Antisymmetric Seebeck Effect in a Tilted Weyl Semimetal
Bingyan Jiang, Jiaji Zhao, Jiangyuan Qian, Shen Zhang, Xiao‐Bin Qiang, Lujunyu Wang, Ran Bi, Juewen Fan, Hai‐Zhou Lu, Enke Liu, Xiaosong Wu
Abstract
Tilting the Weyl cone breaks the Lorentz invariance and enriches the Weyl physics. Here, we report the observation of a magnetic-field-antisymmetric Seebeck effect in a tilted Weyl semimetal, Co_{3}Sn_{2}S_{2}. Moreover, it is found that the Seebeck effect and the Nernst effect are antisymmetric in both the in-plane magnetic field and the magnetization. We attribute these exotic effects to the one-dimensional chiral anomaly and phase space correction due to the Berry curvature. The observation is further reproduced by a theoretical calculation, taking into account the orbital magnetization.
Topics & Concepts
Weyl semimetalNernst effectBerry connection and curvaturePhysicsAntisymmetric relationCondensed matter physicsMagnetizationThermoelectric effectLorentz transformationChiral anomalyDirac (video compression format)Magnetic fieldQuantum mechanicsSemimetalNernst equationGeometric phaseMathematical physicsBand gapFermionNeutrinoElectrodeTopological Materials and PhenomenaGraphene research and applicationsAlgebraic structures and combinatorial models