263 citations · 402 across the 21 of their papers we have counts for
21 papers
Point-gap topology in amorphous non-Hermitian quantum systems
Xue-Min Yang, Mu Zhou, Deng-Feng Li +7
Recent studies have revealed that not only does the correspondence between spectral winding numbers and skin modes break down in non-Hermitian systems, but the energy spectrum itse…
Grassmann tensor networks
Jian-Gang Kong, Jia-Ji Zhu, Z. Y. Xie
Developing non-perturbative methods to reveal exotic properties of strongly correlated fermionic systems remains one of the most essential tasks of theoretical physics. Tensor netw…
Non-Hermitian second-order topological insulator with point gap
Xue-Min Yang, Hao Lin, Jian Li +3
The zero-mode corner states in the gap of two-dimensional non-Hermitian Su-Schrieffer-Heeger model are robust to infinitesimal perturbations that preserve chiral symmetry. However,…
Floquet composite Dirac semimetals
Hong Wu, Jia-Ji Zhu, Jian Li +3
Dirac semimetals can be classified into types I, II, and III based on the topological charge of their Dirac points. If a three-dimensional (3D) system can be sliced into a family o…
Spin-polarized scanning tunneling microscopy measurement scheme for determining the quantum geometric tensor
Shu-Hui Zhang, Jin Yang, Ding-Fu Shao +4
The quantum geometric tensor (QGT) embodies the geometry of the eigenstates of a system's Hamiltonian, and its full characterization across diverse quantum systems is essential. Ho…
RKKY interaction in helical higher-order topological insulators
Sha Jin, Jian Li, Qing-Xu Li +1
We theoretically investigate the RKKY interaction in helical higher-order topological insulators (HOTIs), revealing distinct behaviors mediated by hinge and Dirac-type bulk carrier…
Emergence of Surface Superconductivity through Interference in Superconducting-proximity Topological Insulators
Yajiang Chen, Ke-Ji Chen, Jia-Ji Zhu +1
Superconducting-proximity topological insulators (STIs) have garnered significant research attention over the past two decades. In this Letter, we demonstrate that a low-dimensiona…
Tunable non-Hermitian skin effect via gain and loss
Wen-Cheng Jiang, Hong Wu, Jian Li +2
We investigate theoretically tunable non-Hermitian skin effect in systems with gain and loss, and find that bipolar (quadripolar) non-Hermitian skin effect characterized by topolog…
Geometric density of states of electronic structures for local responses: Phase information from the amplitudes of STM measurement
Shu-Hui Zhang, Jin Yang, Ding-Fu Shao +3
Electronic band structures underlie the physical properties of crystalline materials, their geometrical exploration renovates the conventional cognition and brings about novel appl…
The electronic structure of intrinsic magnetic topological insulator MnBi2Te4 quantum wires
Jian Li, Zhu-Cai Yin, Qing-Xv Li +1
The ferromagnetic and antiferromagnetic nanostructure are crucial for fundamental spintronics devices, motivated by its potential application in spintronics, we theoretically inves…
Self-supervised Representations and Node Embedding Graph Neural Networks for Accurate and Multi-scale Analysis of Materials
Jian-Gang Kong, Ke-Lin Zhao, Jian Li +5
Supervised machine learning algorithms, such as graph neural networks (GNN), have successfully predicted material properties. However, the superior performance of GNN usually relie…
Self-supervised graph neural networks for accurate prediction of Néel temperature
Jian-Gang Kong, Qing-Xu Li, Jian Li +2
Antiferromagnetic materials are exciting quantum materials with rich physics and great potential for applications. It is highly demanded of the accurate and efficient theoretical m…
Oblique and asymmetric Klein tunneling across smooth NP junctions or NPN junctions in 8-Pmmn borophene
Zhan Kong, Jian Li, Yi Zhang +2
The tunneling of electrons and holes in quantum structures plays a crucial role in studying the transport properties of materials and the related devices. 8-Pmmn borophene is a new…
Few-shot machine learning in the three-dimensional Ising model
Rui Zhang, Bin Wei, Dong Zhang +2
We investigate theoretically the phase transition in three dimensional cubic Ising model utilizing state-of-the-art machine learning algorithms. Supervised machine learning models…
Selective generation and amplification of RKKY interactions by P-N interface
Shu-Hui Zhang, Jia-Ji Zhu, Wen Yang +1
We propose a physical mechanism to generate and selectively amplify anisotropic Rudermann-Kittel-Kasuya-Yosida (RKKY) interactions between two local spins. The idea is to combine t…
Focusing RKKY interaction by graphene P-N junction
Shu-Hui Zhang, Jia-Ji Zhu, Wen Yang +1
The carrier-mediated RKKY interaction between local spins plays an important role for the application of magnetically doped graphene in spintronics and quantum computation. Previou…
Topological Dirac semimetal phases in InSb/-Sn semiconductor superlattices
Jian-Peng Sun, Jia-ji Zhu, Dong Zhang +1
We demonstrate theoretically the coexistence of Dirac semimetal and topological insulator phases in InSb/-Sn conventional semiconductor superlattices, based on advanced first-pr…
Hidden quantum mirage by negative refraction in semiconductor P-N junctions
Shu-Hui Zhang, Jia-Ji Zhu, Wen Yang +2
We predict a novel quantum interference based on the negative refraction across a semiconductor P-N junction: with a local pump on one side of the junction, the response of a local…
Electron-phonon bound states in graphene in a perpendicular magnetic field
J. Zhu, S. M. Badalyan, F. Peeters
The spectrum of electron-phonon complexes in a monolayer graphene is investigated in the presence of a perpendicular quantizing magnetic field. Despite the small electron-phonon co…
Electrically controllable surface magnetism on the surface of topological insulator
Jia-Ji Zhu, Dao-Xin Yao, Shou-Cheng Zhang +1
We study theoretically the RKKY interaction between magnetic impurities on the surface of three-dimensional topological insulators, mediated by the helical Dirac electrons. Exact a…
Electrically-controllable RKKY interaction in semiconductor quantum wires
Jia-Ji Zhu, Kai Chang, Ren-Bao Liu +1
We demonstrate in theory that it is possible to all-electrically manipulate the RKKY interaction in a quasi-one-dimensional electron gas embedded in a semiconductor heterostructure…