Title: Rh₂Mo₃N: Noncentrosymmetric $$\mathcal{s}$$-wave superconductor

Abstract

Rh₂Mo₃N, with a noncentrosymmetric $$\beta$$-manganese structure, has been found to be superconducting with critical temperature $$T_c$$ ≈ 4.3K. Magnetic field dependence of resistivity, magnetization, and specific heat measurements show that its upper critical field of $$μ_0H^\ast_{c2}$$ ~ 7.41 T comes close to, but does not exceed, the Pauli paramagnetic limit and that the 2Δ/$$k_\text{B}T_c$$ value of about 3.62 is in accordance with a conventional $$\mathcal{s}$$-wave superconductor. Andreev reflection spectroscopy measurements using both normal metal and half-metal demonstrate conclusively $$\mathcal{s}$$-wave pairing with an isotropic gap.

Authors:

Wei, Wensen ^[1]; Zhao, G. J. ^[2]; Kim, D. R. ^[2]; Jin, Chiming ^[1]; Zhang, J. L. ^[3]; Ling, Langsheng ^[3]; Zhang, Lei ^[3]; Du, Haifeng ^[1]; Chen, T. Y. ^[2]; Zang, Jiadong ^[4]; Tian, Mingliang ^[1]; Chien, C. L. ^[5]; Zhang, Yuheng ^[1]

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+ Show Author Affiliations

1. Chinese Academy of Sciences (CAS), Hefei (China); University of Science and Technology of China, Hefei (China); Nanjing Univ. (China)
2. Arizona State Univ., Tempe, AZ (United States)
3. Chinese Academy of Sciences (CAS), Hefei (China); University of Science and Technology of China, Hefei (China)
4. Univ. of New Hampshire, Durham, NH (United States)
5. Johns Hopkins Univ., Baltimore, MD (United States)

Publication Date:

Wed Sep 07 00:00:00 EDT 2016

Research Org.:

Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES)

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); Youth Innovation Promotion Association; Chinese Academy of Sciences/State Administration of Foreign Experts Affairs (CAS/SAFEA)

OSTI Identifier:

1388927

Alternate Identifier(s):

OSTI ID: 1321043

Grant/Contract Number:  

SC0012670; 11474290; 11374302; U1432251; U1332209; 11504378

Resource Type:

Journal Article: Accepted Manuscript

Journal Name:

Physical Review B

Additional Journal Information:

Journal Volume: 94; Journal Issue: 10; Related Information: SHINES partners with University of California, Riverside (lead); Arizona State University; Colorado State University; Johns Hopkins University; University of California Irvine; University of California Los Angeles; University of Texas at Austin; Journal ID: ISSN 2469-9950

Publisher:

American Physical Society (APS)

Country of Publication:

United States

Language:

English

Subject:

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; phonons; thermal conductivity; thermoelectric; spin dynamics; spintronics