Superconducting gap induced barrier enhancement in a BiFeO3 -based heterostructure

C. L. Lu; Y. Wang; L. You; X. Zhou; H. Y. Peng; G. Z. Xing; E. E.M. Chia; C. Panagopoulos; L. Chen; J. M. Liu; J. Wang; T. Wu

doi:10.1063/1.3530446

Superconducting gap induced barrier enhancement in a BiFeO₃ -based heterostructure

C. L. Lu, Y. Wang, L. You, X. Zhou, H. Y. Peng, G. Z. Xing, E. E.M. Chia, C. Panagopoulos, L. Chen, J. M. Liu, J. Wang^*, T. Wu

^*Corresponding author for this work

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

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Abstract

We report the synthesis and characterization of an epitaxial heterostructure composed of multiferroic BiFeO₃ and superconducting YBa₂ Cu₃ O_7-δ thin films grown on (001) SrTiO₃. Both the superconductivity of YBa₂ Cu₃ O_7-δ and the ferroelectricity of BiFeO₃ are retained in the heterostructure. Current density-electric field characteristics measured from 30 to 170 K suggest a Schottky-emission-like transport at the BiFeO ₃ / YBa₂ Cu₃ O_7-δ interface. Furthermore, the temperature dependence of the barrier height shows an anomalous enhancement at T_C, indicating an intimate coupling between the multiferroic and the superconducting layers.

Original language	English (US)
Article number	252905
Journal	Applied Physics Letters
Volume	97
Issue number	25
DOIs	https://doi.org/10.1063/1.3530446
State	Published - Dec 20 2010
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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@article{8c1d0588a28e439988c8d77e29c0515e,

title = "Superconducting gap induced barrier enhancement in a BiFeO3 -based heterostructure",

abstract = "We report the synthesis and characterization of an epitaxial heterostructure composed of multiferroic BiFeO3 and superconducting YBa2 Cu3 O7-δ thin films grown on (001) SrTiO3. Both the superconductivity of YBa2 Cu3 O7-δ and the ferroelectricity of BiFeO3 are retained in the heterostructure. Current density-electric field characteristics measured from 30 to 170 K suggest a Schottky-emission-like transport at the BiFeO 3 / YBa2 Cu3 O7-δ interface. Furthermore, the temperature dependence of the barrier height shows an anomalous enhancement at TC, indicating an intimate coupling between the multiferroic and the superconducting layers.",

author = "Lu, {C. L.} and Y. Wang and L. You and X. Zhou and Peng, {H. Y.} and Xing, {G. Z.} and Chia, {E. E.M.} and C. Panagopoulos and L. Chen and Liu, {J. M.} and J. Wang and T. Wu",

note = "Funding Information: This work was supported by the Singapore National Research Foundation and the Ministry of Education of Singapore (Grant Nos. AcRF RG30/06, ARC 23/08, and ARC 16/08). J.-M. Liu was supported by NSFC (Grant Nos. 50832002 and 10874085).",

year = "2010",

month = dec,

day = "20",

doi = "10.1063/1.3530446",

language = "English (US)",

volume = "97",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "AMER INST PHYSICS",

number = "25",

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TY - JOUR

T1 - Superconducting gap induced barrier enhancement in a BiFeO3 -based heterostructure

AU - Lu, C. L.

AU - Wang, Y.

AU - You, L.

AU - Zhou, X.

AU - Peng, H. Y.

AU - Xing, G. Z.

AU - Chia, E. E.M.

AU - Panagopoulos, C.

AU - Chen, L.

AU - Liu, J. M.

AU - Wang, J.

AU - Wu, T.

N1 - Funding Information: This work was supported by the Singapore National Research Foundation and the Ministry of Education of Singapore (Grant Nos. AcRF RG30/06, ARC 23/08, and ARC 16/08). J.-M. Liu was supported by NSFC (Grant Nos. 50832002 and 10874085).

PY - 2010/12/20

Y1 - 2010/12/20

N2 - We report the synthesis and characterization of an epitaxial heterostructure composed of multiferroic BiFeO3 and superconducting YBa2 Cu3 O7-δ thin films grown on (001) SrTiO3. Both the superconductivity of YBa2 Cu3 O7-δ and the ferroelectricity of BiFeO3 are retained in the heterostructure. Current density-electric field characteristics measured from 30 to 170 K suggest a Schottky-emission-like transport at the BiFeO 3 / YBa2 Cu3 O7-δ interface. Furthermore, the temperature dependence of the barrier height shows an anomalous enhancement at TC, indicating an intimate coupling between the multiferroic and the superconducting layers.

AB - We report the synthesis and characterization of an epitaxial heterostructure composed of multiferroic BiFeO3 and superconducting YBa2 Cu3 O7-δ thin films grown on (001) SrTiO3. Both the superconductivity of YBa2 Cu3 O7-δ and the ferroelectricity of BiFeO3 are retained in the heterostructure. Current density-electric field characteristics measured from 30 to 170 K suggest a Schottky-emission-like transport at the BiFeO 3 / YBa2 Cu3 O7-δ interface. Furthermore, the temperature dependence of the barrier height shows an anomalous enhancement at TC, indicating an intimate coupling between the multiferroic and the superconducting layers.

UR - http://www.scopus.com/inward/record.url?scp=78650741854&partnerID=8YFLogxK

U2 - 10.1063/1.3530446

DO - 10.1063/1.3530446

M3 - Article

AN - SCOPUS:78650741854

SN - 0003-6951

VL - 97

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 25

M1 - 252905

ER -

Superconducting gap induced barrier enhancement in a BiFeO₃ -based heterostructure

Abstract

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