Photogenerated carrier injection to an n-type copper oxide superconductor

Y. Muraoka; T. Muramatsu; Z. Hiroi

doi:10.1016/j.tsf.2004.11.212

Photogenerated carrier injection to an n-type copper oxide superconductor

Y. Muraoka, T. Muramatsu, Z. Hiroi

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We have fabricated an isotype heterostructure made of an n-type superconductor (Sr_0.89Nd_0.11)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 (Sr_0.89Nd_0.11)CuO ₂/SrTiO₃:Nb heterostructure.

Original language	English
Pages (from-to)	82-85
Number of pages	4
Journal	Thin Solid Films
Volume	486
Issue number	1-2
DOIs	https://doi.org/10.1016/j.tsf.2004.11.212
Publication status	Published - Aug 22 2005
Externally published	Yes

Keywords

(Sr,Nd)CuO
Heterostructure
Photocarrier injection
Photovoltage

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.tsf.2004.11.212

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title = "Photogenerated carrier injection to an n-type copper oxide superconductor",

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.",

keywords = "(Sr,Nd)CuO, Heterostructure, Photocarrier injection, Photovoltage",

author = "Y. Muraoka and T. Muramatsu and Z. Hiroi",

note = "Funding Information: The authors thank J. Yamaura for helpful discussion. This work is supported by a Grant-in Aid for Scientific Research (No. 14750549) and a Grant-in-Aid for Creative Scientific Research (IJNP0201) given by the Ministry of Education, Culture, Sports, Science and Technology, Japan.",

year = "2005",

month = aug,

day = "22",

doi = "10.1016/j.tsf.2004.11.212",

language = "English",

volume = "486",

pages = "82--85",

journal = "Thin Solid Films",

issn = "0040-6090",

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number = "1-2",

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T1 - Photogenerated carrier injection to an n-type copper oxide superconductor

AU - Muraoka, Y.

AU - Muramatsu, T.

AU - Hiroi, Z.

N1 - Funding Information: The authors thank J. Yamaura for helpful discussion. This work is supported by a Grant-in Aid for Scientific Research (No. 14750549) and a Grant-in-Aid for Creative Scientific Research (IJNP0201) given by the Ministry of Education, Culture, Sports, Science and Technology, Japan.

PY - 2005/8/22

Y1 - 2005/8/22

N2 - 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.

AB - 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.

KW - (Sr,Nd)CuO

KW - Heterostructure

KW - Photocarrier injection

KW - Photovoltage

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DO - 10.1016/j.tsf.2004.11.212

M3 - Article

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SN - 0040-6090

VL - 486

SP - 82

EP - 85

JO - Thin Solid Films

JF - Thin Solid Films

IS - 1-2

ER -

Photogenerated carrier injection to an n-type copper oxide superconductor

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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