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10 papers · 2 filters
Density dependence of the excitation gaps in an undoped Si/SiGe double-quantum-well heterostructure
D. Chen, S. Cai, N. -W. Hsu +7
We report low-temperature magneto-transport measurements of an undoped Si/SiGe asymmetric double quantum well heterostructure. The density in both layers is tuned independently uti…
The thickness dependence of quantum oscillations in ferromagnetic Weyl metal SrRuO
Uddipta Kar, Akhilesh Kr. Singh, Yu-Te Hsu +10
Quantum oscillations in resistivity and magnetization at high magnetic fields are a macroscopic fingerprint of the energy quantization due to the cyclotron motion of quasiparticles…
Room-temperature quantum spin Hall edge state in a higher-order topological insulator BiBr
Nana Shumiya, Md Shafayat Hossain, Jia-Xin Yin +24
Room-temperature realization of macroscopic quantum phenomena is one of the major pursuits in fundamental physics. The quantum spin Hall state, a topological quantum phenomenon tha…
Large Unidirectional Magnetoresistance in Metallic Heterostructures in the Spin Transfer Torque Regime
Ting-Yu Chang, Chih-Lin Cheng, Chao-Chung Huang +5
A large unidirectional magnetoresistance (UMR) ratio of UMR/ is found in W/CoFeB metallic bilayer heterostructures at room temperature. Three different regimes…
Spin-orbit torque characterization in a nutshell
Minh-Hai Nguyen, Chi-Feng Pai
Spin current and spin torque generation through the spin-orbit interactions in solids, of bulk or interfacial origin, is at the heart of spintronics research. The realization of sp…
Enormous Berry-Curvature-Driven Anomalous Hall Effect in Topological Insulator (Bi,Sb)2Te3 on Ferrimagnetic Europium Iron Garnet beyond 400 K
Wei-Jhih Zou, Meng-Xin Guo, Jyun-Fong Wong +14
To realize the quantum anomalous Hall effect (QAHE) at elevated temperatures, the approach of magnetic proximity effect (MPE) was adopted to break the time-reversal symmetry in the…