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Title: Electronic and phononic properties of a two-dimensional electron gas coupled to dipolar phonons via small-momentum-transfer scattering

Journal Article · · Physical Review B
ORCiD logo [1];  [2]; ORCiD logo [1]
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)

We study the electron and phonon spectral functions as well as superconductivity for a two-dimensional electron gas coupled to dipolar phonons via small-momentum-transfer scattering. The results reported here are obtained through sign-problem-free quantum Monte Carlo simulation. Hence, aside from modeling there are no further approximations. Our results can be relevant to the high-temperature superconductor at the interface between a unit-cell-thick FeSe and SrTiO3. Our results give support to the interpretation that the observed replica band in unit-cell-thick FeSe on SrTiO3 is due to the small-momentum transfer interaction between the FeSe electrons and a branch of polar STO phonons. Furthermore, we conclude that while the small-momentum electron-phonon interaction can not induce strong Cooper pairing by itself, it can enhance the Cooper pairing triggered by other pairing interactions.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
Grant/Contract Number:
AC02-76SF00515; AC02-05CH11231; GBMF4545
OSTI ID:
1594966
Journal Information:
Physical Review B, Vol. 100, Issue 24; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

References (72)

Unconventional pairing in single FeSe layers journal July 2019
Superconducting Gap Anisotropy in Monolayer FeSe Thin Film journal September 2016
Interface-induced superconductivity and strain-dependent spin density waves in FeSe/SrTiO3 thin films journal May 2013
What makes the Tc of monolayer FeSe on SrTiO3 so high: a sign-problem-free quantum Monte Carlo study journal June 2016
Constrained sampling method for analytic continuation journal December 2016
Fragility of Charge Order Near an Antiferromagnetic Quantum Critical Point journal June 2018
Superconductivity above 100 K in single-layer FeSe films on doped SrTiO3 journal November 2014
Coexistence of superconductivity and antiferromagnetism in (Li0.8Fe0.2)OHFeSe journal December 2014
Interface-Induced High-Temperature Superconductivity in Single Unit-Cell FeSe Films on SrTiO 3 journal March 2012
Charge Order in the Holstein Model on a Honeycomb Lattice journal February 2019
Diagrammatic determinantal quantum Monte Carlo methods: Projective schemes and applications to the Hubbard-Holstein model journal July 2007
Charge-Density-Wave Transitions of Dirac Fermions Coupled to Phonons journal February 2019
Superconductivity dichotomy in K-coated single and double unit cell FeSe films on SrTi O 3 journal November 2015
Onset of the Meissner effect at 65 K in FeSe thin film grown on Nb-doped SrTiO 3 substrate journal July 2015
Competition Between Antiferromagnetic and Charge-Density-Wave Order in the Half-Filled Hubbard-Holstein Model journal December 2012
On the origin of the shallow and “replica” bands in FeSe monolayer superconductors journal March 2017
Routes to High-Temperature Superconductivity: A Lesson from FeSe/SrTiO 3 journal March 2018
Phase diagram and electronic indication of high-temperature superconductivity at 65 K in single-layer FeSe films journal May 2013
Interfacial mode coupling as the origin of the enhancement of Tc in FeSe films on SrTiO3 journal November 2014
Phonon Dispersion and the Competition between Pairing and Charge Order journal May 2018
Enhanced superconductivity due to forward scattering in FeSe thin films on SrTiO 3 substrates journal February 2016
Giant LO-TO splittings in perovskite ferroelectrics journal May 1994
Itinerant quantum critical point with frustration and a non-Fermi liquid journal July 2018
Evidence of cooperative effect on the enhanced superconducting transition temperature at the FeSe/SrTiO3 interface journal February 2019
Common electronic origin of superconductivity in (Li,Fe)OHFeSe bulk superconductor and single-layer FeSe/SrTiO3 films journal February 2016
Superconductivity and nematic fluctuations in a model of doped FeSe monolayers: Determinant quantum Monte Carlo study journal October 2016
Split Orthogonal Group: A Guiding Principle for Sign-Problem-Free Fermionic Simulations journal December 2015
Electron Phonon Coupling versus Photoelectron Energy Loss at the Origin of Replica Bands in Photoemission of FeSe on SrTiO 3 journal June 2018
Ising Nematic Quantum Critical Point in a Metal: A Monte Carlo Study journal August 2016
