424 citations · 1.3k across the 26 of their papers we have counts for
26 papers
Berry-Curvature Engineering for Nonreciprocal Directional Dichroism in Two-Dimensional Antiferromagnets
Wenhao Liang, Junjie Zeng, Zhenhua Qiao +2
In two-dimensional antiferromagnets, we identify the mixed Berry curvature as the geometrical origin of the nonreciprocal directional dichroism (NDD), which refers to the differenc…
Electric Field Influenced Coordinate Jump of the Guiding Center and Magnetotransport
Jingjing Feng, Yang Gao, Qian Niu
We derived an electrical current formula in the presence of a strong out of plane magnetic field and an in plane electric field, and within two dimensional disordered systems. This…
Giant second-order nonlinearity in twisted bilayer graphene
Junxi Duan, Yu Jian, Yang Gao +4
In the second-order response regime, the Hall voltage can be nonzero without breaking the time-reversal symmetry, as long as the system is noncentrosymmetric. There are multiple me…
Berry Phase origin of the planar spin Hall effect
Haolin Pan, Dazhi Hou, Yang Gao
The Berry phase origin is elaborated for the recent-discovered planar spin Hall effect which features current-induced spin polarization within the plane of the Hall deflection. We…
Chiral anomaly in Weyl semimetals from spin current injection
Yang Gao
Weyl semimetals are well-known for hosting topologically protected linear band crossings, serving as the analog of the relativistic Weyl Fermions in the condensed matter context. S…
Elastic Wave Propagation and Bandgaps in Finitely Stretched Soft Lattice Material
Shiheng Zhao, Tao Feng Han Zhang, Yang Gao +1
In this study, the in-plane Bloch wave propagation and bandgaps in a finitely stretched square lattice were investigated numerically and theoretically. To be specific, the elastic…
Intrinsic nonlinear Hall effect in antiferromagnetic tetragonal CuMnAs
Chong Wang, Yang Gao, Di Xiao
Detecting the orientation of the Néel vector is a major research topic in antiferromagnetic spintronics. Here we recognize the intrinsic nonlinear Hall effect, which is independent…
3D Topological Plasmons in Weyl Semimetals
Furu Zhang, Yang Gao, Wei Zhang
We systematically investigate the properties of bulk, surface and edge plasmons in Weyl semimetals in presence of a magnetic field. It is found that unidirectional plasmons with di…
Direct measurement of ferroelectric polarization in a tunable semimetal
Sergio C. de la Barrera, Qingrui Cao, Yang Gao +7
Ferroelectricity, the electrostatic counterpart to ferromagnetism, has long been thought to be incompatible with metallicity due to screening of electric dipoles and external elect…
Topological Inverse Faraday Effect in Weyl Semimetals
Yang Gao, Chong Wang, Di Xiao
We demonstrate that in Weyl semimetals, the momentum-space helical spin texture can couple to the chirality of the Weyl node to generate a frequency-independent magnetization in re…
Thermodynamics of Energy Magnetization
Yinhan Zhang, Yang Gao, Di Xiao
We construct the thermodynamics of energy magnetization in the presence of gravitomagnetic field. We show that the free energy must be modified to account for the modification of t…
Electric Polarization in Inhomogeneous Crystals
Yiqiang Zhao, Yang Gao, Di Xiao
We derive the charge density up to second order in spatial gradient in inhomogeneous crystals using the semiclassical coarse graining procedure based on the wave packet method. It…
Optical detection and manipulation of spontaneous gyrotropic electronic order in a transition-metal dichalcogenide semimetal
Su-Yang Xu, Qiong Ma, Yang Gao +16
The observation of chirality is ubiquitous in nature. Contrary to intuition, the population of opposite chiralities is surprisingly asymmetric at fundamental levels. Examples range…
Topological charge pumping in twisted bilayer graphene
Yinhan Zhang, Yang Gao, Di Xiao
We show that a sliding motion between the two layers of a \moire superlattice induces an electric current and realizes a two-dimensional version of the topological Thouless pump wh…
Semiclassical Dynamics and Nonlinear Charge Current
Yang Gao
Electron conductivity is an important material property that can provide a wealth of information about the underlying system. Especially, the response of the conductivity with resp…
Nonreciprocal Directional Dichroism Induced by the Quantum Metric Dipole
Yang Gao, Di Xiao
We identify the quantum metric dipole as the geometric origin of the nonreciprocal directional dichroism which describes the change in the refractive index upon reversing the light…
Theory of Orbital Magnetic Quadrupole Moment and Nonlinear Anomalous Thermoelectric Transport
Yang Gao, Di Xiao
We present a microscopic theory of the magnetic quadrupole moment density in periodic crystals with combined time reversal () and inversion ($\mathc…
Magnetic field influenced electron-impurity scattering and magnetotransport
Jingjing Feng, Cong Xiao, Yang Gao +1
We formulate a quasiclassical theory ( with as the cyclotron frequency and as the relaxation time) to study the influence of magnetic field on electron-im…
Microscopic Theory of Spin Toroidization in Periodic Crystals
Yang Gao, David Vanderbilt, Di Xiao
Using the semiclassical theory of electron dynamics, we derive a gauge-invariant expression for the spin toroidization in a periodical crystal. We show that the spin toroidization…
Intrinsic Magnetoconductivity of Non-magnetic Metals
Yang Gao, Shengyuan A. Yang, Qian Niu
We present a comprehensive study of magnetoconductivity for general three-dimensional non-magnetic metals within the Berry-curvature-corrected semiclassical and Boltzmann framework…
Linear magnetoresistance induced by intra-scattering semiclassics of Bloch electrons
Cong Xiao, Hua Chen, Yang Gao +3
The weak field magnetoresistance has seen a revived interest due to the distinct role played by the momentum-space Berry curvature of Bloch electrons. While most previous studies i…
Magnetic Response Functions in Landau Levels
Yang Gao, Qian Niu
We propose a new quantization rule which generates Landau levels consistent with the zero-field magnetic response functions from the semiclassical theory. It reproduces the Onsager…
Geometrical effects in orbital magnetic susceptibility
Yang Gao, Shengyuan A. Yang, Qian Niu
Within the wave-packet semiclassical approach, the Bloch electron energy is derived to second order in the magnetic field and classified into gauge-invariant terms with clear physi…
Field Induced Positional Shift of Bloch Electrons and its Dynamical Implications
Yang Gao, Shengyuan A. Yang, Qian Niu
We derive the field correction to the Berry curvature of Bloch electrons, which can be traced back to a positional shift due to the interband mixing induced by external electromagn…