41 citations · 184 across the 16 of their papers we have counts for
16 papers
Gate-Tunable Ambipolar Josephson Current in a Topological Insulator
Bomin Zhang, Xiaoda Liu, Junjie Qi +9
Dirac surface states in a topological insulator (TI) with proximity-induced superconductivity offer a promising platform for realizing topological superconductivity and Majorana ph…
Domain Wall Engineering in Graphene-Based Josephson Junctions
Xia'an Du, Junjie Qi, Hua Jiang +1
Recent progress has enabled the controlled fabrication of domain walls (DWs) in graphene, which host topological kink states. Meanwhile, reliable techniques for constructing graphe…
Non-Hermitian superconducting diode effect
Junjie Qi, Ming Lu, Jie Liu +2
The study of non-reciprocal phenomena has long captivated interest in both Hermitian and non-Hermitian systems. The superconducting diode effect (SDE) is a non-reciprocal phenomeno…
Edge supercurrent in Josephson junctions based on topological materials
Junjie Qi, Chui-Zhen Chen, Juntao Song +4
The interplay between novel topological states and superconductivity has garnered substantial interest due to its potential for topological quantum computing. The Josephson effect…
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…
Anomalous Fraunhofer-like patterns in quantum anomalous Hall Josephson junction
Junjie Qi, Haiwen Liu, Jie Liu +5
The intriguing interplay between topology and superconductivity has attracted significant attention, given its potential for realizing topological superconductivity. In the quantum…
Complex Landau levels and related transport properties in the strained zigzag graphene nanoribbons
Zhi-qiang Bao, Ju-wen Ding, Junjie Qi
The real magnetic fields (MFs) acting on the graphene can induce flat real Landau levels (LLs). As an analogy, strains in graphene can produce significant pseudo MFs, triggering th…
Reverse strain-induced snake states in graphene nanoribbons
Cheng-Yi Zuo, Junjie Qi, Tian-Lun Lu +2
Strain can tailor the band structures and properties of graphene nanoribbons (GNRs) with the well-known emergent pseudo-magnetic fields and the corresponding pseudo-Landau levels (…
Evolution of Berry curvature and reentrant quantum anomalous Hall effect in an intrinsic magnetic topological insulator
Chui-Zhen Chen, Junjie Qi, Dong-Hui Xu +1
Recently, the magnetic topological insulator MnBiTe emerged as a competitive platform to realize quantum anomalous Hall (QAH) states. We report a Berry-curvature splitting…
The observation of in-plane quantum Griffiths singularity in two-dimensional crystalline superconductors
Yi Liu, Shichao Qi, Jingchao Fang +11
Quantum Griffiths singularity (QGS) reveals the profound influence of quenched disorder on the quantum phase transitions, characterized by the divergence of the dynamical critical…
The Discovery of Tunable Universality Class in Superconducting -W Thin Films
Ce Huang, Enze Zhang, Yong Zhang +16
The interplay between quenched disorder and critical behavior in quantum phase transitions is conceptually fascinating and of fundamental importance for understanding phase transit…
Non-Abelian statistics of Majorana zero modes in the presence of an Andreev bound state
Wenqin Chen, Jiachen Wang, Yijia Wu +2
Braiding Majorana zero modes (MZMs) is the key procedure toward topological quantum computation. We show such braiding can be well performed in a parallel semiconductor-superconduc…
Quantum to classical crossover under dephasing effects in a two-dimensional percolation model
Junjie Qi, Haiwen Liu, Chui-zhen Chen +2
Scaling theory predicts complete localization in in quantum systems belonging to orthogonal class (i.e. with time-reversal symmetry and spin-rotation symmetry). The conductan…
Effective spin dephasing mechanism in confined two-dimensional topological insulators
Junjie Qi, Haiwen Liu, Hua Jiang +1
A Kramers pair of helical edge states in quantum spin Hall effect (QSHE) is robust against normal dephasing but not robust to spin dephasing. In our work, we provide an effective s…
Surface plasmon polaritons in topological insulator
Junjie Qi, Haiwen Liu, X. C. Xie
We study surface plasmon polaritons on topological insulator-vacuum interface. When the time-reversal symmetry is broken due to ferromagnetic coupling, the surface states exhibit m…
Phase Structure of the Topological Anderson Insulator
Dongwei Xu, Junjie Qi, Jie Liu +3
We study the disordered topological Anderson insulator in a 2-D (square not strip) geometry. We first report the phase diagram of finite systems and then study the evolution of pha…