2026-06-08T07:26:39Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/1058182025-03-18T12:58:22Zcom_20.500.14352_14col_20.500.14352_15
Disentangling photodoping, photoconductivity, and photosuperconductivity in the cuprates
El Hage, Ralph
Sánchez Manzano, David
Humbert, Vincent
Carreira, Santiago
Rouco Gómez, Víctor
Sander, Anke
Cuéllar Jiménez, Fabian Andrés
Seurre, Kevin
Lagarrigue, Aurelien
Mesoraca, Salvatore
Briatico, Javier
Trastoy, Juan
Santamaría Sánchez-Barriga, Jacobo
Villegas, Javier
538.9
Density-wave order
Persistent photoconductivity
Transport properties
Normal-stage
T-C
Photoinduced superconductivity
Critical-temperature
Phase-diagram
Charge order
Oxygen
Física del estado sólido
2211.09 Propiedades de Portadores Electrónicos
The normal-state conductivity and superconducting critical temperature of oxygen-deficient YBa2Cu3O7-delta can be persistently enhanced by illumination. Strongly debated for years, the origin of those effects-termed persistent photoconductivity and photosuperconductivity (PPS)-has remained an unsolved critical problem, whose comprehension may provide key insights to harness the origin of hightemperature superconductivity itself. Here, we make essential steps toward understanding PPS. While the models proposed so far assume that it is caused by a carrier-density increase (photodoping) observed concomitantly, our experiments contradict such conventional belief: we demonstrate that it is instead linked to a photo-induced decrease of the electronic scattering rate. Furthermore, we find that the latter effect and photodoping are completely disconnected and originate from different microscopic mechanisms, since they present different wavelength and oxygen-content dependences as well as strikingly different relaxation dynamics. Besides helping disentangle photodoping, persistent photoconductivity, and PPS, our results provide new evidence for the intimate relation between critical temperature and scattering rate, a key ingredient in modern theories on high-temperature superconductivity.
European Research Council
European Commission
Agence Natonale de la Recherche (France)
Comunidad de Madrid
Agencia Estatal de Investigación (España)
Ministerio de Ciencia e Innovación (España)
Depto. de Física de Materiales
Fac. de Ciencias Físicas
TRUE
pub
2024-07-08T17:10:15Z
2024-07-08T17:10:15Z
2024
journal article
AO
https://hdl.handle.net/20.500.14352/105818
0031-9007
10.1103/PhysRevLett.132.066001
1079-7114
eng
info:eu-repo/grantAgreement/EC/H2020/647100/EU
ANR-17- CE30-0018-04
ANR-22-CE30- 00020-01
CA21144
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-118078RB-I00/ES/NUEVAS FUNCIONALIDADES PARA UNA ELECTRONICA DE OXIDOS 2D: MATERIA CUANTICA INDUCIDA POR EFFECTOS DE PROXIMIDAD/
PCI2020-112093
Y2020/NMT-6661
ANR-11-IDEX-0003-02
To2Dox
R. El Hage et al., Disentangling Photodoping, Photoconductivity, and Photosuperconductivity in the Cuprates, Phys. Rev. Lett. 132, 066001 (2024).
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application/pdf
American Physical Society