Crossover from exciton polarons to trions in doped two-dimensional semiconductors at finite temperature

We study systematically the role of temperature in the optical response of doped two-dimensional semiconductors. By making use of a finite-temperature Fermi-polaron theory, we reveal a crossover from a quantum-degenerate regime with well-defined polaron quasiparticles to an incoherent regime at high...

Full description

Bibliographic Details
Authors: Tiene, Antonio, Mulkerin, Brendan C., Levinsen, Jesper, Parish, Meera M., Marchetti, Francesca María
Format: article
Publication Date:2023
Country:España
Institution:Universidad Autónoma de Madrid
Repository:Biblos-e Archivo. Repositorio Institucional de la UAM
Language:English
OAI Identifier:oai:repositorio.uam.es:10486/711990
Online Access:http://hdl.handle.net/10486/711990
https://dx.doi.org/10.1103/PhysRevB.108.125406
Access Level:Open access
Keyword:Excitons
polariton
polarons
semiconductor doping
Física
id ES_cbf76524aaa9ec73a23311d581dfcce9
oai_identifier_str oai:repositorio.uam.es:10486/711990
network_acronym_str ES
network_name_str España
repository_id_str
spelling Crossover from exciton polarons to trions in doped two-dimensional semiconductors at finite temperatureTiene, AntonioMulkerin, Brendan C.Levinsen, JesperParish, Meera M.Marchetti, Francesca MaríaExcitonspolaritonpolaronssemiconductor dopingFísicaWe study systematically the role of temperature in the optical response of doped two-dimensional semiconductors. By making use of a finite-temperature Fermi-polaron theory, we reveal a crossover from a quantum-degenerate regime with well-defined polaron quasiparticles to an incoherent regime at high temperature or low doping where the lowest-energy "attractive"polaron quasiparticle is destroyed, becoming subsumed into a broad trion-hole continuum. We demonstrate that the crossover is accompanied by significant qualitative changes in both absorption and photoluminescence. In particular, with increasing temperature (or decreasing doping), the emission profile of the attractive branch evolves from a symmetric Lorentzian to an asymmetric peak with an exponential tail involving trions and recoil electrons at finite momentum. We discuss the effect of temperature on the coupling to light for structures embedded into a microcavity, and we show that there can exist well-defined polariton quasiparticles even when the exciton-polaron quasiparticle has been destroyed, where the transition from weak to strong light-matter coupling can be explained in terms of the polaron linewidths and spectral weightsWe gratefully acknowledge useful discussions with D. Efimkin. A.T. and F.M.M. acknowledge financial support from the Ministerio de Ciencia e Innovación (MICINN), Project No. AEI/10.13039/501100011033 (2DEnLight). F.M.M. acknowledges financial support from the Proyecto Sinérgico CAM Grant No. 2020 Y2020/TCS-6545 (NanoQuCo-CM). J.L. and M.M.P. are supported through Australian Research Council Future Fellowships No. FT160100244 and No. FT200100619, respectively. J.L., B.M., and M.M.P. also acknowledge support from the Australian Research Council Centre of Excellence in Future Low-Energy Electronics Technologies (Grant No. CE170100039)American Physical SocietyDepartamento de Física de la Materia CondensadaFacultad de Ciencias20232023-09-15research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/711990https://dx.doi.org/10.1103/PhysRevB.108.125406reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7119902026-06-23T12:46:27Z
dc.title.none.fl_str_mv Crossover from exciton polarons to trions in doped two-dimensional semiconductors at finite temperature
title Crossover from exciton polarons to trions in doped two-dimensional semiconductors at finite temperature
spellingShingle Crossover from exciton polarons to trions in doped two-dimensional semiconductors at finite temperature
Tiene, Antonio
Excitons
polariton
polarons
semiconductor doping
Física
title_short Crossover from exciton polarons to trions in doped two-dimensional semiconductors at finite temperature
title_full Crossover from exciton polarons to trions in doped two-dimensional semiconductors at finite temperature
title_fullStr Crossover from exciton polarons to trions in doped two-dimensional semiconductors at finite temperature
title_full_unstemmed Crossover from exciton polarons to trions in doped two-dimensional semiconductors at finite temperature
title_sort Crossover from exciton polarons to trions in doped two-dimensional semiconductors at finite temperature
dc.creator.none.fl_str_mv Tiene, Antonio
Mulkerin, Brendan C.
Levinsen, Jesper
Parish, Meera M.
Marchetti, Francesca María
author Tiene, Antonio
author_facet Tiene, Antonio
Mulkerin, Brendan C.
Levinsen, Jesper
Parish, Meera M.
Marchetti, Francesca María
author_role author
author2 Mulkerin, Brendan C.
Levinsen, Jesper
Parish, Meera M.
Marchetti, Francesca María
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Física de la Materia Condensada
Facultad de Ciencias
dc.subject.none.fl_str_mv Excitons
polariton
polarons
semiconductor doping
Física
topic Excitons
polariton
polarons
semiconductor doping
Física
description We study systematically the role of temperature in the optical response of doped two-dimensional semiconductors. By making use of a finite-temperature Fermi-polaron theory, we reveal a crossover from a quantum-degenerate regime with well-defined polaron quasiparticles to an incoherent regime at high temperature or low doping where the lowest-energy "attractive"polaron quasiparticle is destroyed, becoming subsumed into a broad trion-hole continuum. We demonstrate that the crossover is accompanied by significant qualitative changes in both absorption and photoluminescence. In particular, with increasing temperature (or decreasing doping), the emission profile of the attractive branch evolves from a symmetric Lorentzian to an asymmetric peak with an exponential tail involving trions and recoil electrons at finite momentum. We discuss the effect of temperature on the coupling to light for structures embedded into a microcavity, and we show that there can exist well-defined polariton quasiparticles even when the exciton-polaron quasiparticle has been destroyed, where the transition from weak to strong light-matter coupling can be explained in terms of the polaron linewidths and spectral weights
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-09-15
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/711990
https://dx.doi.org/10.1103/PhysRevB.108.125406
url http://hdl.handle.net/10486/711990
https://dx.doi.org/10.1103/PhysRevB.108.125406
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869419634662309888
score 15,300719

Similar Items