Effective action approach and Carlson-Goldman mode in d-wave superconductors
Sergei G. Sharapov, Hans Beck
Abstract
We theoretically investigate the Carlson-Goldman (CG) mode in two-dimensional clean d-wave superconductors using the effective ``phase only'' action formalism. In conventional s-wave superconductors, it is known that the CG mode is observed as a peak in the structure factor of the pair susceptibility S(Ω, K) only just below the transition temperature Tc and only in dirty systems. On the other hand, our analytical results support the statement by Y.Ohashi and S.Takada, Phys.Rev.B 62, 5971 (2000) that in d-wave superconductors the CG mode can exist in clean systems down to the much lower temperatures, T ≈ 0.1 Tc. We also consider the manifestations of the CG mode in the density-density and current-current correlators and discuss the gauge independence of the obtained results.
Create a lesson
Related papers
Variational Monte Carlo Study of Superconductivity in a Correlated System with Broken Inversion Symmetry
Tsuyoshi Imazu, Katsunori Kubo
Predictions of superconducting properties from chemical bonding interactions
Francesco Belli, Trinidad Novoa, Ion Errea et al.
Exact Mirror-Parity Selection Rule for Electron-Phonon Coupling in Two-Dimensional Crystals
Nicolás F. Barrera, Javiera Cabezas-Escares, Francisco Munoz et al.
Ta-based S-I-S junctions for integrated superconducting electronics
Trent Borman, Cameron Bullock, Cole Chason et al.
Nonreciprocal charge transport in quantum materials: From superconductors to magnetic systems
Boning Yu, Yalei Huang, Alltrin Dhanarajagopal et al.
Intra-unit-cell Josephson scanning tunneling spectroscopy of the cuprate Bi1.2Pb0.8Sr2CaCu2O8+δ
Fengyu Yao, Jiong Mei, Wenjin Mao et al.