Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Stepan Fomichev"'
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:
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. 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
Publikováno v:
Physical Review B. 101
We investigate the impact of electron-lattice coupling on the stability of various magnetic orders in rare-earth nickelates. We use the Hartree-Fock approximation, at zero temperature, to study an effective, two-band model with correlations character
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73bbd6efd31d0f235673f029f56040d3
https://doi.org/10.1103/physrevb.101.024402
https://doi.org/10.1103/physrevb.101.024402