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Non-Fermi liquid and pairing in electron-doped cuprates
Pavel Krotkov, Andrey V. Chubukov
We study the normal state and pairing instability in electron-doped cuprates near optimal doping. We show that the fermionic self-energy has a non-Fermi liquid form leading to pecu…
Self-energy of a nodal fermion in a d-wave superconductor
A. V. Chubukov, A. M. Tsvelik
We re-consider the self-energy of a nodal (Dirac) fermion in a 2D d-wave superconductor. A conventional belief is that Im Σ(ω, T) \sim max (ω^3, T^3). We show that Σ(ω, k, T) for k…
High Frequency Behavior of the Infrared Conductivity of Cuprates
M. R. Norman, A. V. Chubukov
We analyze recent infrared conductivity data in the normal state of the cuprates. We find that the high frequency behavior, which has been suggested as evidence for quantum critica…
Nonanalytic corrections to the specific heat of a three-dimensional Fermi liquid
A. V. Chubukov, D. L. Maslov, A. J. Millis
We revisit the issue of the leading nonanalytic corrections to the temperature dependence of the specific heat coefficient, for a system of interacting fermions in t…
Resonance mode in Raman scattering -- a way to distinguish between spin-fluctuation and phonon-mediated wave superconductivity
A. V. Chubukov, T. P. Devereaux, M. V. Klein
We argue that Raman scattering in symmetry allows one to distinguish between phonon-mediated and magnetically-mediated wave superconductivity. In spin mediated superco…
Strong coupling superconductivity due to massless boson exchange
Andrey V. Chubukov, Joerg Schmalian
We solve the problem of fermionic pairing mediated by a massless boson in the limit of large coupling constant. At weak coupling, the transition temperature is exponentially small…