovský, and V. Drchal, "Magnetism of Quarternary Heusler alloys: (Cu,Ni)2MnSn as a case study",
World Journal of Engineering, Vol. 8, Suppelement 1, p139 (2011)(Proceedings of ICCE-19, The Nineteenth Annual International Conference on Composites
and Nano Engineering, Shanghai, China, July 24-30, 2011).
- S. K. Bose, J. Kudrnovsky, V. Drchal, and I. Turek,
"Pressure dependence of Curie temperature and resistivity in complex Heusler alloys", Phys. Rev. B.84,174422 (2011), also at Cond-mat cond-mat:1010.3025v2
- S. K. Bose, J. Kudrnovsky, V. Drchal, and I. Turek,
"Magnetism of mixed quaternary Heusler alloys: (Ni,T)2MnSn (T=Cu,Pd) as a case study" Physical Review B 82, 174402 (2010); also at Cond-mat cond-mat:1008.4060.
(Selected for the November 8, 2010 issue of Virtual Journal of Nanoscale Science & Technology.)
- Y. Liu, S.K. Bose, J. Kudrnovsky," First-principles theoretical studies of half-metallic
ferromagnetism in CrTe" Physical Review B 82, 094435(2010).(This is a revised version of
cond-mat:1005.2554v1)
- B. Mitrovic and S. K. Bose, Monte Carlo study of the XY-model
on Sierpinski gasket,Phase Transitions, 83,
pp. 572--580 (2010) (cond-mat/1006.2138<
/a>).
- S.K. Bose, and J. Kudrnovsky, "Exchange interactions and Curie temperatures in Cr-based alloys in Zinc Blende structure: volume- and composition-dependence from first-principles calculations", Physical Review B 81, 054446 (2010), also at cond-mat:0912.1760v2.
- S.K. Bose,"Electron-phonon coupling and spin-fluctuations in 3- and 4-$d$ transition
metals: implications for superconductivity and its pressure-dependence",
Journal of Physics: Condensed Matter, 21 , 025602 (2009).
Pdf File
- S.K. Bose and J. Kortus, "Electron-phonon coupling in metallic solids from density
functional theory", in Vibronic and electron-phonon interactions
and their role in modern chemistry and physics , Transworld Research Network,
Kerala, India, ISBN: 978-81-7895-336-6, editor: Takashi Kato, pp. 1-62 (2009).
Original manuscript
Publisher's version
- S.K. Bose, "Linear response results for phonons and electron-phonon coupling in hexagonal close packed Sc- spin fluctuations, and implications for superconductivity", Journal
of Physics: Condensed Matter , 20 , 045209 (2008).
Pdf File
- Qiuping Bian, S.K. Bose, and R.C. Shukla,
"Vibrational and Thermodynamic Properties of Metals from a model
Embedded-Atom Potential", Journal of Physics and Chemistry of Solids , Vol. 69 , 168-181
(2008).
Pdf File
- J. Dolinsek, P.J. McGuiness, M. Klanjsek, I. Smiljanic, A. Smontara, E.S. Zijlstra, S.K. Bose,
I.R. Fisher, M.J. Kramer, and P.C. Canfield,
" Reply to
'Comment on `Extrinsic origin of the insulating behavior of polygrain icosahedral Al-Pd-Re quasicrystals' " Physical Review B 76, 216202 (2007).
- J. Dolinsek, P.J. McGuiness, M. Klanjsek, I. Smiljanic, A. Smontara, E.S. Zijlstra, S.K. Bose,
I.R. Fisher, M.J. Kramer, and P.C. Canfield,
"Extrinsic origin of the insulating behavior of polygrain icosahedral Al-Pd-Re quasicrystals",
Physical Review B 74, 134201 (2006).
- T. Keller, P. Aynajian, K. Habicht, L. Boeri, S.K. Bose, and B. Keimer,
"Momentum-resolved
electron-phonon interaction in lead determined by neutron resonance spin-echo spectroscopy",
Physical Review Letters 96, 225501 (2006) .
