Change of parity of the order parameter in HTSC due to impurities.

Journal Article · Mon Apr 01 00:00:00 EST 1996 · Phys. Rev. B

DOI:https://doi.org/10.1103/PhysRevB.53.R8910· OSTI ID:937817

Abrikosov, A A

The dependence of the critical temperature on impurity concentration is calculated for a model of a tetragonal high-{Tc} superconductor described in a previous paper under conditions when the odd (d symmetry) order parameter is favorable for a clean substance. The critical temperature decreases rapidly with increasing impurity concentration according to the general pair-braking formula and tends to zero at a critical concentration. Since, however, the critical temperature for the phase with an even order parameter is only weakly influenced by impurities, it eventually exceeds the {Tc} of the odd phase, and this means a phase transition to the even phase. The {Tc} curve is expected to have a kink and a long tail.

• Research Organization: Argonne National Laboratory (ANL)
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 937817
• Report Number(s): ANL/MSD/JA-20955
• Journal Information: Phys. Rev. B, Journal Name: Phys. Rev. B Journal Issue: 14 ; Apr. 1, 1996 Vol. 53; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CRITICAL TEMPERATURE
HIGH-TC SUPERCONDUCTORS
IMPURITIES
ORDER PARAMETERS
PARITY
SYMMETRY