TY - JOUR
T1 - Enhancement of superconductivity near a nematic quantum critical point
AU - Lederer, S.
AU - Schattner, Y.
AU - Berg, Erez
AU - Kivelson, S. A.
N1 - Publisher Copyright: © 2015 American Physical Society.
PY - 2015/3/2
Y1 - 2015/3/2
N2 - We consider a low Tc metallic superconductor weakly coupled to the soft fluctuations associated with proximity to a nematic quantum critical point (NQCP). We show that (1) a BCS-Eliashberg treatment remains valid outside of a parametrically narrow interval about the NQCP, (2) the symmetry of the superconducting state (d wave, s wave, p wave) is typically determined by the noncritical interactions, but Tc is enhanced by the nematic fluctuations in all channels, and (3) in 2D, this enhancement grows upon approach to criticality up to the point at which the weak coupling approach breaks down, but in 3D, the enhancement is much weaker.
AB - We consider a low Tc metallic superconductor weakly coupled to the soft fluctuations associated with proximity to a nematic quantum critical point (NQCP). We show that (1) a BCS-Eliashberg treatment remains valid outside of a parametrically narrow interval about the NQCP, (2) the symmetry of the superconducting state (d wave, s wave, p wave) is typically determined by the noncritical interactions, but Tc is enhanced by the nematic fluctuations in all channels, and (3) in 2D, this enhancement grows upon approach to criticality up to the point at which the weak coupling approach breaks down, but in 3D, the enhancement is much weaker.
UR - http://www.scopus.com/inward/record.url?scp=84924388127&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.114.097001
DO - 10.1103/PhysRevLett.114.097001
M3 - مقالة
SN - 0031-9007
VL - 114
JO - Physical review letters
JF - Physical review letters
IS - 9
M1 - 097001
ER -