- E.S. Zijlstra and S.K. Bose, " Negative valence of Mn in i-Al-Pd-Mn quasicrystals", Philosophical
Magazine 86 (6-8) Feb-Mar : 717-723 (2006).
- S.K. Bose, and E.S. Zijlstra,
"Electronic structure, electron-phonon coupling and superconductivity of isotypic noncentrosymmetric
crystals Li2Pd3B and Li2Pt3B", Physica C: Superconductivity, Volume 432, Issues 3-4,
173-181 (2005).
Pdf File
- S.K. Bose, T. Kato, and O. Jepsen,
"Superconductivity in boron under pressure: A full-potential linear muffin-tin orbitals study"
Phys. Rev. B 72, 184509 (2005).
- E. S. Zijlstra, S.K. Bose, M. Klanjsek, P. Jeglic, and J. Dolinsek,
"Ab initio study of icosahedral Al-Pd-Mn quasicrystals: Structural model, electric field gradients, and negative valence of Mn", Phys. Rev. B 72, 174206 (2005).
- E. S. Zijlstra, S.K. Bose, and J. Dolinsek,
"Structural model and electronic structure of icosahedral Al-Ga-Pd-Mn quasicrystal",
Phys. Rev. B 72, 092203 (2005).
- E. S. Zijlstra, S.K. Bose, and R. Tamura, "Electronic States in 1/1 Cd6Yb and 1/1 Cd6Ca: Relativistic, correlation and
structural effects", Phys. Rev. B 70, 184205 (2004).
- E. S. Zijlstra and S. K. Bose,
"Atomic Structure, Electronic States, and Stability of Icosahedral Quasicrystals",
Mat. Res. Soc. Symp. Proc. Vol. 805, LL4.3.1-7 (2004).
- E. S. Zijlstra, J. Kortus, M. Krajci, Z. M. Stadnik, and S. K. Bose,
"Structure, electronic density of states and electric field gradients of icosahedral AlCuFe: An ab initio study of the original and a modified Cockayne
model", Phys. Rev. B 69, 094206 (2004).
- K. Samokhin, E.S. Zijlstra, and S.K. Bose,"CePt3Si: An Unconventional Superconductor without Inversion Center"
Phys. Rev. B,69, 094514 (2004).
- B. Mitrovic, K. Samokhin, and S.K. Bose, Anisotropy in the helicity modulus of a
quantum 3D XY-model: application to YBCO J. Phys.: Condens. Matter, 15, 7563-7569 (2003).
- B. Mitrovic, S.K. Bose, and K. Samokhin. Anisotropy
in the helicity modulus of a 3D XY-model: application to YBCO. J. Phys.: Cond.
Matter, 15, 2207 (2003).
- E.S. Zijlstra and S.K. Bose. Detailed ab
initio electronic structure study of two approximants to Al-Mn based icosahedral
quasicrystals. Phys. Rev. B, 67, 224204 (2003).
- S.K.Bose, O.V. Dolgov, J. Kortus, O. Jepsen, and O.K. Andersen.
Pressure-dependence of electron-phonon coupling and
the superconducting phase in hcp Fe: A linear response study. Phys. Rev. B,
67, 214518-28 (2003).
- F.S. Razavi, S.K. Bose, and H. Ploczek. Effect of
pressure on the superconductivity of MgB2. Physica C, 366,
73-9, 2002.
- K. Lagarec, D.G. Rancourt, S.K. Bose, and R.A. Dunlap, "Observation of a composition-controlled high-moment/low-moment transition in the face
centered cubic Fe-Ni system", Phase Transition 75, 211-9 (2002).
- K. Lagarec, D.G. Rancourt, S.K. Bose, B. Sanyal, and R.A. Dunlap.
Observation of a composition-controlled high-moment/low-moment transition in the face
centered cubic Fe-Ni system: Invar effect is an expansion, not a contraction.
J. Magn. Magn. Mater., 236, 107-30, 2001.
- B. Sanyal, S.K. Bose, V. Drchal, and J. Kudrnovsky.
Ordering and segregation in X-Pt (X=V, Cu, and Au) random alloys. Phys. Rev. B,
64, 134111, 2001.
- B. Sanyal and S.K. Bose. Electronic structure
and related thermal and magnetic properties of some ternary Invar alloys.
Phys. Rev. B, 62, 12730-42, 2000.
- S.K. Bose. Electronic structure of
liquid mercury.
J. Phys.: Condens. Matter, 11 4597-4615, 1999.
- S.K. Bose. Electronic structure and
related properties of metallic glasses: Linear muffin-tin approach.
Metall. Mater. Trans. A, 29A, 1853-63, July 1998.
- S.K. Bose. Tight-binding calculations
of electronic structure and resistivity of liquid and amorphous
metals.
Mat. Res. Soc. Symp. Proc., 491, edited by P.E.A. Turchi, A. Gonis, and
L. Colombo (MRS, 1998) 105-16, 1998.
- R.W. Reid, S.K. Bose, and B. Mitrovic.
Monte Carlo study of the XY model on
Penrose lattices.
J. Phys.: Condens. Matter, 10, no. 10, 2303-21,
1998.
- R.W. Reid, S.K. Bose, and B. Mitrovic.
Possible two-dimensional XY spin/gauge
glasses on periodic and quasiperiodic lattices.
J. Phys.: Condens. Matter, 9, no. 34, 7141-59,
1997.
- S.K. Bose, V. Drchal, J. Kudrnovsky, O. Jepsen, and O.K. Andersen.
Theoretical study of ordering in Fe-Al alloys
based on a density-functional generalized-perturbation method.
Phys. Rev. B, 55, 8184-93, 1997.
- R.W. Reid, S.K. Bose, and B. Mitrovic.
Classical planar model on frustrated two-
dimensional quasiperiodic lattices: possibility of spin/gauge glass phase.
Physica A, 239, 156-65, 1997.
- R.W. Reid, S.K. Bose, and B. Mitrovic.
Spin-glass behavior of frustrated
two-dimensional Penrose lattice in the classical planar model.
Phys. Rev. B, 54, R740, 1996.
- S.K. Bose, J. Kudrnovsky, V. Drchal, O. Jepsen and O.K. Andersen.
Ordering tendencies in Fe-Al alloys in
magnetic and non-magnetic models.
Mater. Sci. Eng. B, 37, 237, 1996.
- R. F. Sabiryanov, S.K. Bose, and S.E. Burkov.
Electronic structure and stability
of a model of the decagonal quasicrystal Al-Cu-Co.
J. Phys.: Condens. Matter, 7, 5437-59, 1995.
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- R. F. Sabiryanov, S.K. Bose, and O.N. Mryasov.
Effect of topological disorder on the
itinerant magnetism of Fe and Co.
Phys. Rev. B, 51, 8958-73, 1995.
- F. Hamed, F. S. Razavi, S. K. Bose, and T. Startseva,
"Spin fluctuations in metallic glasses Zr75(NixFe1-x)25 at ambient and higher pressures,",
Phys. Rev. B 529674-9678 (1995).
- R. F. Sabiryanov and S.K. Bose.
The decagonal plane-wave model for
2- and 3-D quasicrystals.
J. Phys.: Condens. Matter, 6, 6197-210, 1994.
- S. K. Bose, O. Jepsen, and O. K. Andersen.
An electronic structure and
resistivity calculation for liquid La.
J. Phys.: Condens. Matter, 6, 2145, 1994.
- J. Kudrnovsky, J.V. Drchal, S.K. Bose, I. Turek, and A. Pasturel.
Electronic properties of
random surfaces. Comput. Mater. Sci., 2,
379, 1994.
- S. K. Bose, O. Jepsen, and O. K. Andersen.
Real-space calculation of the electrical
conductivity of liquid 3-d transition metals.
Phys. Rev. B, 48, 4265, 1993.
- J. Kudrnovsky, I. Turek, V. Drchal, P. Weinberger, S.K. Bose, and
A. Pasturel.
Self-consistent Green's function method
for surfaces of random alloys. Phys. Rev. B,
47, 16525, 1993.
