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Title: Reversal of the Upper Critical Field Anisotropy and Spin-Locked Superconductivity in K 2Cr 3As 3

Abstract

Recently, superconductivity in K 2Cr 3As 3 (T c =6.1 K) was discovered. The crystalline lattice contains an array of weakly coupled, double well [(Cr 3As 3) 2-] linkages stretched along the c axis, suggesting the possibility of quasi-one-dimensional superconductivity. Moderately anisotropic upper critical field was revealed in single crystals, with very large initial slopes, dH c2 /dT=12 T/K along the Cr chains and dH perpendicular c2 /dT =7 T/K perpendicular to the chains. Given the ambiguity of conclusions based on the extrapolations of H c2(T) measured near T c to low temperatures, we performed high-field measurements of H c2(T) on K 2Cr 3As 3 single crystals in pulsed magnetic fields which enabled us to reveal the full anisotropic H c2(T) curves from T c down to 600 mK.

Authors:
 [1];  [2];  [1];  [1];  [1];  [3];  [2];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
  3. Old Dominion Univ., Norfolk, VA (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1237414
Report Number(s):
LA-UR-16-20714
TRN: US1600522
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CRITICAL FIELD; SUPERCONDUCTIVITY; MONOCRYSTALS; ANISOTROPY; TEMPERATURE RANGE 00-0013 K; EXTRAPOLATION; DIAGRAMS; PULSES; POTASSIUM COMPOUNDS; CHROMIUM ARSENIDES; High Magnetic Field Science

Citation Formats

Balakirev, Fedor Fedorovich, Kong, T., Jaime, Marcelo, McDonald, Ross David, Mielke, Charles H., Gurevich, A., Canfield, P. C., and Bud'ko, S. L.. Reversal of the Upper Critical Field Anisotropy and Spin-Locked Superconductivity in K2Cr3As3. United States: N. p., 2016. Web. doi:10.2172/1237414.
Balakirev, Fedor Fedorovich, Kong, T., Jaime, Marcelo, McDonald, Ross David, Mielke, Charles H., Gurevich, A., Canfield, P. C., & Bud'ko, S. L.. Reversal of the Upper Critical Field Anisotropy and Spin-Locked Superconductivity in K2Cr3As3. United States. doi:10.2172/1237414.
Balakirev, Fedor Fedorovich, Kong, T., Jaime, Marcelo, McDonald, Ross David, Mielke, Charles H., Gurevich, A., Canfield, P. C., and Bud'ko, S. L.. Mon . "Reversal of the Upper Critical Field Anisotropy and Spin-Locked Superconductivity in K2Cr3As3". United States. doi:10.2172/1237414. https://www.osti.gov/servlets/purl/1237414.
@article{osti_1237414,
title = {Reversal of the Upper Critical Field Anisotropy and Spin-Locked Superconductivity in K2Cr3As3},
author = {Balakirev, Fedor Fedorovich and Kong, T. and Jaime, Marcelo and McDonald, Ross David and Mielke, Charles H. and Gurevich, A. and Canfield, P. C. and Bud'ko, S. L.},
abstractNote = {Recently, superconductivity in K2Cr3As3 (Tc =6.1 K) was discovered. The crystalline lattice contains an array of weakly coupled, double well [(Cr3As3)2-]∞ linkages stretched along the c axis, suggesting the possibility of quasi-one-dimensional superconductivity. Moderately anisotropic upper critical field was revealed in single crystals, with very large initial slopes, dH∥c2 /dT=12 T/K along the Cr chains and dHperpendicularc2 /dT =7 T/K perpendicular to the chains. Given the ambiguity of conclusions based on the extrapolations of Hc2(T) measured near Tc to low temperatures, we performed high-field measurements of Hc2(T) on K2Cr3As3 single crystals in pulsed magnetic fields which enabled us to reveal the full anisotropic Hc2(T) curves from Tc down to 600 mK.},
doi = {10.2172/1237414},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {2}
}

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