TY - JOUR
T1 - Superconductivity in type-II Weyl-semimetal WTe2induced by a normal metal contact
AU - Kononov, Artem
AU - Endres, Martin
AU - Abulizi, Gulibusitan
AU - Qu, Kejian
AU - Yan, Jiaqiang
AU - Mandrus, David G.
AU - Watanabe, Kenji
AU - Taniguchi, Takashi
AU - Schönenberger, Christian
N1 - Publisher Copyright:
© 2021 Author(s).
PY - 2021/3/21
Y1 - 2021/3/21
N2 - WT e 2 is a material with rich topological properties: It is a 2D topological insulator as a monolayer and a Weyl-semimetal and higher-order topological insulator in a bulk form. Inducing superconductivity in topological materials is a way to obtain topological superconductivity, which lays at the foundation for many proposals of fault tolerant quantum computing. Here, we demonstrate the emergence of superconductivity at the interface between WT e 2 and the normal metal palladium. The superconductivity has a critical temperature of about 1.2 K. By studying the superconductivity in a perpendicular magnetic field, we obtain the coherence length and the London penetration depth. These parameters correspond to a low Fermi velocity and a high density of states at the Fermi level. This hints to a possible origin of superconductivity due to the formation of flatbands. Furthermore, the critical in-plane magnetic field exceeds the Pauli limit, suggesting a non-trivial nature of the superconducting state.
AB - WT e 2 is a material with rich topological properties: It is a 2D topological insulator as a monolayer and a Weyl-semimetal and higher-order topological insulator in a bulk form. Inducing superconductivity in topological materials is a way to obtain topological superconductivity, which lays at the foundation for many proposals of fault tolerant quantum computing. Here, we demonstrate the emergence of superconductivity at the interface between WT e 2 and the normal metal palladium. The superconductivity has a critical temperature of about 1.2 K. By studying the superconductivity in a perpendicular magnetic field, we obtain the coherence length and the London penetration depth. These parameters correspond to a low Fermi velocity and a high density of states at the Fermi level. This hints to a possible origin of superconductivity due to the formation of flatbands. Furthermore, the critical in-plane magnetic field exceeds the Pauli limit, suggesting a non-trivial nature of the superconducting state.
UR - http://www.scopus.com/inward/record.url?scp=85103267928&partnerID=8YFLogxK
U2 - 10.1063/5.0021350
DO - 10.1063/5.0021350
M3 - Article
AN - SCOPUS:85103267928
SN - 0021-8979
VL - 129
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 11
M1 - 113903
ER -