skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Many-body Green's function approaches to the doped Fröhlich solid: Exact solutions and anomalous mass enhancement

Journal Article · · Physical Review. B

In polar semiconductors and insulators, the Fröhlich interaction between electrons and long-wavelength longitudinal optical phonons induces a many-body renormalization of the carrier effective masses and the appearance of characteristic phonon sidebands in the spectral function, commonly dubbed “polaron satellites.” The simplest model that captures these effects is the Fröhlich model, whereby electrons in a parabolic band interact with a dispersionless longitudinal optical phonon. The Fröhlich model has been employed in a number of seminal papers, from early perturbation-theory approaches to modern diagrammatic Monte Carlo calculations. One limitation of this model is that it focuses on undoped systems, thus ignoring carrier screening and Pauli blocking effects that are present in real experiments on doped samples. Here, to overcome this limitation, we extend the Fröhlich model to the case of doped systems, and we provide exact solutions for the electron spectral function, mass enhancement, and polaron satellites. We perform the analysis using two approaches, namely, Dyson’s equation with the Fan-Migdal self-energy, and the second-order cumulant expansion. We find that these two approaches provide qualitatively different results. In particular, Dyson’s approach yields better quasiparticle masses and worse satellites, while the cumulant approach provides better satellite structures, at the price of worse quasiparticle masses. Both approaches yield an anomalous enhancement of the electron effective mass at finite doping levels, which in turn leads to a breakdown of the quasiparticle picture in a significant portion of the phase diagram.

Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
SC0020129; DMR21002; ERCAP0016747
OSTI ID:
1903346
Journal Information:
Physical Review. B, Vol. 105, Issue 8; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (66)

