Control of the Metal-Insulator Transition at Complex Oxide Heterointerfaces through Visible Light

Jheng-Cyuan Lin; Vu Thanh Tra; Dung-Sheng Tsai; Tai-Te Lin; Po-Cheng Huang; Wei-Lun Hsu; Hui Jun Wu; Rong Huang; Nguyen Van Chien; Ryuji Yoshida; Jiunn-Yuan Lin; Yuichi Ikuhara; Ya-Ping Chiu; Shangjr Gwo; Din Ping Tsai; Jr-Hau He; Ying-Hao Chu

doi:10.1002/adma.201503499

Control of the Metal-Insulator Transition at Complex Oxide Heterointerfaces through Visible Light

Adv Mater. 2016 Jan 27;28(4):764-70. doi: 10.1002/adma.201503499. Epub 2015 Nov 26.

Authors

Jheng-Cyuan Lin¹, Vu Thanh Tra², Dung-Sheng Tsai^{3

4}, Tai-Te Lin⁵, Po-Cheng Huang⁵, Wei-Lun Hsu⁶, Hui Jun Wu⁶, Rong Huang^{7

8}, Nguyen Van Chien⁹, Ryuji Yoshida⁸, Jiunn-Yuan Lin², Yuichi Ikuhara^{8

10}, Ya-Ping Chiu^{5

11}, Shangjr Gwo¹², Din Ping Tsai^{4

6}, Jr-Hau He^{3

13}, Ying-Hao Chu^{1

9}

Affiliations

¹ Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan.
² Institute of Physics, National Chiao Tung University, Hsinchu, 30010, Taiwan.
³ Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, 10617, Taiwan.
⁴ Research Center for Applied Sciences, Academia Sinica, Taipei, 11529, Taiwan.
⁵ Department of Physics, National Sun Yat-sen University, Kaohsiung, 804, Taiwan.
⁶ Department of Physics, National Taiwan University, Taipei, 10617, Taiwan.
⁷ Key Laboratory of Polar Materials and Devices, Ministry of Education, East China Normal University, Shanghai, 200062, China.
⁸ Nanostructures Research Laboratory, Japan Fine Ceramics Center, Nagoya, 456-8587, Japan.
⁹ Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, 30010, Taiwan.
¹⁰ Institute of Engineering Innovation, The University of Tokyo, Tokyo, 113-8656, Japan.
¹¹ Department of Physics, National Taiwan Normal University, Taipei, 116, Taiwan.
¹² Department of Physics, National Tsing-Hua University, Hsinchu, 30013, Taiwan.
¹³ Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.

PMID: 26607052
DOI: 10.1002/adma.201503499

Abstract

The coupling of the localized surface plasmon resonance of Au nanoparticles is utilized to deliver a visible-light stimulus to control conduction at the LaAlO3 /SrTiO3 interface. A giant photoresponse and the controllable metal-insulator transition are characterized at this heterointerface. This study paves a new route to optical control of the functionality at the heterointerfaces.

Keywords: Au nanoparticles; band structures; heterointerfaces; metal-insulator transition; surface plasmon resonance.