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A remarkable feature of Weyl semimetals (WSMs) is Fermi arcs - anomalous surface states that connect Weyl nodes of opposite chirality. At the interface betweem two WSMs, they can instead connect Weyl nodes of the same chirality, leading to perfect transmission of electrons across the interface. In this talk, I will describe some recent work on the magnetic breakdown of electron transport in this setup. For an interface between WSMs twisted relative to one another, we show that a longitudinal magnetic field leads to a suppression of conductance owing to Landau-Zener tunneling between the interface modes of opposite chirality.

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Vastal Dwivedi, FU Berlin
Seminar Room 0.03, ETP
Contact: Simon Trebst