Review of photoresponsive properties at SrTiO3-based heterointerfaces

doi:10.1088/1674-1056/27/11/117804

Abstract

The two-dimensional electron gas at SrTiO₃-based heterointerfaces has received a great deal of attention in recent years owing to their potential for the exploration of emergent physics and the next generation of electronics. One of the most fascinating aspects in this system is that the light, as a powerful external perturbation, can modify its transport properties. Recent studies have reported that SrTiO₃-based heterointerfaces exhibit the persistent photoconductivity and can be tuned by the surface and interface engineering. These researches not only reveal the intrinsic physical mechanisms in the photoresponsive process, but also highlight the ability to be used as a tool for novel all-oxide optical devices. This review mainly contraposes the studies of photoresponse at SrTiO₃-based heterointerfaces.

Keywords: complex oxides LaAlO₃/SrTiO₃ heterointerfaces two-dimensional electron gas persistent photoconductivity (PPC)

Received: 19 July 2018
Revised: 08 September 2018
Accepted manuscript online:

PACS:	78.67.Pt	(Multilayers; superlattices; photonic structures; metamaterials)
	71.27.+a	(Strongly correlated electron systems; heavy fermions)
	73.40.-c	(Electronic transport in interface structures)
	73.50.Pz	(Photoconduction and photovoltaic effects)

Fund:

Project supported by the National Natural Science Foundation of China (Grant Nos. 51572222 and 11604265) and Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University, China (Grant No. CX201836).

Corresponding Authors: Kexin Jin
E-mail: jinkx@nwpu.edu.cn

Cite this article:

Hong Yan(闫虹), Zhaoting Zhang(张兆亭), Shuanhu Wang(王拴虎), Kexin Jin(金克新) Review of photoresponsive properties at SrTiO₃-based heterointerfaces 2018 Chin. Phys. B 27 117804

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Review of photoresponsive properties at SrTiO₃-based heterointerfaces