Strain, anisotropy and low field magnetoresistance effect in ultrathin manganite films

H. S. Wang, Qi Li

Research output: Contribution to journalArticle

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Abstract

We report low-field magnetoresistance (LFMR) of strained ultrathin Pr0.67Sr0 33MnO3 (PSMO) films. We observed very large LFMR, a factor of 7 of resistance change in zero-field-cooled sample at 80 K and 2000 Oe, in ultrathin PSMO films on LaAlO3 (LAO) (100). Samples with compressive (on (LAO), tensile (on SrTiO3 (100)) and very small strain (on NdGaO3 (110)) have been studied systematically and remarkable differences were observed. We also observed large LFMR anisotropy between magnetic fields applied parallel and perpendicular to the film surface. Our results demonstrated that strain and strain-induced spin scattering can result in large LFMR effect.

Original languageEnglish (US)
Pages (from-to)3372-3375
Number of pages4
JournalInternational Journal of Modern Physics B
Volume12
Issue number29-31
StatePublished - Dec 20 1998

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anisotropy
scattering
magnetic fields

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

Cite this

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title = "Strain, anisotropy and low field magnetoresistance effect in ultrathin manganite films",
abstract = "We report low-field magnetoresistance (LFMR) of strained ultrathin Pr0.67Sr0 33MnO3 (PSMO) films. We observed very large LFMR, a factor of 7 of resistance change in zero-field-cooled sample at 80 K and 2000 Oe, in ultrathin PSMO films on LaAlO3 (LAO) (100). Samples with compressive (on (LAO), tensile (on SrTiO3 (100)) and very small strain (on NdGaO3 (110)) have been studied systematically and remarkable differences were observed. We also observed large LFMR anisotropy between magnetic fields applied parallel and perpendicular to the film surface. Our results demonstrated that strain and strain-induced spin scattering can result in large LFMR effect.",
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Strain, anisotropy and low field magnetoresistance effect in ultrathin manganite films. / Wang, H. S.; Li, Qi.

In: International Journal of Modern Physics B, Vol. 12, No. 29-31, 20.12.1998, p. 3372-3375.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Strain, anisotropy and low field magnetoresistance effect in ultrathin manganite films

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AU - Li, Qi

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N2 - We report low-field magnetoresistance (LFMR) of strained ultrathin Pr0.67Sr0 33MnO3 (PSMO) films. We observed very large LFMR, a factor of 7 of resistance change in zero-field-cooled sample at 80 K and 2000 Oe, in ultrathin PSMO films on LaAlO3 (LAO) (100). Samples with compressive (on (LAO), tensile (on SrTiO3 (100)) and very small strain (on NdGaO3 (110)) have been studied systematically and remarkable differences were observed. We also observed large LFMR anisotropy between magnetic fields applied parallel and perpendicular to the film surface. Our results demonstrated that strain and strain-induced spin scattering can result in large LFMR effect.

AB - We report low-field magnetoresistance (LFMR) of strained ultrathin Pr0.67Sr0 33MnO3 (PSMO) films. We observed very large LFMR, a factor of 7 of resistance change in zero-field-cooled sample at 80 K and 2000 Oe, in ultrathin PSMO films on LaAlO3 (LAO) (100). Samples with compressive (on (LAO), tensile (on SrTiO3 (100)) and very small strain (on NdGaO3 (110)) have been studied systematically and remarkable differences were observed. We also observed large LFMR anisotropy between magnetic fields applied parallel and perpendicular to the film surface. Our results demonstrated that strain and strain-induced spin scattering can result in large LFMR effect.

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