|
Research Interests
Theoretical Condensed Matter Physics:
Electronic Structure and Magnetism in Solids
The principal focus of my research involves a theoretical description
of the physical phenomena in solids resulting from the fundamental behaviour
of the interacting electrons. A variety of computational and analytical tools
are employed, with some developed as needed. Methods such as the Density-Functional
Calculations, Exact Diagonalization Techniques, the Quantum Monte Carlo Methods,
and sometimes the diagramatic perturbation theory are used to obtain insights
into the physics of the real materials. Everyday tools in our study include
numerical methods such as the solution of differential equations, diagonalization
of large matrices, solution of the Euler-Lagrange problem, etc.
Some of our ongoing research topics include:
(i) Colossal magnetoresistive (CMR) manganites
(ii) Dilute magnetic semiconductors and Spintronics
(iii) Semiconductor and Magnetic oxides interfaces
(iv) Photonic Band Gap materials
Selected Publications
1.
S. Satpathy, Eigenstates of Wannier Excitons near a Semiconductor
Surface, Phys. Rev. B 28, 4585 (l983)
2. A. K. McMahan, R.
M. Martin, and S. Satpathy, Calculated Effective Hamiltonian for La2Cu04
and Solution in the Impurity Anderson Approximation, Phys. Rev. B
38, 6650 (l988).
3. Z. Zhang and S. Satpathy, Electromagnetic
Wave Propagation in Periodic Structures: Bloch Wave Solution of the Maxwell's
Equations, Phys. Rev. Lett. 65, 2650 (1990).
4. Z. Zhang and S. Satpathy, Electron
States, Magnetism, and the Verwey Transition in Magnetite, Phys. Rev. B
44, 13 319 (1991).
5. M. Springborg, S. Satpathy, N. Malinowski,
U. Zimmermann, and T. P. Martin, Electronic Shell Structure and Relative
Abundances of Cesium-Coated C60, Phys. Rev. Lett. 77, 1127 (1996).
6. S. Satpathy, Dynamical Jahn-Teller
Effect, Double Exchange, and the Isotope Shift in the Manganites: A Toy
Model, J. Phys.: Condens. Matter 10, L501 (1998)
7. S. Pathak and S. Satpathy, Self-Trapped
Magnetic Polaron: Exact Solution of a Continuum Model in One Dimension, Phys.
Rev. B 63, 214413 (2001)
8. Z. Popovic and S. Satpathy, Origin
of Charge-Orbital Order in the Half-Doped Manganites, Phys. Rev. Lett. 88,
197201 (2002)
9. S. Mishra and S. Satpathy, One-Dimensional
Photonic Crystal: The Kronig-Penney Model, Phys. Rev. B 68, 045121 (2003)
10. H. Meskine, T. Saha-Dasgupta,
and S. Satpathy, Is the self-trapped magnetic polaron energetically stable
in the electron doped manganites?, Phys. Rev. Lett. 92, 056401 (2004)
11. Z. S. Popovic, S. Satpathy, and
W. C. Mitchel, Electronic structure of the substitutional versus interstitial
manganese in GaN, Phys. Rev. B (RC), 70, 161308 (2004)
|