Time-dependent dichroism and transient valley polarisation in monolayer transition metal dichalcogenides under finite-pulse radiation

13 pages, 9 figures

Detalles Bibliográficos
Autores: Gómez, Alejandro S., Baba, Yuriko, Domínguez-Adame, Francisco, Molina, Rafael A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/397363
Acceso en línea:http://hdl.handle.net/10261/397363
https://api.elsevier.com/content/abstract/scopus_id/105008489866
Access Level:acceso abierto
Palabra clave:Finite pulses
Floquet physics
Time-dependent dichroism
Transition metal dichalcogenides
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spelling Time-dependent dichroism and transient valley polarisation in monolayer transition metal dichalcogenides under finite-pulse radiationGómez, Alejandro S.Baba, YurikoDomínguez-Adame, FranciscoMolina, Rafael A.Finite pulsesFloquet physicsTime-dependent dichroismTransition metal dichalcogenides13 pages, 9 figuresRecent advances in time-resolved angle-resolved photoemission spectroscopy have enabled access to ultrafast electron states and their spin dynamics in solids. Atomically thin transition metal dichalcogenides are paradigmatic two-dimensional materials where electron momentum and spin degrees of freedom are coupled, being suitable candidates for time-resolved spectroscopy studies. In this work, we present a thorough study of the electron dynamics when these materials are subject to an intense finite-pulse driving radiation. We extend the scope of the conventional Floquet engineering and rely on the so-called t − t ′ formalism to deal with driving fields described with two distinct time scales, namely the envelope amplitude timescale and the time period of the external field. The interplay between the finite-pulse timescales and the intrinsic properties of the electrons gives rise to transient valley polarisation and dynamical modifications of band structures, revealed by the time-dependent circular dichroism of the sample.The work has been supported by Comunidad de Madrid (Recovery, Transformation and Resilience Plan), NextGenerationEU from the European Union (Grant MAD2D-CM-UCM5) and ‘Talento Program’ (Grant 2019-T1/IND-14088), Agencia Estatal de Investigación (Grant PID2022-136285NB-C31).Peer reviewedIOP PublishingComunidad de MadridEuropean CommissionMinisterio de Ciencia e Innovación (España)Gómez, Alejandro S. [0009-0001-1117-4490]Baba, Yuriko [0000-0003-0647-3477]Domínguez-Adame, Francisco [0000-0002-5256-4196]Molina, Rafael A. [0000-0001-5728-0734]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/397363https://api.elsevier.com/content/abstract/scopus_id/105008489866reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-136285NB-C31https://doi.org/10.1088/2515-7639/ade292Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3973632026-05-22T06:33:51Z
dc.title.none.fl_str_mv Time-dependent dichroism and transient valley polarisation in monolayer transition metal dichalcogenides under finite-pulse radiation
title Time-dependent dichroism and transient valley polarisation in monolayer transition metal dichalcogenides under finite-pulse radiation
spellingShingle Time-dependent dichroism and transient valley polarisation in monolayer transition metal dichalcogenides under finite-pulse radiation
Gómez, Alejandro S.
Finite pulses
Floquet physics
Time-dependent dichroism
Transition metal dichalcogenides
title_short Time-dependent dichroism and transient valley polarisation in monolayer transition metal dichalcogenides under finite-pulse radiation
title_full Time-dependent dichroism and transient valley polarisation in monolayer transition metal dichalcogenides under finite-pulse radiation
title_fullStr Time-dependent dichroism and transient valley polarisation in monolayer transition metal dichalcogenides under finite-pulse radiation
title_full_unstemmed Time-dependent dichroism and transient valley polarisation in monolayer transition metal dichalcogenides under finite-pulse radiation
title_sort Time-dependent dichroism and transient valley polarisation in monolayer transition metal dichalcogenides under finite-pulse radiation
dc.creator.none.fl_str_mv Gómez, Alejandro S.
Baba, Yuriko
Domínguez-Adame, Francisco
Molina, Rafael A.
author Gómez, Alejandro S.
author_facet Gómez, Alejandro S.
Baba, Yuriko
Domínguez-Adame, Francisco
Molina, Rafael A.
author_role author
author2 Baba, Yuriko
Domínguez-Adame, Francisco
Molina, Rafael A.
author2_role author
author
author
dc.contributor.none.fl_str_mv Comunidad de Madrid
European Commission
Ministerio de Ciencia e Innovación (España)
Gómez, Alejandro S. [0009-0001-1117-4490]
Baba, Yuriko [0000-0003-0647-3477]
Domínguez-Adame, Francisco [0000-0002-5256-4196]
Molina, Rafael A. [0000-0001-5728-0734]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Finite pulses
Floquet physics
Time-dependent dichroism
Transition metal dichalcogenides
topic Finite pulses
Floquet physics
Time-dependent dichroism
Transition metal dichalcogenides
description 13 pages, 9 figures
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/397363
https://api.elsevier.com/content/abstract/scopus_id/105008489866
url http://hdl.handle.net/10261/397363
https://api.elsevier.com/content/abstract/scopus_id/105008489866
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-136285NB-C31
https://doi.org/10.1088/2515-7639/ade292
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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