42 citations · 217 across the 16 of their papers we have counts for
16 papers
Doping dependence and multichannel mediators of superconductivity: Calculations for a cuprate model
Fabian Schrodi, Alex Aperis, Peter M. Oppeneer
We study two aspects of the superconductivity in a cuprate model system, its doping dependence and the influence of competing pairing mediators. We first include electron-phonon in…
Selfconsistent investigation of multichannel superconductivity in a cuprate model system
Fabian Schrodi, Alex Aperis, Peter M. Oppeneer
The origin of high-temperature superconductivity in cuprates is still an unresolved issue. Among the most likely candidates for mediating the Cooper pair condensate are spin fluctu…
Induced odd-frequency superconducting state in vertex-corrected Eliashberg theory
Fabian Schrodi, Alex Aperis, Peter M. Oppeneer
We show that vertex corrections to Migdal's theorem in general induce an odd-frequency spin-triplet superconducting order parameter, which coexists with its more commonly known eve…
Prediction of an unusual trigonal phase of superconducting LaH stable from 250 to 425 GPa pressure
Ashok K. Verma, P. Modak, Fabian Schrodi +2
Based on evolutionary crystal structure searches in combination with ab initio calculations, we predict an unusual structural phase of the superconducting LaH that is stable…
Unconventional superconductivity mediated solely by isotropic electron-phonon interaction
Fabian Schrodi, Peter M. Oppeneer, Alex Aperis
Unconventional superconductivity is commonly linked to electronic pairing mechanisms, since it is believed that the conventional electron-phonon interaction (EPI) cannot cause sign…
Exploring multichannel superconductivity in ThFeAsN
Fabian Schrodi, Fairoja Cheenicode Kabeer, Alex Aperis +1
We investigate theoretically the superconducting state of the undoped Fe-based superconductor ThFeAsN. Using input from calculations, we solve the Fermi-surface based,…
Phonon-mode specific contributions to room-temperature superconductivity in atomic hydrogen at high pressures
Ashok K. Verma, P. Modak, Fabian Schrodi +2
We investigate the role of specific phonon mode symmetries for the room temperature superconductivity in atomic hydrogen under large pressure. Using anisotropic Migdal-Eliashberg t…
Cascade of replica bands in flat band systems: predictions for twisted bilayer graphene
Fabian Schrodi, Alex Aperis, Peter M. Oppeneer
We investigate the effect of electron-phonon interactions (EPI) in systems exhibiting one or more flat electron bands close to the Fermi level and a comparatively large phonon ener…
Influence of phonon renormalization in Eliashberg theory for superconductivity in 2D and 3D systems
Fabian Schrodi, Alex Aperis, Peter M. Oppeneer
Eliashberg's foundational theory of superconductivity is based on the application of Migdal's approximation, which states that vertex corrections to first order electron-phonon sca…
Multichannel superconductivity of monolayer FeSe on SrTiO: Interplay of spin fluctuations and electron-phonon interaction
Fabian Schrodi, Alex Aperis, Peter Oppeneer
We investigate the effects of electron-phonon coupling, as well as of spin and charge fluctuations on the superconducting state in a single layer of FeSe on SrTiO substrate. Th…
Eliashberg theory for spin-fluctuations mediated superconductivity -- Application to bulk and monolayer FeSe
Fabian Schrodi, Alex Aperis, Peter M. Oppeneer
We present a novel method for embedding spin and charge fluctuations in an anisotropic, multi-band and full-bandwidth Eliashberg treatment of superconductivity. Our analytical fram…
Full-bandwidth Eliashberg theory of superconductivity beyond Migdal's approximation
Fabian Schrodi, Peter M. Oppeneer, Alex Aperis
We solve the anisotropic, full-bandwidth and non-adiabatic Eliashberg equations for phonon-mediated superconductivity by fully including the first vertex correction in the electron…
Prominent Cooper Pairing Away From the Fermi Level and its Spectroscopic Signature in Twisted Bilayer Graphene
Fabian Schrodi, Alex Aperis, Peter M. Oppeneer
We investigate phonon-mediated Cooper pairing in flat electronic band systems by solving the full-bandwidth multiband Eliashberg equations for superconductivity in magic angle twis…
Increased Performance of Matsubara space calculations: A case study within Eliashberg theory
Fabian Schrodi, Alex Aperis, Peter M. Oppeneer
We present a method to considerably improve the numerical performance for solving Eliashberg-type coupled equations on the imaginary axis. Instead of the standard practice of intro…
Self-consistent temperature dependence of quasiparticle bands in monolayer FeSe on SrTiO
Fabian Schrodi, Alex Aperis, Peter M. Oppeneer
We study the temperature evolution of the quasiparticle bands of the FeSe monolayer on the SrTiO (STO) substrate from 10 to 300 K by applying the anisotropic, multiband and ful…
Density-of-states of many-body quantum systems from tensor networks
Fabian Schrodi, Pietro Silvi, Ferdinand Tschirsich +2
We present a technique to compute the microcanonical thermodynamical properties of a manybody quantum system using tensor networks. The Density Of States (DOS), and more general sp…