Dresden 2020 – wissenschaftliches Programm
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MA 3.3: Vortrag
Montag, 16. März 2020, 10:00–10:15, HSZ 201
Spin Selective Quasi-Particle Interference in PdCoO2 — •Dibyashree Chakraborti1,2, Chi Ming Yim1, Luke Rhodes1, Seunghyun Khim2, Andrew Mackenzie1,2, and Peter Wahl1 — 1School of Physics and Astronomy, St. Andrews, Scotland, United Kingdom, KY169SS — 2Max Planck Institute of Chemical Physics of Solids, Noethnitzer Strasse, Dresden -01187
The metallic delafossite PdCoO2, which is among the most conductive oxides currently known (at 295 K) , has risen to prominence due to interesting physical effects, such as unusually long mean free paths, leading to hydrodynamic effects being observed in electron flow . Further, recent Angle Resolved Photoemission Spectroscopy (ARPES) studies have reported exciting surface-physics on the CoO2-terminated surface. The CoO2 surface shows evidence of large Rashba spin-splitting, arising from the interplay of energy scales due to strong spin orbit coupling and inversion symmetry breaking at the surface. . In this study, we have identified and investigated the CoO2 termination of PdCoO2 with low temperature Scanning Tunneling Microscopy (STM). We present and discuss the quasi-particle interference imaging of the Rashba spin-split surface state, and the implications for possible spintronics applications.
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