Open AccessRoom-Temperature Nonreciprocal Charge Transport in an InAs-Based Rashba Channel
Author(s) -
Jeong Ung Ahn,
Ki Hyuk Han,
Seong Been Kim,
OukJae Lee,
Hyungjun Kim,
Hyun Cheol Koo
Publication year - 2022
Publication title -
ecs journal of solid state science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.488
H-Index - 51
eISSN - 2162-8777
pISSN - 2162-8769
DOI - 10.1149/2162-8777/ac6625
Subject(s) - condensed matter physics , materials science , amplitude , charge (physics) , ferromagnetism , electron transport chain , hall effect , physics , magnetic field , optics , quantum mechanics , chemistry , biochemistry
Nonreciprocal charge transport is observed in a non-centrosymmetric system without a ferromagnetic layer. To observe the nonreciprocity of the Rashba system, an InAs-based two-dimensional electron gas channel is utilized and the angular dependent harmonic Hall measurement is performed. From the amplitude of the curve, a nonreciprocal coefficient of 1.36 A −1 T −1 is extracted at 1.9 K. While the extracted value of the nonreciprocal coefficient decreases down to 0.44 A −1 T −1 at 300 K, we can clearly observe the nonreciprocal charge transport at room temperature. In addition, the independent transport measurements clarify that the amplitude of nonreciprocal coefficient is closely connected with the strength of the Rashba effect.