Effect of pressure on the magnetoresistance of single crystal Nd{sub 0.5}Sr{sub 0.36}Pb{sub 0.14}MnO{sub 3{minus}{delta}}

Journal Article · Mon Jan 01 00:00:00 EST 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.295· OSTI ID:277390

Khazeni, K; Jia, Y X; Lu, L; Crespi, V H; Cohen, M L; Zettl, A ^[1]

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1. Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300 (United States)

To investigate the observed huge variations in magnetoresistance between different samples of manganite perovskites we have performed the first high-pressure measurement of magnetoresistance in single crystal Nd{sub 0.5}Sr{sub 0.36}Pb{sub 0.14}MnO{sub 3{minus}{delta}}. Both resistivity and magnetoresistance are strongly suppressed upon application of pressure. The decrease in magnetoresistance with increasing pressure rules out substrate-induced compressive strain as a source of enhanced magnetoresistance. Instead, the magnetoresistance differences between samples are ascribed primarily to the more abrupt nature of the semiconductorlike to metallic phase transition at lower temperatures. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 277390
• Journal Information: Physical Review Letters, Vol. 76, Issue 2; Other Information: PBD: Jan 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
LEAD COMPOUNDS
MAGNETORESISTANCE
MANGANESE OXIDES
NEODYMIUM COMPOUNDS
STRONTIUM COMPOUNDS
PRESSURE DEPENDENCE
MONOCRYSTALS
TEMPERATURE DEPENDENCE