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Title: Identification of odd-parity superconductivity in UPt sub 3 from paramagnetic effects on the upper critical field

Abstract

We present a theoretical explanation of the unusual temperature-dependent anisotropy of {ital H}{sub {ital c}2} reported by Shivaram {ital et} {ital al}. for single crystals of UPt{sub 3}, which we argue provides strong support for unconventional {ital odd}-{ital parity} pairing. We show that the observed low-temperature crossover in the anisotropy ratio, {ital H}{sub {ital c}2}{sup {perpendicular}}/{ital H}{sub {ital c}2}{sup {parallel}}, can be explained by paramagnetic limiting for {bold H} parallel to the sixfold axis within BCS pairing theory if the order parameter has {ital odd} {ital parity} and there is strong spin-orbit coupling of the pair spin to the crystal axes.

Authors:
;  [1]
  1. Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL (USA)
Publication Date:
OSTI Identifier:
5965851
Resource Type:
Journal Article
Journal Name:
Physical Review Letters; (USA)
Additional Journal Information:
Journal Volume: 66:4; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; PLATINUM ALLOYS; SUPERCONDUCTIVITY; URANIUM ALLOYS; BCS THEORY; CRITICAL FIELD; ELECTRON PAIRS; HEAVY LEPTONS; HEXAGONAL LATTICES; MONOCRYSTALS; ORDER PARAMETERS; PARAMAGNETISM; PARITY; TEMPERATURE DEPENDENCE; THEORETICAL DATA; ACTINIDE ALLOYS; ALLOYS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CRYSTALS; DATA; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTARY PARTICLES; FERMIONS; INFORMATION; LEPTONS; MAGNETIC FIELDS; MAGNETISM; NUMERICAL DATA; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; PLATINUM METAL ALLOYS; POSTULATED PARTICLES; 360104* - Metals & Alloys- Physical Properties; 656100 - Condensed Matter Physics- Superconductivity

Citation Formats

Choi, C H, and Sauls, J A. Identification of odd-parity superconductivity in UPt sub 3 from paramagnetic effects on the upper critical field. United States: N. p., 1991. Web. doi:10.1103/PhysRevLett.66.484.
Choi, C H, & Sauls, J A. Identification of odd-parity superconductivity in UPt sub 3 from paramagnetic effects on the upper critical field. United States. https://doi.org/10.1103/PhysRevLett.66.484
Choi, C H, and Sauls, J A. 1991. "Identification of odd-parity superconductivity in UPt sub 3 from paramagnetic effects on the upper critical field". United States. https://doi.org/10.1103/PhysRevLett.66.484.
@article{osti_5965851,
title = {Identification of odd-parity superconductivity in UPt sub 3 from paramagnetic effects on the upper critical field},
author = {Choi, C H and Sauls, J A},
abstractNote = {We present a theoretical explanation of the unusual temperature-dependent anisotropy of {ital H}{sub {ital c}2} reported by Shivaram {ital et} {ital al}. for single crystals of UPt{sub 3}, which we argue provides strong support for unconventional {ital odd}-{ital parity} pairing. We show that the observed low-temperature crossover in the anisotropy ratio, {ital H}{sub {ital c}2}{sup {perpendicular}}/{ital H}{sub {ital c}2}{sup {parallel}}, can be explained by paramagnetic limiting for {bold H} parallel to the sixfold axis within BCS pairing theory if the order parameter has {ital odd} {ital parity} and there is strong spin-orbit coupling of the pair spin to the crystal axes.},
doi = {10.1103/PhysRevLett.66.484},
url = {https://www.osti.gov/biblio/5965851}, journal = {Physical Review Letters; (USA)},
issn = {0031-9007},
number = ,
volume = 66:4,
place = {United States},
year = {Mon Jan 28 00:00:00 EST 1991},
month = {Mon Jan 28 00:00:00 EST 1991}
}