Journal Article

FZJ-2016-04069

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Weak (anti)localization in tubular semiconductor nanowires with spin-orbit coupling

Kammermeier, M. (Corresponding author) ; Wenk, P. ; Schliemann, J. ; Heedt, S.FZJ* ; Schäpers, T.FZJ*

2016
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/11987  doi:10.1103/PhysRevB.93.205306

Abstract: We compute analytically the weak (anti)localization correction to the Drude conductivity for electrons in tubular semiconductor systems of zinc-blende type. We include linear Rashba and Dresselhaus spin-orbit coupling (SOC) and compare wires of standard growth directions ⟨100⟩,⟨111⟩, and ⟨110⟩. The motion on the quasi-two-dimensional surface is considered diffusive in both directions: transversal as well as along the cylinder axis. It is shown that Dresselhaus and Rashba SOC similarly affect the spin relaxation rates. For the ⟨110⟩ growth direction, the long-lived spin states are of helical nature. We detect a crossover from weak localization to weak antilocalization depending on spin-orbit coupling strength as well as dephasing and scattering rate. The theory is fitted to experimental data of an undoped ⟨111⟩ InAs nanowire device which exhibits a top-gate-controlled crossover from positive to negative magnetoconductivity. Thereby, we extract transport parameters where we quantify the distinct types of SOC individually.

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Contributing Institute(s):

1. Halbleiter-Nanoelektronik (PGI-9)
2. JARA-FIT (JARA-FIT)

Research Program(s):

1. 522 - Controlling Spin-Based Phenomena (POF3-522) (POF3-522)

Appears in the scientific report 2016

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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