6 papers · 1 filter
Quadratic piezoelectricity from stacking-engineered interference in multilayer sliding ferroelectrics
Jiaxuan Fan, Yuexing Zhao, Xiao-Ping Li +3
Designing nonlinear piezoelectricity requires suppressing the linear piezoelectric coefficient without extinguishing higher-order electromechanical response, yet a general and reco…
Charge-Density-Wave Phase Selection by Janus-Induced Intrinsic Strain in Monolayer NbSSiAs
Chun-Jie Zhang, Bing Zhang, Dongliang Mao +3
Controlling phase selection among competing charge-density-wave (CDW) instabilities remains challenging in two-dimensional materials. Here, first-principles calculations show that…
Symmetry-Selective Strain Control of Spin-Momentum Locking and Spin Transport in Two-Dimensional Pentagonal Altermagnets
ShuaiYu Wang, Sheng Chen, Xiao-Ping Li +1
Altermagnets are compensated magnets featuring momentum-dependent nonrelativistic spin splitting generated by nontrivial operations connecting opposite-spin sublattices. A direct s…
Ferroelectrically Controlled Chirality Switching of Weyl Quasiparticles
Zeling Li, Yu liu, Le Du +6
Weyl quasiparticles, as gapless low-energy excitations with nontrivial chirality, have garnered extensive interest in recent years. However, archieving effective and reversible con…
Two-dimensional Dual-Switchable Ferroelectric Altermagnets: Altering Electrons and Magnons
ShuaiYu Wang, Wei-Wei Wang, Jiaxuan Fan +3
Ferroelectric altermagnets (FEAMs) offer unique magnetoelectric coupling properties by combining the characteristics of both antiferromagnets and ferromagnets, yet their multifunct…
Essentially degenerate hidden nodal lines in two-dimensional magnetic layer groups
Xiao-Ping Li, Chaoxi Cui, Lei Wang +4
According to the theory of group representations, the types of band degeneracy can be divided into accidental degeneracy and essential degeneracy. The essentially degenerate nodal…