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Giant enhancement of superconductivity in few layers MoTe2.
- Source :
- Chinese Physics B; Oct209, Vol. 28 Issue 11, p1-1, 1p
- Publication Year :
- 2019
-
Abstract
- Recently, the layered transition metal dichalcogenide 1T′ MoTe<subscript>2</subscript> has attracted considerable attention due to its non-saturating magnetoresistance, type-II Weyl semimetal properties, superconductivity, and potential candidate for two-dimensional (2D) topological insulator in the single- and few-layer limit. Here in this work, we perform systematic transport measurements on thin flakes of MoTe<subscript>2</subscript> prepared by mechanical exfoliation. We find that MoTe<subscript>2</subscript> flakes are superconducting and have an onset superconducting transition temperature T<subscript>c</subscript> up to 5.3 K, which significantly exceeds that of its bulk counterpart. The in-plane upper critical field (H<subscript>c2||</subscript>) is much higher than the Pauli paramagnetic limit, implying that the MoTe<subscript>2</subscript> flakes have Zeeman-protected Ising superconductivity. Furthermore, the T<subscript>c</subscript> and H<subscript>c2</subscript> can be tuned by up to 320 mK and 400 mT by applying a gate voltage. Our result indicates that MoTe<subscript>2</subscript> flake is a good candidate for studying exotic superconductivity with nontrivial topological properties. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16741056
- Volume :
- 28
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Chinese Physics B
- Publication Type :
- Academic Journal
- Accession number :
- 139702268
- Full Text :
- https://doi.org/10.1088/1674-1056/ab457f