247 citations · 521 across the 14 of their papers we have counts for
14 papers
Coexistence of topologically nontrivial and trivial insulating states in topological Anderson Chern insulator
Bo Yin, Yan Zhang, Anqi Wang +3
The interplay between disorder and topology has become a central theme in condensed matter physics. Disorder can not only destroy topological phases but also induce them, as exempl…
Three-dimensional topological ferroelectrics
Haohao Sheng, Sheng Zhang, Zhong Fang +2
Three-dimensional (3D) topological ferroelectric (FE) insulators, in which topological and FE orders naturally coexist, enable field-controlled spintronic devices. In this work, we…
Polarization-induced Quantum Spin Hall Insulator and Topological Devices in InAs Quantum Wells
Chenhao Liang, Sheng Zhang, Haohao Sheng +4
In this work, we predict the emergence of a quantum spin Hall insulator (QSHI) in conventional semiconductors, specifically InAs quantum wells, driven by a built-in polarization fi…
Evidence for Two-dimensional Weyl Fermions in Air-Stable Monolayer PtTe
Zhihao Cai, Haijun Cao, Haohao Sheng +14
The Weyl semimetals represent a distinct category of topological materials wherein the low-energy excitations appear as the long-sought Weyl fermions. Exotic transport and optical…
A numerical method for designing topological superconductivity induced by s-wave pairing
Jingnan Hu, Aiyun Luo, Zhijun Wang +3
Topological superconductors have garnered significant attention due to their potential for realizing topological quantum computation. However, a universal computational tool based…
Majorana corner modes in unconventional monolayers of the 1T-PtSe2 family
Haohao Sheng, Yue Xie, Quansheng Wu +5
In this work, we propose that Majorana zero modes can be realized at the corners of the two-dimensional unconventional insulator. We demonstrate that 1T-PtSe2 is a symmetry indicat…
Vanadium-Based Superconductivity in a Breathing Kagome Compound Ta2V3.1Si0.9
HongXiong Liu, JingYu Yao, JianMin Shi +8
Superconductivity in V-based kagome metals has recently raised great interest as they exhibit the competing ground states associated with the flat bands and topological electronic…
Interfering Josephson diode effect in Ta2Pd3Te5 asymmetric edge interferometer
Yupeng Li, Dayu Yan, Yu Hong +17
Edge states in topological systems have attracted great interest due to their robustness and linear dispersions. Here a superconducting-proximitized edge interferometer is engineer…
Superconductivity in unconventional metals
Zhilong Yang, Haohao Sheng, Zhaopeng Guo +5
Based on first-principles calculations, we demonstrate that 1H/2H-phase transition metal dichalcogenides MX2 (M=Nb,Ta; X=S,Se,Te) are unconventional metals, which have an empty-sit…
Unconventional phonon spectra and obstructed edge phonon modes
Ruihan Zhang, Haohao Sheng, Junze Deng +3
Based on the elementary band representations (EBR), some topologically trivial materials are classified as unconventional ones (obstructed atomic limit), where the EBR decompositio…
Ferroelectric metals in 1T/1T'-phase transition metal dichalcogenide MTe2 bilayers (M = Pt, Pd, and Ni)
Haohao Sheng, Zhong Fang, Zhijun Wang
Ferroelectricity and metallicity cannot coexist due to the screening effect of conducting electrons, and a large number of stable monolayers with 1T/1T phase lack sponta…
Multiple mobile excitons manifested as sidebands in quasi-one-dimensional metallic TaSe3
Junzhang Ma, Simin Nie, Xin Gui +22
Charge neutrality and their expected itinerant nature makes excitons potential transmitters of information. However, exciton mobility remains inaccessible to traditional optical ex…
Evidence for an axionic charge density wave in the Weyl semimetal (TaSe4)2I
Johannes Gooth, Barry Bradlyn, Shashank Honnali +9
An axion insulator is a correlated topological phase, predicted to arise from the formation of a charge density wave in a Weyl semimetal. The accompanying sliding mode in the charg…
Landau level splitting in Cd3As2 under high magnetic fields
Junzhi Cao, Sihang Liang, Cheng Zhang +13
Three-dimensional topological Dirac semimetals (TDSs) are a new kind of Dirac materials that exhibit linear energy dispersion in the bulk and can be viewed as three-dimensional gra…