The unconventional doping in YBa2Cu3O7−x/La0.7Ca0.3MnO3 heterostructures by termination control

Tra, V.T.; Huang, R.; Gao, X.; Chen, Y.-J.; Liu, Y.T.; Kuo, W.C.; Chin, Y.Y.; Lin, H.J.; Chen, J.M.; Lee, J.M.; Lee, J.F.; Shi, P.S.; Jiang, M.G.; Duan, C.G.; Juang, J.Y.; Chen, C.T.; Jeng, H.T.; He, Q.; Chuang, Y.-D.; Lin, J.-Y.; Chu, Y.-H.

doi:10.1063/1.4973996

The unconventional doping in YBa2Cu3O7−x/La0.7Ca0.3MnO3 heterostructures by termination control

Tra, V.T.; Huang, R.; Gao, X.; Chen, Y.-J.; Liu, Y.T.; Kuo, W.C.; Chin, Y.Y.; Lin, H.J.; Chen, J.M.; Lee, J.M.; Lee, J.F.; Shi, P.S.; Jiang, M.G.; Duan, C.G.; Juang, J.Y.; Chen, C.T.; Jeng, H.T.; He, Q.; Chuang, Y.-D.; Lin, J.-Y.; Chu, Y.-H.

Authors

V.T. Tra

R. Huang

X. Gao

Y.-J. Chen

Y.T. Liu

W.C. Kuo

Y.Y. Chin

H.J. Lin

J.M. Chen

J.M. Lee

J.F. Lee

P.S. Shi

M.G. Jiang

C.G. Duan

J.Y. Juang

C.T. Chen

H.T. Jeng

Dr Helen He qing.he@durham.ac.uk
Assistant Professor

Y.-D. Chuang

J.-Y. Lin

Y.-H. Chu

Abstract

In strongly correlated oxides, heterostructures provide a powerful route to manipulate the charge, spin, orbital, and lattice degrees of freedom to create distinctive functionalities. In this work, we have achieved atomically precise interface control in YBa2Cu3O7−x/La0.7Ca0.3MnO3 (YBCO/LCMO) heterostructures and find a hidden effective doping. This mechanism is responsible for higher Tc in the sample with the MnO2-terminated interface than in that with the La0.7Ca0.3O-terminated interface. The MnO2-terminated sample also shows a larger magnetic moment of Mn together with a lower valence state. For more than a decade, the control of Tc in these heterostructures prior to this work has been solely via the variation of YBCO or LCMO thickness. This work hints at an alternative way of exploiting and exploring the interactions between superconductivity and magnetism in this system.

Citation

Tra, V., Huang, R., Gao, X., Chen, Y., Liu, Y., Kuo, W., …Chu, Y. (2017). The unconventional doping in YBa2Cu3O7−x/La0.7Ca0.3MnO3 heterostructures by termination control. Applied Physics Letters, 110(3), Article 032402. https://doi.org/10.1063/1.4973996

Journal Article Type	Article
Acceptance Date	Dec 31, 2016
Online Publication Date	Jan 18, 2017
Publication Date	Jan 18, 2017
Deposit Date	Jul 25, 2017
Publicly Available Date	Jan 18, 2018
Journal	Applied Physics Letters
Print ISSN	0003-6951
Electronic ISSN	1077-3118
Publisher	American Institute of Physics
Peer Reviewed	Peer Reviewed
Volume	110
Issue	3
Article Number	032402
DOI	https://doi.org/10.1063/1.4973996

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Copyright Statement
© 2017 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Tra, V. T., Huang, R., Gao, X., Chen, Y.-J., Liu, Y. T., Kuo, W. C., Chin, Y. Y., Lin, H. J., Chen, J. M., Lee, J. M., Lee, J. F., Shi, P. S., Jiang, M. G., Duan, C. G., Juang, J. Y., Chen, C. T., Jeng, H. T., He, Q., Chuang, Y.-D., Lin, J.-Y. & Chu, Y.-H. (2017). The unconventional doping in YBa2Cu3O7−x/La0.7Ca0.3MnO3 heterostructures by termination control. Applied Physics Letters 110(3): 032402 and may be found at https://doi.org/10.1063/1.4973996.