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Title: Revision of the Phase Diagram of Superconducting U{sub 1{minus}x} Th{sub x}Be{sub 13}

Abstract

Low-temperature specific-heat and thermal-expansion measurements on a single crystal of the heavy-fermion superconductor UBe{sub 13} reveal an anomaly in the superconducting state. The evolution of this feature is studied as a function of Th doping on several U{sub 1{minus}x}Th {sub x}Be{sub 13} polycrystals (x{le}0.03 ), giving rise to a new {open_quotes}line of anomalies,{close_quotes} T{sub L}(x), in the T-x diagram. The anomaly at T{sub L}(x) marks the precursor of the lower of the two phase transitions at x{gt}x{sub cr}{approx}0.019 . Implications for the interpretation of the phase diagram of superconducting U{sub 1{minus}x}Th {sub x}Be{sub 13} are addressed. {copyright} {ital 1998} {ital The American Physical Society}

Authors:
; ; ;  [1]; ; ;  [2]; ;  [3]
  1. Max-Planck Institute for Chemical Physics of Solids, D-01187 Dresden (Germany)
  2. Institute of Solid State Physics, SFB 252, Darmstadt University of Technology, D-64289 Darmstadt (Germany)
  3. Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)
Publication Date:
OSTI Identifier:
342687
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 81; Journal Issue: 20; Other Information: PBD: Nov 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; URANIUM COMPOUNDS; THORIUM COMPOUNDS; BERYLLIUM COMPOUNDS; SUPERCONDUCTORS; PHASE DIAGRAMS; SPECIFIC HEAT; THERMAL EXPANSION; CRYSTAL DOPING; POLYCRYSTALS; TEMPERATURE DEPENDENCE

Citation Formats

Kromer, F, Helfrich, R, Lang, M, Steglich, F, Langhammer, C, Bach, A, Michels, T, Kim, J S, and Stewart, G R. Revision of the Phase Diagram of Superconducting U{sub 1{minus}x} Th{sub x}Be{sub 13}. United States: N. p., 1998. Web. doi:10.1103/PhysRevLett.81.4476.
Kromer, F, Helfrich, R, Lang, M, Steglich, F, Langhammer, C, Bach, A, Michels, T, Kim, J S, & Stewart, G R. Revision of the Phase Diagram of Superconducting U{sub 1{minus}x} Th{sub x}Be{sub 13}. United States. doi:10.1103/PhysRevLett.81.4476.
Kromer, F, Helfrich, R, Lang, M, Steglich, F, Langhammer, C, Bach, A, Michels, T, Kim, J S, and Stewart, G R. Sun . "Revision of the Phase Diagram of Superconducting U{sub 1{minus}x} Th{sub x}Be{sub 13}". United States. doi:10.1103/PhysRevLett.81.4476.
@article{osti_342687,
title = {Revision of the Phase Diagram of Superconducting U{sub 1{minus}x} Th{sub x}Be{sub 13}},
author = {Kromer, F and Helfrich, R and Lang, M and Steglich, F and Langhammer, C and Bach, A and Michels, T and Kim, J S and Stewart, G R},
abstractNote = {Low-temperature specific-heat and thermal-expansion measurements on a single crystal of the heavy-fermion superconductor UBe{sub 13} reveal an anomaly in the superconducting state. The evolution of this feature is studied as a function of Th doping on several U{sub 1{minus}x}Th {sub x}Be{sub 13} polycrystals (x{le}0.03 ), giving rise to a new {open_quotes}line of anomalies,{close_quotes} T{sub L}(x), in the T-x diagram. The anomaly at T{sub L}(x) marks the precursor of the lower of the two phase transitions at x{gt}x{sub cr}{approx}0.019 . Implications for the interpretation of the phase diagram of superconducting U{sub 1{minus}x}Th {sub x}Be{sub 13} are addressed. {copyright} {ital 1998} {ital The American Physical Society}},
doi = {10.1103/PhysRevLett.81.4476},
journal = {Physical Review Letters},
number = 20,
volume = 81,
place = {United States},
year = {1998},
month = {11}
}