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Abundant photoelectronic behaviors of La0.67Sr0.33MnO3/Nb:SrTiO3 junctions

  • Hai Lin Huang
  • , Deng Jing Wang*
  • , Hong Rui Zhang
  • , Hui Zhang
  • , Chang Min Xiong
  • , Ji Rong Sun
  • , Bao Gen Shen
  • *Corresponding author for this work
  • Wuhan University of Science and Technology
  • CAS - Institute of Physics
  • Beijing Normal University

Research output: Contribution to journalArticlepeer-review

Abstract

Temperature dependence on rectifying and photoelectronic properties of La0.67Sr0.33MnO3/Nb:SrTiO3 (LSMO/STON) junctions with the thickness values of LSMO film varying from 1 nm to 54 nm are systematically studied. As shown experimentally, the junctions exhibit good rectifying properties. The significant differences in photoemission property among the LSMO/STON junctions are observed. For the junction in a thicker LSMO film, the photocurrent shows a monotonic growth when temperature decreases from 300 K to 13 K. While for the junction in an ultrathin LSMO film, the behaviors of photocurrent are more complicated. The photocurrent increases rapidly to a maximum and then smoothly decreases with the decrease of temperature. The unusual phenomenon can be elucidated by the diffusion and recombination model of the photocarrier.

Original languageEnglish
Article number077302
JournalChinese Physics B
Volume26
Issue number7
DOIs
StatePublished - Jun 2017
Externally publishedYes

Keywords

  • Heterojunction
  • Manganite
  • Photocurrent

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