Concurrence of anomalous Hall effect and charge density wave in a superconducting topological kagome metal
Fanghang Yu, Tao Wu, Zhenyu Wang, Bin Lei, Weizhuang Zhuo, Jianjun Ying, Xianhui Chen
Abstract
As one of the most fundamental physical phenomena, the anomalous Hall effect (AHE) typically occurs in ferromagnetic materials but is not expected in conventional superconductors. Here, the authors find a giant AHE in the kagome superconductor CsV${}_{3}$Sb${}_{5}$. Strikingly, the AHE develops spontaneously with the occurrence of a charge density wave (CDW), indicating a strong correlation between the CDW state and AHE. These discoveries make CsV${}_{3}$Sb${}_{5}$ an ideal platform to study the interplay among nontrivial band topology, CDW, and unconventional superconductivity
Topics & Concepts
Condensed matter physicsHall effectSuperconductivityCharge density wavePhysicsFerromagnetismScatteringLattice (music)Topology (electrical circuits)Electrical resistivity and conductivityQuantum mechanicsAcousticsMathematicsCombinatoricsAdvanced Condensed Matter PhysicsTopological Materials and PhenomenaPhysics of Superconductivity and Magnetism