Sashi Satpathy
Professor of Physics
UMC

 Sashi Satpathy    
Office: 414 Physics Building
Phone: 573-882-4838
E-mail: satpathys@missouri.edu
Webpage: http://web.missouri.edu/~satpathys/
Biographical Information: Ph.D., University of Illinois at Urbana Champaign, 1982


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)