Review of photoinduced effect in manganite films and their heterostructures

Abstract

Light-matter interaction plays an important role in the non-equilibrium physics, especially in strongly correlated electron systems with complex phases. Photoinduced effect can cause the variation in the physical properties and produce some emergent phases. As a classical archetype, manganites have received much attention due to their colossal magnetoresistance (CMR) effect and the strong interaction of charge, spin, orbital, and lattice degrees of freedom. In this paper, we give an overview of photoinduced effect in manganites and their heterostructures. In particular, some materials, including ZnO, Si, BiFeO 3 (BFO), titanate-based oxides, and 0.7Pb(Mg 1/3 Nb 2/3 )O 3 -0.3PbTiO 3 (PMN-PT) have been integrated with manganites. Heterostructures composed of these materials display some exciting and intriguing properties. We do hope that this review offers a guiding idea and more meaningful physical phenomena will be discovered in active areas of solid state physics and materials science.

Electromagnetic wave absorption properties of Ba(CoTi) x Fe12–2x O19@BiFeO3 in hundreds of megahertz band

“…[2] Various EM wave absorption materials with excellent properties have been developed to eliminate the adverse effects of excessive EM radiation on human life. [3][4][5][6] These materials include dielectric materials [7][8][9][10][11] such as carbon materials, [12,13] nonmagnetic sulfides, [14] conjugated polymers [15] and magnetic materials such as ferrites, [16][17][18][19] magnetic metals, [20][21][22] and rare earth alloys. [23,24] However, most studies have mainly focused on EM wave absorption materials in the gigahertz range, whereas studies on absorption materials working in the hundreds of megahertz range are relatively rare.…”

Current-dependent positive magnetoresistance in La0.8Ba0.2MnO3 ultrathin films*

“…In recent decades, the colossal magnetoresistive (CMR) effect in perovskite manganites has attracted extensive attention because of its potential application in magnetic recording and sensors. [1][2][3] It has also been widely recognized that the double-exchange interaction between Mn 3+/4+ ions is a key mechanism that is responsible for the significant decrease of the electrical resistance under a magnetic field at temperatures around the magnetic phase transition. [4] However, in manganites, a positive magnetoresistive (PMR) effect, i.e., a magnetic-field-induced increase of resistance, has not been reported as frequently as colossal magnetoresistance.…”

Revealing the Photocharge-Transfer Mechanism at Manganite-Buffered LaAlO3/SrTiO3 Interfaces by Giant Photoresponse

“…We propose the use of light because it is not only a powerful external stimulant but can also induce remarkable properties. For instance, it has manipulated the electrical transport properties and detected some hidden phases of complex oxides. − In particular, Tebano et al observed a giant persistent photoconductivity at LAO/STO interfaces and opened a way toward potential applications . Also, the photoinduced phenomenon such as the suppression of Kondo effect, an insulator–metal transition, , and charge ordering at interfaces came into light later .…”