Photogenerated carrier injection to an n-type copper oxide superconductor

Yuji Muraoka, T. Muramatsu, Z. Hiroi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have fabricated an isotype heterostructure made of an n-type superconductor (Sr0.89Nd0.11)CuO2 film and an n-type SrTiO3:Nb substrate by using the pulsed laser deposition technique and measured the current-voltage and photovoltaic properties under ultraviolet (UV) light irradiation. A large photovoltage of 0.8 V, which is positive to the film, is observed. This means that the photogenerated hole carriers in the SrTiO3:Nb substrate are injected to the film. Under UV light irradiation, the superconducting transition of the film slightly shifts to lower temperature. The effect of the photocarrier injection on the superconducting transition temperature is discussed in terms of a proposed energy level diagram of the (Sr0.89Nd0.11)CuO 2/SrTiO3:Nb heterostructure.

Original languageEnglish
Pages (from-to)82-85
Number of pages4
JournalThin Solid Films
Volume486
Issue number1-2
DOIs
Publication statusPublished - Aug 22 2005
Externally publishedYes

Fingerprint

Oxide superconductors
Copper oxides
carrier injection
copper oxides
ultraviolet radiation
Heterojunctions
Irradiation
irradiation
photovoltages
Substrates
Pulsed laser deposition
Electron energy levels
Superconducting materials
Superconducting transition temperature
pulsed laser deposition
energy levels
transition temperature
diagrams
injection
shift

Keywords

  • (Sr,Nd)CuO
  • Heterostructure
  • Photocarrier injection
  • Photovoltage

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

Photogenerated carrier injection to an n-type copper oxide superconductor. / Muraoka, Yuji; Muramatsu, T.; Hiroi, Z.

In: Thin Solid Films, Vol. 486, No. 1-2, 22.08.2005, p. 82-85.

Research output: Contribution to journalArticle

Muraoka, Yuji ; Muramatsu, T. ; Hiroi, Z. / Photogenerated carrier injection to an n-type copper oxide superconductor. In: Thin Solid Films. 2005 ; Vol. 486, No. 1-2. pp. 82-85.
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