Interplay of quantum spin Hall effect and spontaneous time-reversal symmetry breaking in electron-hole bilayers. I. Transport properties

T Paul, VF Becerra, T Hyart - Physical Review B, 2022 - APS
The band-inverted electron-hole bilayers, such as InAs/GaSb, are an interesting playground
for the interplay of quantum spin Hall effect and correlation effects because of the small …

Electrically tuning many-body states in a Coulomb-coupled InAs/InGaSb double layer

XJ Wu, W Lou, K Chang, G Sullivan, A Ikhlassi, RR Du - Physical Review B, 2019 - APS
We study the transport properties of an electron-hole double layer consisting of barrier-
separated InAs/InGaSb quantum wells. We focus on measurements of four-terminal …

Interplay of quantum spin Hall effect and spontaneous time-reversal symmetry breaking in electron-hole bilayers. II. Zero-field topological superconductivity

T Paul, VF Becerra, T Hyart - Physical Review B, 2022 - APS
It has been proposed that band-inverted electron-hole bilayers support a phase transition
from an insulating phase with spontaneously broken time-reversal symmetry to a quantum …

In-plane magnetic field induced density wave states near quantum spin Hall phase transitions

Y Zeng, F Xue, AH MacDonald - Physical Review B, 2022 - APS
We study the influence of an in-plane magnetic field and Coulomb interactions on the
physics of quantum spin Hall insulators, like those in InAs/GaSb and HgTe/CdTe quantum …

Realization of independent contacts in barrier-separated InAs/GaSb quantum wells

X Wu, J Wang, M Huang, S Yan, RR Du - Applied Physics Letters, 2023 - pubs.aip.org
InAs/GaSb double quantum wells separated by a 100 Å AlSb middle barrier are grown by
molecular beam epitaxy. We report a nanofabrication technique that utilizes the surface …

Dissipationless Spin-Charge Conversion in Excitonic Pseudospin Superfluid

Y Zhang, R Shindou - Physical Review Letters, 2022 - APS
Spin-charge conversion by the inverse spin Hall effect or inverse Rashba-Edelstein effect is
prevalent in spintronics but dissipative. We propose a dissipationless spin-charge …

Interaction-induced crossover between weak antilocalization and weak localization in a disordered InAs/GaSb double quantum well

V Sazgari, G Sullivan, II Kaya - Physical Review B, 2020 - APS
We present a magnetotransport study in an InAs/GaSb double quantum well structure in the
weak localization regime. As the charge carriers are depleted using a top-gate electrode, we …

Antiparticle of exciton in semimetals

L Kong, R Shindou, Y Zhang - Physical Review B, 2022 - APS
An emergent quantized field enriches quantum many-body systems. We propose an
antiparticle analog of the exciton in semimetals as an emergent collective mode in …

Exciton Condensation in Landau Levels of Quantum Spin Hall Insulators

HM Peng, Z Wang, L Zhang - arXiv preprint arXiv:2403.04691, 2024 - arxiv.org
The interplay of band topology and electron interactions can lead to novel quantum states of
matter. In this work, we theoretically study the quantum spin Hall insulator (QSHI) in a …

激子绝缘体

娄文凯, 常凯 - 物理, 2022 - wuli.iphy.ac.cn
激子绝缘体是20 世纪60 年代初由诺贝尔物理学奖获得者莫特提出的一种新物相. 众所周知,
激子是固态系统中最典型的集体激发之一, 简单地可视为电子—空穴由于库仑相互作用而形成的 …