- S. K. Bose, S. Satpathy, and O. Jepsen.
Semiconducting CsSnBr3.
Phys. Rev. B, 47, 4276, 1993.
- J. Kudrnovsky, S. K. Bose, and V. Drchal.
Origins of Surface Alloy Formation:
Cu(001)C(2x2)-Pd as a Case Study. Phys. Rev. Lett.,
69, 308, 1992.
- S. K. Bose, J. Kudrnovsky, O. Jepsen, and O. K. Andersen,
"Electronic structure of ordered and disordered CuxPd1-x alloys via the linear-muffin-tin-orbitals method",
, Phys. Rev. B 458272-8282 (1992).
- J. Kudrnovsky, I. Turek, V. Drchal, P. Weinberger, N. E. Christensen, and S. K. Bose,
"Self-consistent Green's-function method for random overlayers",
Phys. Rev. B 464222-4228 (1992).
- R. C. Shukla, S. K. Bose, and R. F. Delogu,
"Comparison of Monte Carlo and anharmonic-lattice-dynamics results for the thermodynamic properties and atomic mean-square
displacement of Xe using the Morse potential", Phys. Rev. B 45, 12812-12820 (1992).
- J. Kudrnovsky, S.K. Bose, and O. Jepsen, Dependence of the electronic structure on local atomic order in ternary Cu2NiZn alloys. Phys. Rev. B, 43, 14409 (1991).
- F. Hamed, F.S. Razavi, H. Zaleski, and S.K. Bose, Pressure dependence of spin fluctuations in metallic glasses Ni25Zr75 and Fe100-xZrx (x=75,80). Phys. Rev. B, 43, 3649 (1991).
- J. Kudrnovsky, S. K. Bose, and O.K. Andersen, Comparative study of the electronic structure of ordered, partially ordered and disordered phases of the Cu3Au alloy. Phys. Rev. B, 43, 4613 (1991).
- S.K. Bose, J. Kudrnovsky, F.S. Razavi and O.K. Andersen, Pressure dependence of electronic densities of states and superconducting transition temperatures in NiZr glasses. Phys. Rev. B 43, 110 (1991).
- S.K. Bose, J. Kudrnovsky, O. Jepsen and O.K. Andersen, Calculation of electronic structure of ordered and disordered binary (AB) alloys using the LMTO parameters of the pure (A and B) Components, in High Temperature Ordered Intermetallic Alloys IV. MRS Publication 213, ed. by L. Johnson, D.P. Pope and J.O. Stiegler. Materials Research Society, Pittsburgh (1991).
- S.K. Bose, J. Kudrnovsky, O. Jepsen and O.K. Andersen, Electronic structure of ordered and disordered Cu50 Pd50 and Cu75Pd25 alloys, in High Temperature ordered Intermetallic Alloys IV. MRS Publication, 213, ed. by L. Johnson, D.P. Pope and J.O. Stiegler. Materials Research Society, Pittsburgh, 95 (1991).
- J. Kudrnovsky, S.K. Bose and O.K. Andersen, Electronic structure of sputter-deposited Fe-Cu and Fe-Ag alloy films, J. Phys. Soc. Jpn. 59, 4511 (1990).
- J. Kudrnovsky, S.K. Bose and O.K. Andersen, Electronic structure of sputter-deposited alloy films: Application to the Fe-Cu-Ag system, J. Phys.: Cond. Matter 2, 6847 (1990).
- S.K. Bose, J. Kudrnovsky, M. van Schilfgaarde, P. Bloechl, O. Jepsen, M. Methfessel, A.T. Paxton, and O.K. Andersen, Electronic structure of ordered and disordered Pd3Fe. J. Magnetism and Magnetic Materials 87, 97 (1990).
- S.K. Bose, J. Kudrnovsky, I.I. Mazin, and O.K. Andersen, Effect of disorder on the electronic structure of palladium, Phys. Rev. B 41, 7988 (1990).
- S.K. Bose and J.D. Poll, Roton and vibron density of states in solid parahydrogen, Can. J. Phys. 68, 159 (1990)
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