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arXiv · 1903.06224

Generation of strain-induced pseudo-magnetic field in a doped type-II Weyl semimetal

Suman Kamboj·Partha Sarathi Rana·Anshu Sirohi·Aastha Vasdev·Manasi Mandal·Sourav Marik·Ravi Prakash Singh·Tanmoy Das·Goutam Sheet
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Abstract

In Weyl semimetals, there is an intriguing possibility of realizing a pseudo-magnetic field in presence of small strain due to certain special cases of static deformations. This pseudo-magnetic field can be large enough to form quantized Landau levels and thus become observable in Weyl semimetals. In this paper, we experimentally show the emergence of a pseudo-magnetic field (~ 3 Tesla) by Scanning Tunneling Spectroscopy (STS) on the doped Weyl semimetal Re-MoTe2, where distinct Landau level oscillations in the tunneling conductance are clearly resolved. The crystal lattice is intrinsically strained where large area STM imaging of the surface reveals differently strained domains where atomic scale deformations exist forming topographic ripples with varying periodicity in the real space. The effect of pseudo-magnetic field is clearly resolved in areas under maximum strain.

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Suman Kamboj, Partha Sarathi Rana, Anshu Sirohi, Aastha Vasdev, Manasi Mandal, Sourav Marik, Ravi Prakash Singh, Tanmoy Das, Goutam Sheet. 2019-03-14. Generation of strain-induced pseudo-magnetic field in a doped type-II Weyl semimetal. https://doi.org/10.1103/physrevb.100.115105

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