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Observation of a three-dimensional quasi-long-range electronic supermodulation in YBa2Cu3O7-x/La0. 7Ca0. 3MnO3 heterostructures

He, Junfeng; Shafer, Padraic; Mion, Thomas R.; Tra, Vu Thanh; He, Qing; Kong, J.; Chuang, Y.-D.; Yang, W.L.; Graf, M.J.; Lin, J.-Y.; Chu, Y.-H.; Arenholz, E.; He, R.-H.

Observation of a three-dimensional quasi-long-range electronic supermodulation in YBa2Cu3O7-x/La0. 7Ca0. 3MnO3 heterostructures Thumbnail


Authors

Padraic Shafer

Thomas R. Mion

Vu Thanh Tra

J. Kong

Y.-D. Chuang

W.L. Yang

M.J. Graf

J.-Y. Lin

Y.-H. Chu

E. Arenholz



Abstract

Recent developments in high-temperature superconductivity highlight a generic tendency of the cuprates to develop competing electronic (charge) supermodulations. While coupled with the lattice and showing different characteristics in different materials, these supermodulations themselves are generally conceived to be quasi-two-dimensional, residing mainly in individual CuO2 planes, and poorly correlated along the c axis. Here we observed with resonant elastic X-ray scattering a distinct type of electronic supermodulation in YBa2Cu3O7−x (YBCO) thin films grown epitaxially on La0.7Ca0.3MnO3 (LCMO). This supermodulation has a periodicity nearly commensurate with four lattice constants in-plane, eight out of plane, with long correlation lengths in three dimensions. It sets in far above the superconducting transition temperature and competes with superconductivity below this temperature for electronic states predominantly in the CuO2 plane. Our finding sheds light on the nature of charge ordering in cuprates as well as a reported long-range proximity effect between superconductivity and ferromagnetism in YBCO/LCMO heterostructures.

Citation

He, J., Shafer, P., Mion, T. R., Tra, V. T., He, Q., Kong, J., …He, R. (2016). Observation of a three-dimensional quasi-long-range electronic supermodulation in YBa2Cu3O7-x/La0. 7Ca0. 3MnO3 heterostructures. Nature Communications, 7, