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Laser-Controlled Nonlinear Hall Effect in Tellurium Solids via Nonlinear Phononics
Hongyu Chen, Xi Wu, Jiali Yang +2
A Terahertz (THz) laser with strong strength could excite more than one phonons and induce a transient lattice distortion termed as nonlinear phononics. This process allows dynamic…
Light-induced ideal Weyl semimetal in HgTe via nonlinear phononics
Dongbin Shin, Angel Rubio, Peizhe Tang
Interactions between light and matter allow the realization of out-of-equilibrium states in quantum solids. In particular, nonlinear phononics is one of the efficient approaches to…
Pseudospin-selective Floquet band engineering in black phosphorus
Shaohua Zhou, Changhua Bao, Benshu Fan +10
Time-periodic light field has emerged as a control knob for manipulating quantum states in solid-state materials, cold atoms and photonic systems via hybridization with photon-dres…
Continuous Electrical Manipulation of Magnetic Anisotropy and Spin Flopping in van der Waals Ferromagnetic Devices
Ming Tang, Junwei Huang, Feng Qin +19
Controlling the magnetic anisotropy of ferromagnetic materials plays a key role in magnetic switching devices and spintronic applications. Examples of spin-orbit torque devices wit…
Berry Curvature Engineering by Gating Two-Dimensional Antiferromagnets
Shiqiao Du, Peizhe Tang, Jiaheng Li +4
Recent advances in tuning electronic, magnetic, and topological properties of two-dimensional (2D) magnets have opened a new frontier in the study of quantum physics and promised e…
Visualizing topological edge states of single and double bilayer Bi supported on multibilayer Bi(111) films
Lang Peng, Jing-Jing Xian, Peizhe Tang +4
Freestanding single-bilayer Bi(111) is a two-dimensional topological insulator with edge states propagating along its perimeter. Given the interlayer coupling experimentally, the t…
Magnetic order induces symmetry breaking in the single crystalline orthorhombic CuMnAs semimetal
Eve Emmanouilidou, Huibo Cao, Peizhe Tang +7
Recently, orthorhombic CuMnAs has been proposed to be a magnetic material where topological fermions exist around the Fermi level. Here we report the magnetic structure of the orth…
Multiple types of topological fermions in transition metal silicides
Peizhe Tang, Quan Zhou, Shou-Cheng Zhang
Exotic massless fermionic excitations with non-zero Berry flux, other than Dirac and Weyl fermions, could exist in condensed matter systems under the protection of crystalline symm…
Dirac Fermions in Antiferromagnetic Semimetal
Peizhe Tang, Quan Zhou, Gang Xu +1
The analogues of elementary particles have been extensively searched for in condensed matter systems because of both scientific interests and technological applications. Recently m…
Dirac semimetal phase in the hexagonal LiZnBi
Wendong Cao, Peizhe Tang, Yong Xu +3
Based on first-principles calculations, we find that LiZnBi, a metallic hexagonal compound, can be driven into a Dirac semimetal with a pair of Dirac points by strain. The no…
Stable Dirac semi-metal in the allotrope of IV elements
Wendong Cao, Peizhe Tang, Shou-Cheng Zhang +2
Three dimensional topological Dirac semi-metals represent a novel state of quantum matter with exotic electronic properties, in which a pair of Dirac points with the linear dispers…
Large-Gap Quantum Spin Hall States in Stanene Grown on Substrate
Yong Xu, Peizhe Tang, Shou-Cheng Zhang
Two-dimensional stanene is a promising candidate material for realizing room-temperature quantum spin Hall (QSH) effect. Monolayer stanene has recently been fabricated by molecular…
Chemical potential dependent gap-opening at the Dirac surface states of Bi2Se3 induced by aggregated substitutional Cr atoms
Cui-Zu Chang, Peizhe Tang, Yi-Lin Wang +11
With angle-resolved photoemission spectroscopy, gap-opening is resolved at up to room temperature in the Dirac surface states of molecular beam epitaxy grown Cr-doped Bi2Se3 topolo…
Weak topological insulators induced by the inter-layer coupling: A first-principles study of stacked Bi2TeI
Peizhe Tang, Binghai Yan, Wendong Cao +3
Based on first-principles calculations, we predict Bi2TeI, a stoichiometric compound synthesized, to be a weak topological insulator (TI) in layered subvalent bismuth telluroiodide…
Large-gap quantum spin Hall insulators in tin films
Yong Xu, Binghai Yan, Hai-Jun Zhang +5
The search of large-gap quantum spin Hall (QSH) insulators and effective approaches to tune QSH states is important for both fundamental and practical interests. Based on first-pri…
On the electronic structure of silicene on Ag substrate: strong hybridization effects
Seymur Cahangirov, Martha Audiffred, Peizhe Tang +4
The electronic structure of the recently synthesised (3x3) reconstructed silicene on (4x4) Ag(111) is investigated by first-principles calculations. New states emerge due to the st…