Zobrazeno 1 - 10
of 129
pro vyhledávání: '"Mona Berciu"'
Autor:
Stepan Fomichev, Mona Berciu
Publikováno v:
JPhys Materials, Vol 6, Iss 3, p 035003 (2023)
Motivated to understand phonon spectrum renormalization in the ground state of the half-filled Su–Schrieffer–Heeger model, we use the Born–Oppenheimer approximation together with the harmonic approximation to evaluate semi-analytically the all-
Externí odkaz:
https://doaj.org/article/e876e1e2a24d4dc6ba5c89e9ab7e71ed
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-6 (2017)
How lattice degrees of freedom affect the topological properties of electrons remains rarely explored. Here, Moeller et al. predict non-trivial topological effects in long-lived polaron bands by studying a two-dimensional model stabilized by realisti
Externí odkaz:
https://doaj.org/article/56b78cb476c44d6b90121aa7d80d0d71
Publikováno v:
Physical Review B. 107
It is well known that phonons can overscreen the bare Coulomb electron-electron repulsion, turning it into the effective attraction that binds the Cooper pairs responsible for BCS superconductivity. Here, we use a simple lattice model to prove that t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c320d5ac21e516cdf4ec925fb62b8985
https://doi.org/10.1103/physrevb.107.195121
https://doi.org/10.1103/physrevb.107.195121
Publikováno v:
Physical Review B. 106
Motivated by the recent X-ray absorption spectroscopy (XAS) and resonant inelastic X-ray scattering (RIXS) experiments, we use a detailed impurity model to explore the nature of the parent compound and hole doped states of (La, Nd, Pr)NiO$_2$ by incl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68865f955d9fd95f8070d1c9cb82e4e3
https://doi.org/10.1103/physrevb.106.115150
https://doi.org/10.1103/physrevb.106.115150
Publikováno v:
Physical Review B. 106
We use the Variational Exact Diagonalization to investigate the single polaron properties for four different dual models, combining a short-range off-diagonal (Peierls) plus a longer-range diagonal (Holstein or breathing-mode) coupling. This allows u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc3dda3363d4ccde457fd7a360eb5163
https://doi.org/10.1103/physrevb.106.035133
https://doi.org/10.1103/physrevb.106.035133
Publikováno v:
Physical Review B. 105
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a60bd18ed25a3befb50140bebbadb9cd
https://doi.org/10.1103/physrevb.105.214310
https://doi.org/10.1103/physrevb.105.214310
We investigate the difference between the coupling of a bare carrier to phonons versus the coupling of a correlations-dressed quasiparticle to phonons, and show that latter may be weak even if the former is strong. Specifically, we analyze the effect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::056d36aa3e7e77b92208636f52d18bdd
http://arxiv.org/abs/2205.06909
http://arxiv.org/abs/2205.06909
Autor:
Götz S. Uhrig, Nathan Cheng, Benedikt Fauseweh, Nikolaj Bittner, Dirk Manske, Andreas P. Schnyder, Lukas Schwarz, H. Krull, Stefan Kaiser, Mona Berciu, Naoto Tsuji
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
Nature Communications
Nature Communications
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 a theory for a tailored nonequilibrium quantum quench to excite all po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f2ed615ab270916bc3ba92339371cb8
https://doaj.org/article/89e46bf5ff2a48e0942aa73fd96459ef
https://doaj.org/article/89e46bf5ff2a48e0942aa73fd96459ef
The community currently lacks a complete understanding of how resonant inelastic x-ray scattering (RIXS) experiments probe the electron-phonon ($e$-ph) interaction in solids. For example, most theoretical models of this process have focused on disper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0367bf40bb0e26de110b639cd15596ef
http://arxiv.org/abs/2201.04577
http://arxiv.org/abs/2201.04577
Publikováno v:
Physical Review B. 104
Motivated by the potential for cuprate-like superconductivity in monolayer rare-earth nickelate superlattices, we study the effects of crystal field splitting, lattice distortions and strain on the charge, magnetic, and orbital order in undoped two-d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c84e28ea3ef93275a2d8d230d10e4c1
https://doi.org/10.1103/physrevb.104.205111
https://doi.org/10.1103/physrevb.104.205111