Events
Roxana Margine, Binghamton University SUNY
"Ab initio theory of superconductivity"
Abstract: Prediction of key superconducting properties such as the critical temperature and the superconducting energy gap remains one of the outstanding challenges in modern electronic structure theory. Up until recently, estimation of the critical temperature in conventional superconductors has been done primarily with the semiempirical McMillan’s approach which relies on the averaged-out strength of the electron-phonon coupling. In this talk, I will introduce an advanced computational method that combines the fully anisotropic Migdal-Eliashberg theory with electron-phonon interpolation based on maximally-localized Wannier functions. The methodology, implemented in the open-source EPW package [1], allows one to perform highly accurate calculations of the anisotropic temperature-dependent superconducting gap and critical temperature. I will illustrate the performance of this computational technique on several prototypical systems.
Elena Roxana Margine is Associate Professor of Physics & Materials Science and Engineering at Binghamton University – State University of New York (USA). She earned her Ph.D. in Physics at Pennsylvania State University (USA). Before joining Binghamton University in 2013, she was a Postdoctoral Researcher at the University of Lyon (France) and a Marie Curie Fellow at the University of Oxford (UK). Her research is dedicated primarily to the development and application of advanced computational methods for modeling superconducting and transport properties of materials.
