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Antisymmetric Seebeck effect in a tilted Weyl semimetal

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arxiv 2208.00434 v1 pith:U2O3MSUQ submitted 2022-07-31 cond-mat.mes-hall cond-mat.other

Bingyan Jiang , Jiaji Zhao , Jiangyuan Qian , Shen Zhang , XiaoBin Qiang , Lujunyu Wang , Ran Bi , Juewen Fan
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Hai-Zhou Lu Enke Liu Xiaosong Wu
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classification cond-mat.mes-hallcond-mat.other
keywords effectweylseebeckantisymmetricmagnetizationobservationsemimetaltilted
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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.

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