6 papers
Diverse Trends of Electron Correlation Effects for Properties with Different Radial and Angular Factors in an Atomic System: A case study in Ca
Pradeep Kumar, Cheng-Bin Li, B. K. Sahoo
Atomic properties such as field shift constants, magnetic dipole and electric quadrupole hyperfine structure constants, Landé factors, and electric quadrupole moments that ar…
Temperature Dependence of Nonlinear Susceptibilities in an Infinite Range Interaction Model
Pradeep Kumar, Christopher E. Wagner
We present a model to probe metamagnetic properties in systems with an arbitrary number of interacting spins. Thermodynamic properties such as the magnetization per particle $m(B,T…
Orbiton-Phonon coupling in Ir5+(5d4) double perovskite Ba2YIrO6
Birender Singh, G. A. Cansever, T. Dey +4
Ba2YIrO6, a Mott insulator, with four valence electrons in Ir5+ d-shell (5d4) is supposed to be non-magnetic, with Jeff = 0, within the atomic physics picture. However, recent sugg…
Finite frequency Seebeck coefficient of metals: A memory function approach
Pankaj Bhalla, Pradeep Kumar, Nabyendu Das +2
We study the dynamical thermoelectric transport in metals subjected to the electron-impurity and the electron-phonon interactions using the memory function formalism. We introduce…
Iron Isotope Effect in SmFeAsO0.65 and SmFeAsO0.77H0.12 Superconductors: A Raman Study
Birender Singh, P. M. Shirage, A. Iyo +1
We report the inelastic light scattering studies on SmFeAsO0.65 and SmFeAsO0.77H0.12 with iron isotopes namely 54Fe and 57Fe. In both of these systems under investigation we observ…
Theory of the Dynamical Thermal conductivity of Metals
Pankaj Bhalla, Pradeep Kumar, Nabyendu Das +2
The Mori's projection method, known as memory function method is an important theoretical formalism to study various transport coefficients. In the present work, we calculate the d…