337 citations · 1k across the 17 of their papers we have counts for
16 papers
Enhancement of Josephson Supercurrent in a -Junction state by Chiral Antiferromagnetism
Jin-Xing Hou, Hai-Peng Sun, Björn Trauzettel +1
Magnetic order typically disrupts superconductivity, reducing the supercurrent. Here, we show that chiral antiferromagnetism, with non-relativistic spin-split bands and distinctive…
Scaling analysis of quantum geometry in second-order nonlinear transport
Zhen-Hao Gong, Z. Z. Du, Hai-Peng Sun +2
Quantum geometry encodes the structure of the Hilbert space of Bloch states and can be accessed through nonlinear transport. Yet, disorder-induced mechanisms generically contribute…
Tunable second harmornic in altermagnetic Josephson junctions
Hai-Peng Sun, Song-Bo Zhang, Chang-An Li +1
We study the influence of external electric and Zeeman fields on the Josephson effect in a planar superconductor/altermagnet/superconductor junction. Remarkably, we find that the c…
Nonlinear Hall effect on a disordered lattice
Rui Chen, Z. Z. Du, Hai-Peng Sun +2
The nonlinear Hall effect has recently attracted significant interest due to its potential as a promising spectral tool and device applications. A theory of the nonlinear Hall effe…
Anomalous Andreev Spectrum and Transport in Non-Hermitian Josephson Junctions
Chang-An Li, Hai-Peng Sun, Björn Trauzettel
We propose a phase-biased non-Hermitian Josephson junction (NHJJ) composed of two superconductors mediated by a short non-Hermitian link. Such a NHJJ is described by an effective n…
Conductance oscillations of antiferromagnetic layer tunnel junctions
Sang-Jun Choi, Hai-Peng Sun, Björn Trauzettel
We study the conductance oscillation of an antiferromagnetic layer tunnel junction composed of antiferromagnetic topological insulators (MTIs) such as MnBiTe. In presen…
Chiral edge state coupling theory of transport in quantum anomalous Hall insulators
Rui Chen, Hai-Peng Sun, Bin Zhou +1
Theoretically, the quantum anomalous Hall effect is characterized by a quantized Hall conductance. However, many experiments only reported the quantization of the Hall resistance,…
Magnetic topological transistor exploiting layer-selective transport
Hai-Peng Sun, Chang-An Li, Sang-Jun Choi +3
We propose a magnetic topological transistor based on MnBiTe, in which the "on" state (quantized conductance) and the "off" state (zero conductance) can be easily switc…
Layer Hall effect induced by hidden Berry curvature in antiferromagnetic insulators
Rui Chen, Hai-Peng Sun, Mingqiang Gu +4
The layer Hall effect describes electrons spontaneously deflected to opposite sides at different layers, which has been experimentally reported in the MnBiTe thinfilms unde…
Layer Hall effect in a 2D topological Axion antiferromagnet
Anyuan Gao, Yu-Fei Liu, Chaowei Hu +33
While ferromagnets have been known and exploited for millennia, antiferromagnets (AFMs) were only discovered in the 1930s. The elusive nature indicates AFMs' unique properties: At…
Analytical solution for the surface states of antiferromagnetic topological insulator MnBiTe
Hai-Peng Sun, C. M. Wang, Song-Bo Zhang +7
Recently, the intrinsic magnetic topological insulator MnBiTe has attracted great attention. It has an out-of-plane antiferromagnetic order, which is believed to open a siz…
Using nonlocal surface transport to identify the axion insulator
Rui Chen, Shuai Li, Hai-Peng Sun +4
The axion is a hypothetical but experimentally undetected particle. Recently, the antiferromagnetic topological insulator MnBiTe has been predicted to host the axion insula…
Quantum theory of the nonlinear Hall effect
Z. Z. Du, C. M. Wang, Hai-Peng Sun +2
The nonlinear Hall effect is an unconventional response, in which a voltage can be driven by two perpendicular currents in the Hall-bar measurement. Unprecedented in the family of…
Angular dependence of the upper critical field in the high-pressure phase of MoTe
Y. J. Hu, Yuk Tai Chan, Kwing To Lai +7
Superconductivity in the type-II Weyl semimetal candidate MoTe has attracted much attention due to the possible realization of topological superconductivity. Under applied pres…
Quantum Transport in Topological Semimetals under Magnetic Fields (II)
Hai-Peng Sun, Hai-Zhou Lu
We review our recent works on the quantum transport, mainly in topological semimetals and also in topological insulators, organized according to the strength of the magnetic field.…
3D quantum Hall effect of Fermi arcs in topological semimetals
C. M. Wang, Hai-Peng Sun, Hai-Zhou Lu +1
The quantum Hall effect is usually observed in 2D systems. We show that the Fermi arcs can give rise to a distinctive 3D quantum Hall effect in topological semimetals. Because of t…