3.9k citations · 6.7k across the 43 of their papers we have counts for
43 papers
Nonlinear scalings emerge in a linear regime: an observation in electrokinetic flow
Jin'an Pang, Guangyin Jing, Xiaoqiang Feng +2
In nonlinear systems, small perturbations are conventionally attributed to negligible nonlinearity, justifying linear approximations. Here, we uncover a notable exception to this p…
Presence versus absence of charging energies in PbTe quantum dots
Yuhao Wang, Lining Yang, Wenyu Song +18
Charging energy () is essential in quantum dot (QD) devices. Previous studies on PbTe QDs have reported both the presence and absence of . To resolve this ambiguity, we v…
Magnetic properties of molecular beam epitaxy-grown ultrathin Cr2Ge2Te6 films down to monolayer limit on Si substrates
Pengfei Ji, Ruixuan Liu, Tianchen Zhu +13
Cr2Ge2Te6, a prototypical van der Waals ferromagnetic semiconductor, have attracted significant interest for its potential applications in high-performance spintronics. However, th…
Strong enhancement of g-factor in PbTe-Pb hybrid nanowires
Shan Zhang, Wenyu Song, Zonglin Li +17
We report large Lande g-factors observed in PbTe-Pb hybrid nanowires. The g-factor can reach 83, significantly larger than those in bare PbTe nanowires (typically below 20). We att…
Anisotropy of PbTe nanowires with and without a superconductor
Zonglin Li, Wenyu Song, Shan Zhang +17
We investigate the anisotropic behaviors in PbTe and PbTe-Pb hybrid nanowires. In previous studies on PbTe, wire-to-wire variations in anisotropy indicate poor device control, posi…
Universally optimizable strategy for magnetic gaps towards high-temperature quantum anomalous Hall states via magnetic-insulator/topological-insulator building-blocks
Zhe Li, Feng Xue, Xin-Yi Tang +4
Optimizing the magnetic Zeeman-splitting term, specifically the magnetic gap of the topological surface states (TSSs), is a crucial issue and central challenge in advancing higher-…
Quantized Andreev conductance in semiconductor nanowires
Yichun Gao, Wenyu Song, Yuhao Wang +20
Clean one-dimensional electron systems can exhibit quantized conductance. The plateau conductance doubles if the transport is dominated by Andreev reflection. Here, we report quant…
Chern insulator phase realized in dual-gate-tuned MnBi2Te4 thin films grown by molecular beam epitaxy
Yunhe Bai, Yuanzhao Li, Ruixuan Liu +19
The intrinsic magnetic order, large topological-magnetic gap and rich topological phases make MnBi2Te4 a wonderful platform to study exotic topological quantum states such as axion…
Interplay between electronic dephasing and localization in finite-sized Chern insulator
Yunhe Bai, Yuanzhao Li, Jianli Luan +14
Anderson localization is anticipated to play a pivotal role in the manifestation of the quantum anomalous Hall effect, akin to its role in conventional quantum Hall effects. The si…
SQUID oscillations in PbTe nanowire networks
Yichun Gao, Wenyu Song, Zehao Yu +18
Network structures by semiconductor nanowires hold great promise for advanced quantum devices, especially for applications in topological quantum computing. In this study, we creat…
Gate-tunable subband degeneracy in semiconductor nanowires
Yuhao Wang, Wenyu Song, Zhan Cao +20
Degeneracy and symmetry have a profound relation in quantum systems. Here, we report gate-tunable subband degeneracy in PbTe nanowires with a nearly symmetric cross-sectional shape…
Enhanced superconductivity in PbTe-In hybrids
Zuhan Geng, Fangting Chen, Yichun Gao +18
We report the realization of epitaxial indium thin films on PbTe nanowires. The film is continuous and forms an atomically sharp interface with PbTe. Tunneling devices reveal a har…
Reducing disorder in PbTe nanowires for Majorana research
Wenyu Song, Zehao Yu, Yuhao Wang +19
Material challenges are the key issue in Majorana research where surface disorder constrains device performance. Here, we tackle this challenge by embedding PbTe nanowires within a…
Correlation between magnetic domain structures and quantum anomalous Hall effect in epitaxial MnBi2Te4 thin films
Yang Shi, Yunhe Bai, Yuanzhao Li +16
We use magnetic force microscopy (MFM) to study spatial uniformity of magnetization of epitaxially grown MnBi2Te4 thin films. Compared to films which exhibit no quantum anomalous H…
Reentrant quantum anomalous Hall effect in molecular beam epitaxy-grown MnBi2Te4 thin films
Yuanzhao Li, Yunhe Bai, Yang Feng +16
In this study, we investigate intrinsic magnetic topological insulator MnBi2Te4 thin films grown by molecular beam epitaxy. We observe a reentrant quantum anomalous Hall effect whe…
Multimechanism quantum anomalous Hall and Chern number tunable states in germanene (silicene, stanene)/BiTe heterostructures
Zhe Li, Jiatong Zhang, Xiyu Hong +2
By constructing germanene (silicene, stanene)/BiTe ( = 3d-transition elements) heterostructures, we discovered and designed multimechanism quantum-anomalous-Hall (QAH…
Selective-Area-Grown PbTe-Pb Planar Josephson Junctions for Quantum Devices
Ruidong Li, Wenyu Song, Wentao Miao +17
Planar Josephson junctions are predicted to host Majorana zero modes. The material platforms in previous studies are two dimensional electron gases (InAs, InSb, InAsSb and HgTe) co…
Ballistic PbTe Nanowire Devices
Yuhao Wang, Fangting Chen, Wenyu Song +18
Disorder is the primary obstacle in current Majorana nanowire experiments. Reducing disorder or achieving ballistic transport is thus of paramount importance. In clean and ballisti…
Hard superconducting gap in PbTe nanowires
Yichun Gao, Wenyu Song, Shuai Yang +15
Semiconductor nanowires coupled to a superconductor provide a powerful testbed for quantum device physics such as Majorana zero modes and gate-tunable hybrid qubits. The performanc…
Conductance Quantization in PbTe Nanowires
Wenyu Song, Yuhao Wang, Wentao Miao +17
PbTe nanowires coupled to a superconductor have recently been proposed as a potential Majorana platform. The hallmark of the one-dimensional nature of ballistic nanowires is their…
Topology hierarchy of transition metal dichalcogenides built from quantum spin Hall layers
Lixuan Xu, Yiwei Li, Yuqiang Fang +15
The evolution of the physical properties of two-dimensional material from monolayer limit to the bulk reveals unique consequences from dimension confinement and provides a distinct…
Proximity effect in PbTe-Pb hybrid nanowire Josephson junctions
Zitong Zhang, Wenyu Song, Yichun Gao +20
Semiconductor-superconductor hybrid nanowires are a leading material platform for the realization of Majorana zero modes. The semiconductors in previous studies are dominantly InAs…
Intrinsic and tunable quantum anomalous Hall effect and magnetic topological phases in XYBi2Te5
Xin-Yi Tang, Zhe Li, Feng Xue +6
By first-principles calculations, we study the magnetic and topological properties of XYBi2Te5-family (X, Y = Mn, Ni, V, Eu) compounds. The strongly coupled double magnetic atom-la…
Evolution of the electronic structure of ultrathin MnBi2Te4 Films
Runzhe Xu, Yunhe Bai, Jingsong Zhou +18
Ultrathin films of intrinsic magnetic topological insulator MnBi2Te4 exhibit fascinating quantum properties such as quantum anomalous Hall effect and axion insulator state. In this…