384 citations · 3.6k across the 118 of their papers we have counts for
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Classification and characterization of nonequilibrium Higgs modes in unconventional superconductors
L. Schwarz, B. Fauseweh, N. Tsuji +8
Recent findings of new Higgs modes in unconventional superconductors require a classification and characterization of the modes allowed by nontrivial gap symmetry. Here we develop…
Holstein polarons and triplet bipolarons with NNN hopping
Monodeep Chakraborty, A. Taraphder, Mona Berciu
We study the ground state of 1D Holstein single polaron with next nearest neighbour electron hopping (NNN), employing a variational approximation based on exact diagonalization. Ou…
Bipolarons bound by repulsive phonon-mediated interactions
John Sous, Mona Berciu, Roman V. Krems
When dressed particles (polarons) exchange quantum phonons, the resulting interactions are generally attractive. If the particles have hard-core statistics and the coupling to phon…
Orbiton-magnon interplay in the spin-orbital polarons of KCuF3 and LaMnO3
Krzysztof Bieniasz, Mona Berciu, Andrzej M. Oleś
We present a quasi-analytical solution of a spin-orbital model of KCuF, using the variational method for Green's functions. By analyzing the spectra for different partial bos…
Dynamics of correlation-frozen antinodal quasiparticles in superconducting cuprates
Federico Cilento, Giulia Manzoni, Andrea Sterzi +15
Many puzzling properties of high- superconducting (HTSC) copper oxides have deep roots in the nature of the antinodal quasiparticles, the elementary excitations with wavevecto…
Phonon-mediated repulsion, sharp transitions and (quasi)self-trapping in the extended Peierls-Hubbard model
J. Sous, M. Chakraborty, C. P. J. Adolphs +2
We study two identical fermions, or two hard-core bosons, in an infinite chain and coupled to phonons by interactions that modulate their hopping as described by the Peierls/Su-Sch…