Effect of nonmagnetic impurities on antiferromagnetic superconductors

Journal Article · Thu Dec 01 04:00:00 EST 1983 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.28.6290· OSTI ID:5137641

Okabe, Y; Nagi, A D.S.

By the treatment of the electron-impurity scattering exactly by means of at matrix, the effect of nonmagnetic impurities on antiferromagnetic superconductors has been investigated in detail. Our study is an extension of the recent work of Nass, Levin, and Grest to the strong-scattering case. The appearance of bound states due to impurities for H/sub Q/>..delta.. is discussed (here H/sub Q/ is the antiferromagnetic molecular field and ..delta.. is the superconducting order parameter). Investigating the density of states (N(..omega..)), we show the growth of the ''impurity band'' with the increase in impurity concentration. The ''dirty''-limit behavior of the system and the condition for the appearance of the gaplessness are discussed analytically.

• Research Organization: Guelph-Waterloo Program for Graduate Work in Physics, Department of Physics, University of Waterloo, Waterloo, Ontario N2L3G1, Canada
• OSTI ID: 5137641
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 28:11; ISSN PRBMD
• Country of Publication: United States
• Language: English

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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETIC MATERIALS
ANTIFERROMAGNETISM
BCS THEORY
BOUND STATE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY-LEVEL DENSITY
IMPURITIES
MAGNETIC MATERIALS
MAGNETISM
MATERIALS
MATRICES
ORDER PARAMETERS
PHYSICAL PROPERTIES
QUANTITY RATIO
S MATRIX
SUPERCONDUCTIVITY
SUPERCONDUCTORS