Extended and interacting bound states in elemental superconductors
- September 1 at 16:00 - 17:15, 2021 (JST)
- Dr. Levente Rózsa (Condensed Matter Physics, University of Konstanz, Germany) Edit
- via Zoom
Combining magnetism with superconductivity leads to the emergence of localized states, including Majorana bound states predicted to be relevant for topological quantum computation. In this talk, I discuss how these bound states are influenced by the details of the electronic structure. It will be shown how the shape of the Fermi surface leads to a long-ranged anisotropic extension of Yu-Shiba-Rusinov states in the vicinity of magnetic impurities . The same type of Fermi surface will be demonstrated to give rise to topologically trivial Caroli-de Gennes-Matricon bound states in vortex cores , with similar spatial profiles to those of topological Majorana bound states. The role of spin-orbit coupling will be discussed in the hybridization of Yu-Shiba-Rusinov bound states of dimers with ferromagnetic and antiferromagnetic spin alignments . The general theoretical concepts will be illustrated by experimental realizations in specific materials.
*Detailed information about the seminar refer to the email.
- H. Kim, L. Rózsa, D. Schreyer, E. Simon, and R. Wiesendanger, Nat. Commun. 11, 4573 (2020).
- H. Kim, Y. Nagai, L. Rózsa, D. Schreyer, and R. Wiesendanger, arXiv:2105.01354.
- P. Beck, L. Schneider, L. Rózsa, K. Palotás, A. Lászlóffy, L. Szunyogh, J. Wiebe, R. Wiesendanger, Nat. Commun. 12, 2040 (2021).