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The interplay between superconductivity and non-Fermi liquid at a quantum-critical point in a metal
Andrey V. Chubukov, Artem Abanov, Yuxuan Wang +1
Near a quantum-critical point, a metal reveals two competing tendencies: destruction of fermionic coherence and attraction in one or more pairing channels. We analyze the competiti…
Hidden and mirage collective modes in two dimensional Fermi liquids
Avraham Klein, Dmitrii L. Maslov, Andrey V. Chubukov
We show that a two-dimensional (2D) isotropic Fermi liquid harbors two new types of collective modes, driven by quantum fluctuations, in addition to conventional zero sound: "hidde…
Kohn-Luttinger Correction to Tc in a Phonon Superconductor
Dan Phan, Andrey V Chubukov
Weak coupling theory predicts the critical temperature of a phonon superconductor to be , where is the Debye frequency, is the dimensi…
Nematic superconductivity in twisted bilayer graphene
Dmitry V. Chichinadze, Laura Classen, Andrey V. Chubukov
Twisted bilayer graphene displays insulating and superconducting phases caused by exceptional flattening of its lowest energy bands. Superconductivity with highest appears at…
Raman response in the nematic phase of FeSe
Mattia Udina, Marco Grilli, Lara Benfatto +1
Raman experiments on bulk FeSe revealed that the low-frequency part of Raman response , which probes nematic fluctuations, rapidly decreases below the nematic…
Collective modes near a Pomeranchuk instability
Avraham Klein, Dmitrii L. Maslov, Lev P. Pitaevskii +1
We consider collective excitations of a Fermi liquid. For each value of the angular momentum , we study the evolution of longitudinal and transverse collective modes in the char…