Tailoring the nature and strength of electron–phonon interactions in the SrTiO3(001) 2D electron liquid journal April 2016
Critical Doping for the Onset of a Two-Band Superconducting Ground State in SrTiO 3 δ journal May 2014
Observation of a two-dimensional liquid of Fröhlich polarons at the bare SrTiO3 surface journal October 2015
A new variational ansatz in the polaron theory journal January 1968
Diagrams in the polaron model journal July 1986
Many-Body Effects on the Zero-Point Renormalization of the Band Structure journal May 2014
Spectral fingerprints of electron-plasmon coupling journal July 2015
Dependence of the Superconducting Transition Temperature on Carrier Concentration in Semiconducting SrTi O 3 journal March 1965
Electron-Phonon Renormalization of the Direct Band Gap of Diamond journal December 2010
Fröhlich polaron and bipolaron: recent developments journal May 2009
Physical Origin of Satellites in Photoemission of Doped Graphene: An Ab Initio G W Plus Cumulant Study journal April 2013
Satellite structures in the spectral functions of the two-dimensional electron gas in semiconductor quantum wells: A G W plus cumulant study journal March 2014
Long-range quadrupole electron-phonon interaction from first principles journal September 2020
Satellite band structure in silicon caused by electron-plasmon coupling journal May 2015
Band Structures of Plasmonic Polarons journal April 2015
Ab Initio Finite-Temperature Excitons journal September 2008
Cumulant Green's function calculations of plasmon satellites in bulk sodium: Influence of screening and the crystal environment journal January 2018
Dispersion and line shape of plasmon satellites in one, two, and three dimensions journal June 2016
XX. Properties of slow electrons in polar materials journal March 1950
Wannier interpolation of the electron-phonon matrix elements in polar semiconductors: Polar-optical coupling in GaAs journal August 2015
The Motion of Slow Electrons in Polar Crystals journal November 1952
Carrier Lifetimes and Polaronic Mass Enhancement in the Hybrid Halide Perovskite CH 3 NH 3 PbI 3 from Multiphonon Fröhlich Coupling journal August 2018
Crossover from lattice to plasmonic polarons of a spin-polarised electron gas in ferromagnetic EuO journal June 2018
Phonon-dressed two-dimensional carriers on the ZnO surface journal October 2016
Fröhlich Electron-Phonon Vertex from First Principles journal October 2015
Interfacial mode coupling as the origin of the enhancement of Tc in FeSe films on SrTiO3 journal November 2014
Superconductivity in Semiconducting SrTi O 3 journal April 1964
Ab Initio Electron-Phonon Interactions in Correlated Electron Systems journal September 2021
Electron-phonon interactions from first principles journal February 2017
A Difficulty in Fröhlich's Theory of Superconductivity journal July 1951
Two-dimensional electron gas with universal subbands at the surface of SrTiO3 journal January 2011
Angle-resolved photoemission studies of the cuprate superconductors journal April 2003
Phonon-induced renormalization of electron wave functions journal March 2020
Creation and control of a two-dimensional electron liquid at the bare SrTiO3 surface journal January 2011
Phase Transition and Padé Approximants for Fröhlich Polarons journal September 1989
Singularities in the X-Ray Spectra of Metals journal January 1970
On the combined use of GW approximation and cumulant expansion in the calculations of quasiparticle spectra: The paradigm of Si valence bands journal July 2016
Dynamical effects in electron spectroscopy journal November 2015
High Mobility in LaAlO3/SrTiO3 Heterostructures: Origin, Dimensionality, and Perspectives journal May 2007
Slow Electrons in a Polar Crystal journal February 1955
The GW plus cumulant method and plasmonic polarons: application to the homogeneous electron gas* journal November 2016
Solids with thermal or static disorder. I. One-electron properties journal November 1978
Polarons in materials journal March 2021
Fermi Surface and Some Simple Equilibrium Properties of a System of Interacting Fermions journal August 1960
Origin of the crossover from polarons to Fermi liquids in transition metal oxides journal June 2017
Polaron spectral properties in doped ZnO and SrTiO 3 from first principles journal December 2020
Electron-Phonon beyond Fröhlich: Dynamical Quadrupoles in Polar and Covalent Solids journal September 2020
Tunable Polaronic Conduction in Anatase TiO 2 journal May 2013
Theory of Superconductivity journal December 1957
Cumulant expansion for phonon contributions to the electron spectral function journal November 2014
Theory of the temperature dependence of electronic band structures journal June 1976
Predicting charge transport in the presence of polarons: The beyond-quasiparticle regime in SrTiO 3 journal December 2019
Diagrammatic quantum Monte Carlo study of the Fröhlich polaron journal September 2000
Electron-plasmon and electron-phonon satellites in the angle-resolved photoelectron spectra of n -doped anatase TiO 2 journal April 2018
Polaron Problem by Diagrammatic Quantum Monte Carlo journal September 1998
Unraveling intrinsic correlation effects with angle-resolved photoemission spectroscopy journal October 2020
A high-mobility electron gas at the LaAlO3/SrTiO3 heterointerface journal January 2004
Theory of the Superconducting State. I. The Ground State at the Absolute Zero of Temperature journal September 1950
Many-body large polaron optical conductivity in SrTi 1 x Nb x O 3 journal March 2010
Predominance of non-adiabatic effects in zero-point renormalization of the electronic band gap journal November 2020
Theory of electron-plasmon coupling in semiconductors journal September 2016
Polaronic metal state at the LaAlO3/SrTiO3 interface journal January 2016
Effects of Recoil on Shake-Up Spectra in Metals journal January 1980
Electron-polaron dichotomy of charge carriers in perovskite oxides journal April 2020
Nonlinear response in the cumulant expansion for core-level photoemission journal July 2020
Quasiparticles and phonon satellites in spectral functions of semiconductors and insulators: Cumulants applied to the full first-principles theory and the Fröhlich polaron journal March 2018

Similar Records

Ab initio self-consistent many-body theory of polarons at all couplings
Journal Article · Tue Aug 09 00:00:00 EDT 2022 · Physical Review. B · OSTI ID:1903346

Unified ab initio description of Fröhlich electron-phonon interactions in two-dimensional and three-dimensional materials
Journal Article · Tue Mar 15 00:00:00 EDT 2022 · Physical Review. B · OSTI ID:1903346

Unified Approach to Polarons and Phonon-Induced Band Structure Renormalization
Journal Article · Tue Aug 09 00:00:00 EDT 2022 · Physical Review Letters · OSTI ID:1903346