Light-Induced Mott-Insulator-to-Metal Phase Transition in Ultrathin Intermediate-Spin Ferromagnetic Perovskite Ruthenates

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 12 vom: 28. März, Seite e2211612
1. Verfasser:	Liu, Ruxin (VerfasserIn)
Weitere Verfasser:	Si, Liang, Niu, Wei, Zhang, Xu, Chen, Zhongqiang, Zhu, Changzheng, Zhuang, Wenzhuo, Chen, Yongda, Zhou, Liqi, Zhang, Chunchen, Wang, Peng, Song, Fengqi, Tang, Lin, Xu, Yongbing, Zhong, Zhicheng, Zhang, Rong, Wang, Xuefeng
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2023
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article Mott insulators charge transfer ferromagnetism insulator-to-metal transition light illumination ultrathin SrRuO3

Beschreibung
Zusammenfassung:	© 2023 Wiley-VCH GmbH. Light control of emergent quantum phenomena is a widely used external stimulus for quantum materials. Generally, perovskite strontium ruthenate SrRuO3 has an itinerant ferromagnetism with a low-spin state. However, the phase of intermediate-spin (IS) ferromagnetic metallic state has never been seen. Here, by means of UV-light irradiation, a photocarrier-doping-induced Mott-insulator-to-metal phase transition is shown in a few atomic layers of perovskite IS ferromagnetic SrRuO3- δ . This new metastable IS metallic phase can be reversibly regulated due to the convenient photocharge transfer from SrTiO3 substrates to SrRuO3- δ ultrathin films. These dynamical mean-field theory calculations further verify such photoinduced electronic phase transformation, owing to oxygen vacancies and orbital reconstruction. The optical manipulation of charge-transfer finesse is an alternative pathway toward discovering novel metastable phases in strongly correlated systems and facilitates potential light-controlled device applications in optoelectronics and spintronics
Beschreibung:	Date Completed 23.03.2023 Date Revised 23.03.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.202211612