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TT: Fachverband Tiefe Temperaturen
TT 32: Focus Session: Spin Phenomena in Chiral Molecular Systems I (joint session O/TT)
TT 32.5: Talk
Tuesday, March 19, 2024, 12:15–12:30, MA 141
Spin-dependent transmission and CISS effect in PdGa — •Mayra Peralta1, Iñigo Robredo1,2, Xia Wang1, Maia Vergniory1,2, and Claudia Felser1 — 1Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany — 2Donostia International Physics Center, 20018 Donostia-San Sebastian, Spain
Chiral crystalline materials are an excellent framework to study Chiral Induced Spin Selectivity-related effects, since they can be grown and designed in a more controllable way and they are ordered systems where impurities and localization effects are minimised with respect to molecules. Besides, chiral crystals present topologically protected surface states and momentum locked spin states that open the way for using chiral couplings to control quantum information. In this talk I will present an analytical-computational model using a two-terminal setup and the Landauer formalism to compute spin-dependent transmission in chiral crystals, specifically in those of the group B20 as PdGa. Based on the results obtained with this model, I will evaluate the importance of chirality and spin orbit coupling in this material, to give rise to the spin-dependent transmission observed.
Keywords: Chirality; CISS effect; Spin Orbit Coupling