Two-dimensional Holstein-Hubbard model: Critical temperature, Ising universality, and bipolaron liquid journal August 2018
Sign-Problem-Free Quantum Monte Carlo of the Onset of Antiferromagnetism in Metals journal December 2012
Solving the fermion sign problem in quantum Monte Carlo simulations by Majorana representation journal June 2015
Quasiparticle properties of the nonlinear Holstein model at finite doping and temperature journal August 2015
Sign-Problem-Free Fermionic Quantum Monte Carlo: Developments and Applications journal March 2019
Sufficient condition for absence of the sign problem in the fermionic quantum Monte Carlo algorithm journal April 2005
The electron–phonon interaction with forward scattering peak is dominant in high T c superconductors of FeSe films on ${{\rm{SrTiO}}}_{3}$ (TiO 2 ) journal January 2017
Charge-density-wave and pairing susceptibilities in a two-dimensional electron-phonon model journal February 1991
Pseudogap crossover in the electron-phonon system journal May 2019
Symmetry-enforced self-learning Monte Carlo method applied to the Holstein model journal July 2018
Non-Fermi Liquid at ( 2 + 1 ) D Ferromagnetic Quantum Critical Point journal September 2017
Tuning the band structure and superconductivity in single-layer FeSe by interface engineering journal September 2014
What makes the T c of FeSe/SrTiO 3 so high? journal November 2015
A Novel Technique for the Simulation of Interacting Fermion Systems journal April 1989
Majorana Positivity and the Fermion Sign Problem of Quantum Monte Carlo Simulations journal June 2016
Majorana-Time-Reversal Symmetries: A Fundamental Principle for Sign-Problem-Free Quantum Monte Carlo Simulations journal December 2016
Competing Orders in a Nearly Antiferromagnetic Metal journal August 2016
Phonon linewidth due to electron-phonon interactions with strong forward scattering in FeSe thin films on oxide substrates journal August 2017
Electronic origin of high-temperature superconductivity in single-layer FeSe superconductor journal January 2012
Dipolar phonons and electronic screening in monolayer FeSe on SrTiO 3 journal August 2017
Charge transfer and electron-phonon coupling in monolayer FeSe on Nb-doped SrTiO 3 journal June 2016
Renormalization of spectra by phase competition in the half-filled Hubbard-Holstein model journal April 2015
Role of SrTiO 3 phonon penetrating into thin FeSe films in the enhancement of superconductivity journal August 2016
Monolayer FeSe on SrTiO 3 journal March 2017
Stochastic method for analytic continuation of quantum Monte Carlo data journal May 1998
Nature of the effective interaction in electron-doped cuprate superconductors: A sign-problem-free quantum Monte Carlo study journal June 2017
Interface induced high temperature superconductivity in single unit-cell FeSe films on SrTiO3 text January 2012
Electronic Origin of High Temperature Superconductivity in Single-Layer FeSe Superconductor text January 2012
Sign-problem-free quantum Monte Carlo of the onset of antiferromagnetism in metals text January 2012
Interfacial mode coupling as the origin of the enhancement of Tc in FeSe films on SrTiO3 text January 2013
Renormalization of spectra by phase competition in the half-filled Hubbard-Holstein model text January 2015
Constrained sampling method for analytic continuation text January 2015
Common Electronic Origin of Superconductivity in (Li,Fe)OHFeSe Bulk Superconductor and Single-Layer FeSe/SrTiO3 Films text January 2015
Onset of the Meissner effect at 65 K in FeSe thin film grown on Nb doped SrTiO3 substrate text January 2015
What makes the Tc of monolayer FeSe on SrTiO3 so high: a sign-problem-free quantum Monte Carlo study text January 2015
Superconducting gap anisotropy in monolayer FeSe thin film text January 2015
Majorana Positivity and the Fermion sign problem of Quantum Monte Carlo Simulations text January 2016
Majorana-time-reversal symmetries: a fundamental principle for sign-problem-free quantum Monte Carlo simulations text January 2016
Phonon linewidth due to electron-phonon interactions with strong forward scattering in FeSe thin films on oxide substrates text January 2017
Monolayer FeSe on SrTiO$_3$ text January 2017
Itinerant quantum critical point with frustration and non-Fermi-liquid text January 2017
Charge Order in the Holstein Model on a Honeycomb Lattice text January 2018
A sufficient condition for the absence of the sign problem in the fermionic quantum Monte-Carlo algorithm text January 2004

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