Fermi surface distortion induced by interaction between Rashba and Zeeman effects

Authors
Choi, Won YoungChang, JoonyeonKim, Hyung-junLee, Kyung-JinKoo, Hyun Cheol
Issue Date
2015-05-07
Publisher
AMER INST PHYSICS
Citation
JOURNAL OF APPLIED PHYSICS, v.117, no.17
Abstract
To evaluate Fermi surface distortion induced by interaction between Rashba and Zeeman effects, the channel resistance in an InAs quantum well layer is investigated with an in-plane magnetic field transverse to the current direction. In the magnetoresistance curve, the critical point occurs at similar to 3.5 T, which is approximately half of the independently measured Rashba field. To get an insight into the correlation between the critical point in magnetoresistance curve and the Rashba strength, the channel conductivity is calculated using a two-dimensional free-electron model with relaxation time approximation. The critical point obtained from the model calculation is in agreement with the experiment, suggesting that the observation of critical point can be an alternative method to experimentally determine the Rashba parameter. (C) 2015 AIP Publishing LLC.
Keywords
SPIN; DEPENDENCE; SPIN; DEPENDENCE; Rashba effect; Fermi surface; magnetoresistance
ISSN
0021-8979
URI
https://pubs.kist.re.kr/handle/201004/125452
DOI
10.1063/1.4908147
Appears in Collections:
KIST Article > 2015
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