RT Journal Article
T1 Light-induced decoupling of electronic and magnetic properties in manganites
A1 Navarro, H.
A1 Basaran, Ali C.
A1 Ajejas, F.
A1 Fratino, L.
A1 Bag, S.
A1 Wang, T. D.
A1 Qiu, E.
A1 Rouco Gómez, Víctor
A1 Tenreiro Villar, Isabel
A1 Torres, F.
A1 Rivera Calzada, Alberto Carlos
A1 Santamaría Sánchez-Barriga, Jacobo
A1 Rozenberg, M.
A1 Schuller, Ivan K.
AB The strongly correlated material La_0.7Sr_0.3MnO_3 (LSMO) exhibits metal-to-insulator and magnetic tran-sition near room temperature. Although the physical properties of LSMO can be manipulated by strain, chemical doping, temperature, or magnetic field, they often require large external stimuli. To include addi-tional flexibility and tunability, we developed a hybrid optoelectronic heterostructure that uses photocarrier injection from cadmium sulfide (CdS) to an LSMO layer to change its electrical conductivity. LSMO exhibits no significant optical response; however, the CdS/LSMO heterostructures show an enhanced conductivity, with a resistance drop of about 37%, at the transition temperature under light stimuli. This enhanced conductivity in response to light is comparable to the effect of a 9 T magnetic field in pure LSMO. Surprisingly, the optical and magnetic responses of CdS/LSMO heterostructures are decoupled and exhibit different effects when both stimuli are applied. This unexpected behavior shows that het-erostructuring strongly correlated oxides may require a new understanding of the coupling of physical properties across the transitions and provide the means to implement new functionalities.
PB American Physical Society
YR 2023
FD 2023-04-25
LK https://hdl.handle.net/20.500.14352/88162
UL https://hdl.handle.net/20.500.14352/88162
LA eng
NO © 2023 American Physical SocietyThe synthesis of the heterostructures and measurement of transport, magnetic, and optical properties were supported by the U.S. Department of Energy's Office of Basic Energy Science, under Grant DE-FG02-87ER45332, the synthesis of LSMO by the Spanish MCI through Grants No. MAT 2017-87134-C02 and No. PCI 2020-112093, and theory by the French ANR "MoMA" project ANR-19-CE30-0020, Chilean FONDECYT 1211902, and Basal AFB220001.
NO U.S. Department of Energy's Office of Basic Energy Science
NO Ministerio de Ciencia e Innovación (MICINN)
NO Agence nationale de la recherche (ANR)
NO Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)
DS Docta Complutense
RD 18 dic 2025