6 papers
Symmetry-protected coexistence of a nodal surface and multiple types of Weyl fermions in -
Xiao-Jing Gao, Yanfeng Ge, Yan Gao
The coexistence of topological states with different dimensionalities in a single crystalline system offers a unique platform to study the interplay of distinct fermionic excitatio…
Nonlinear Magnetic Orbital Hall Effect Induced by Spin-Orbit Coupling
Hui Wang, Huiying Liu, Yanfeng Ge +6
Electrical readout of 180 switching in strictly compensated collinear antiferromagnets remains a major challenge in antiferromagnetic spintronics. Electrical writing of per…
Single-pair charge-2 Weyl-Dirac composite semimetals
Hui-Jing Zheng, Ke-Xin Pang, Yun-Yun Bai +2
The Nielsen--Ninomiya theorem requires that the total topological chiral charges in a crystal vanish, a constraint typically satisfied by identical nodes like Weyl--Weyl pairs. Whe…
Single Pair of Charge-two Weyl Fermions in Chiral Boron Allotropes
Hui-Jing Zheng, Yan Gao, Yanfeng Ge +2
The realization of a minimal Weyl semimetal (WSM) hosting a single pair of Weyl points (WPs) has thus far been restricted to magnetic systems, since time-reversal symmetry generall…
Symmetry-Protected Minimum of Four Conventional Weyl Points in Nonmagnetic Crystals
Ze-Xin Xue, Ke-Xin Pang, Yun-Yun Bai +3
Realizing nonmagnetic Weyl semimetals (WSMs) with the minimal number of conventional Weyl points (WPs) and a clean Fermi surface remains a central challenge. Here, combining symmet…
Ideal Nodal-Sphere Semimetal in the Three-Dimensional Boron Allotrope CT-B
Xiao-jing Gao, Yanfeng Ge, Yan Gao
Nodal-sphere semimetals (NSSMs), featuring spherical band degeneracies in momentum space, constitute a fascinating class of topological materials. However, their realization in rea…