Published September 2010 | Version v1
Journal article Metadata-only

Modulation of Insulator-Metal Transition Temperature by Visible Light in La7/8Sr1/8MnO3 Thin Film

Creators

  • 1. Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China)

Description

Effects of magnetic field and light illumination on the electrical transport properties of La7/8Sr1/8MnO3 thin film grown on a Si substrate are investigated. The film shows an insulator-metal transition at TP ≈ 191.9 K and a low-temperature resistance minimum at Tmin ≈ 48 K in darkness. Both magnetic field and light illumination shift the insulator-metal transition temperature T P to be higher, while the low-temperature transport properties of the film induced by them show different trends. That is, the magnetic field and light illumination make the Tmin shift to lower and higher temperatures, respectively. The enhancement of both TP and Tmin under light illumination could be explained in terms of photoinduced hole-doping and demagnetization effects of La7/8Sr1/8MnO3

Availability note (English)

Available from http://dx.doi.org/10.1088/0256-307X/27/9/097504

Additional details

Identifiers

DOI
10.1088/0256-307X/27/9/097504;

Publishing Information

Journal Title
Chinese Physics Letters
Journal Volume
27
Journal Issue
9
Journal Page Range
[4 p.]
ISSN
0256-307X
CODEN
CPLEEU

INIS

Country of Publication
China
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45003175
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
DEMAGNETIZATION; ELECTRIC CONDUCTIVITY; HOLES; ILLUMINANCE; LANTHANUM COMPOUNDS; MAGNETIC FIELDS; MANGANATES; MODULATION; PHASE TRANSFORMATIONS; STRONTIUM COMPOUNDS; SUBSTRATES; TEMPERATURE DEPENDENCE; THIN FILMS; TRANSITION TEMPERATURE; VISIBLE RADIATION
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ELECTRICAL PROPERTIES; ELECTROMAGNETIC RADIATION; FILMS; MANGANESE COMPOUNDS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RADIATIONS; RARE EARTH COMPOUNDS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS