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Title: Multiple superconducting states induced by pressure in Mo 3 Sb 7

Abstract

Tuning competing ordering mechanisms with hydrostatic pressure in the 4d intermetallic compound Mo3Sb7 reveals an intricate interplay of structure, magnetism, and superconductivity. Synchrotron x-ray diffraction and magnetic susceptibility measurements, both employing diamond anvil cell technologies, link a first-order structural phase transition to a doubling of the superconducting transition temperature. In contrast to the spin-dimer picture for Mo3Sb7, we deduce from x-ray absorption near-edge structure and dc magnetization measurements at ambient pressure that Mo3Sb7 should possess only very small, itinerant magnetic moments. As a result, the pressure evolution of the superconducting transition temperature strongly suggests its enhancement is due to a difference in the phonon density-of-states with changed crystal symmetry.

Authors:
 [1];  [2];  [3];  [4];  [2]; ORCiD logo [5];  [2]
  1. Okinawa Institute of Science and Technology Graduate University, Okinawa (Japan); California Inst. of Technology (CalTech), Pasadena, CA (United States)
  2. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  3. The Univ. of Chicago, Chicago, IL (United States)
  4. Univ. of Tennessee, Knoxville, TN (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1485319
Alternate Identifier(s):
OSTI ID: 1345438
Grant/Contract Number:  
AC05-00OR22725; SC0014866; AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 95; Journal Issue: 12; 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

Citation Formats

Feng, Yejun, Wang, Yishu, Palmer, A., Li, Ling, Silevitch, D. M., Calder, Stuart A., and Rosenbaum, T. F. Multiple superconducting states induced by pressure in Mo3Sb7. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.95.125102.
Feng, Yejun, Wang, Yishu, Palmer, A., Li, Ling, Silevitch, D. M., Calder, Stuart A., & Rosenbaum, T. F. Multiple superconducting states induced by pressure in Mo3Sb7. United States. https://doi.org/10.1103/PhysRevB.95.125102
Feng, Yejun, Wang, Yishu, Palmer, A., Li, Ling, Silevitch, D. M., Calder, Stuart A., and Rosenbaum, T. F. Wed . "Multiple superconducting states induced by pressure in Mo3Sb7". United States. https://doi.org/10.1103/PhysRevB.95.125102. https://www.osti.gov/servlets/purl/1485319.
@article{osti_1485319,
title = {Multiple superconducting states induced by pressure in Mo3Sb7},
author = {Feng, Yejun and Wang, Yishu and Palmer, A. and Li, Ling and Silevitch, D. M. and Calder, Stuart A. and Rosenbaum, T. F.},
abstractNote = {Tuning competing ordering mechanisms with hydrostatic pressure in the 4d intermetallic compound Mo3Sb7 reveals an intricate interplay of structure, magnetism, and superconductivity. Synchrotron x-ray diffraction and magnetic susceptibility measurements, both employing diamond anvil cell technologies, link a first-order structural phase transition to a doubling of the superconducting transition temperature. In contrast to the spin-dimer picture for Mo3Sb7, we deduce from x-ray absorption near-edge structure and dc magnetization measurements at ambient pressure that Mo3Sb7 should possess only very small, itinerant magnetic moments. As a result, the pressure evolution of the superconducting transition temperature strongly suggests its enhancement is due to a difference in the phonon density-of-states with changed crystal symmetry.},
doi = {10.1103/PhysRevB.95.125102},
journal = {Physical Review B},
number = 12,
volume = 95,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2017},
month = {Wed Mar 01 00:00:00 EST 2017}
}

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Cited by: 1 work
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