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Title: Magnetic Field Enhanced Superconductivity in Epitaxial Thin Film WTe2

Journal Article · · Scientific Reports

In conventional superconductors an external magnetic field generally suppresses superconductivity. This results from a simple thermodynamic competition of the superconducting and magnetic free energies. In this study, we report the unconventional features in the superconducting epitaxial thin film tungsten telluride (WTe2). Measuring the electrical transport properties of Molecular Beam Epitaxy (MBE) grown WTe2 thin films with a high precision rotation stage, we map the upper critical field Hc2 at different temperatures T. We observe the superconducting transition temperature T c is enhanced by in-plane magnetic fields. The upper critical field Hc2 is observed to establish an unconventional non-monotonic dependence on temperature. We suggest that this unconventional feature is due to the lifting of inversion symmetry, which leads to the enhancement of Hc2 in Ising superconductors.

Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0008110
OSTI ID:
1500044
Journal Information:
Scientific Reports, Vol. 8, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

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Cited By (8)

Wafer-scale production of patterned transition metal ditelluride layers for two-dimensional metal–semiconductor contacts at the Schottky–Mott limit journal April 2020
Low temperature epitaxy of tungsten–telluride heterostructure films journal January 2019
Experimental progress on layered topological semimetals journal April 2019
Yanson point-contact spectroscopy of Weyl semimetal WTe 2 journal July 2019
A Review of the Characteristics, Synthesis, and Thermodynamics of Type-II Weyl Semimetal WTe2 journal July 2018
Experimental Progress on Layered Topological Semimetals text January 2019
Yanson point-contact spectroscopy of Weyl semimetal WTe2 text January 2019
A Review of the Characteristics, Synthesis, and Thermodynamics of Type-II Weyl Semimetal WTe2 journal July 2018

Figures / Tables (3)