TY - JOUR
T1 - Quantum oscillations on the surface of InAs epilayer
AU - Yuan, Yahua
AU - Wang, Xuhui
AU - Kosel, Jürgen
AU - Sun, Jian
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by National Natural Science Foundation of China (Grant No. 11804397).
PY - 2019/6/20
Y1 - 2019/6/20
N2 - Indium arsenide (InAs), a narrow-gap semiconductor, has a highly conductive 2-dimensional surface state naturally formed as a result of band bending at the free surface. The Shubnikov–de Haas oscillations have been studied widely in its heterostructures, e.g. 2-dimensional electron gases. However, studies on such a nature surface state are missing. Here, we report a Shubnikov-de Haas (SdH) oscillation that originates from the InAs surface state. Two leading oscillation frequencies in the SdH signal are attributed to Rashba spin-orbit coupling residing in the surface state. We also found for the surface state an effective electron mass of 0.038 m0, heavier than ~0.023 m0 in the bulk. Our study also suggests a Rashba coupling constant in the order of ~10−11 eV m, showing good agreement with previously reported values for InAs.
AB - Indium arsenide (InAs), a narrow-gap semiconductor, has a highly conductive 2-dimensional surface state naturally formed as a result of band bending at the free surface. The Shubnikov–de Haas oscillations have been studied widely in its heterostructures, e.g. 2-dimensional electron gases. However, studies on such a nature surface state are missing. Here, we report a Shubnikov-de Haas (SdH) oscillation that originates from the InAs surface state. Two leading oscillation frequencies in the SdH signal are attributed to Rashba spin-orbit coupling residing in the surface state. We also found for the surface state an effective electron mass of 0.038 m0, heavier than ~0.023 m0 in the bulk. Our study also suggests a Rashba coupling constant in the order of ~10−11 eV m, showing good agreement with previously reported values for InAs.
UR - http://hdl.handle.net/10754/656289
UR - https://linkinghub.elsevier.com/retrieve/pii/S1386947719306290
UR - http://www.scopus.com/inward/record.url?scp=85067656528&partnerID=8YFLogxK
U2 - 10.1016/j.physe.2019.113604
DO - 10.1016/j.physe.2019.113604
M3 - Article
SN - 1386-9477
VL - 114
SP - 113604
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
ER -