Berlin 2018 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 97: Spintronics (joint session HL/TT)
TT 97.2: Vortrag
Donnerstag, 15. März 2018, 15:15–15:30, EW 201
Magnetoconductance correction in zinc-blende semiconductor nanowires with spin-orbit coupling — •Michael Kammermeier1, Paul Wenk1, John Schliemann1, Sebastian Heedt2, Thomas Gerster2, and Thomas Schäpers2 — 1Institute for Theoretical Physics, University of Regensburg, 93040 Regensburg, Germany — 2Peter Grünberg Institute (PGI-9) and JARA-Fundamentals of Future Information Technology, Forschungszentrum Jülich, 52425 Jülich, Germany
We study the effects of spin-orbit coupling on the magnetoconductivity in diffusive cylindrical semiconductor nanowires [1]. Following up on our former study on tubular semiconductor nanowires [2], we focus now on nanowire systems where no surface accumulation layer is formed but instead the electron wave function extends over the entire cross-section.The derived model is fitted to the data of magnetoconductance measurements of a heavily-doped back-gated InAs nanowire [3] and transport parameters are extracted. At last, we compare our results to previous theoretical and experimental studies and discuss the occurring discrepancies.
[1] M. Kammermeier et al., arXiv:1709.02621 (2017).
M. Kammermeier et al., PRB 93, 205306 (2016).
S. Heedt et al., Nanoscale 7, 18188 (2015).