Generation of strain-induced pseudo-magnetic field in a doped type-II Weyl semimetal
| Autor: | M. Mandal, Anshu Sirohi, Suman Kamboj, Goutam Sheet, Ravi Pratap Singh, Tanmoy Das, Aastha Vasdev, Sourav Marik, Partha Rana |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
Field (physics) Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Scanning tunneling spectroscopy FOS: Physical sciences Weyl semimetal 02 engineering and technology Landau quantization 021001 nanoscience & nanotechnology 01 natural sciences Atomic units Semimetal law.invention Magnetic field Condensed Matter::Materials Science law Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Scanning tunneling microscope 010306 general physics 0210 nano-technology |
| Popis: | 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. 6 pages, 4 figures |
| Databáze: | OpenAIRE |
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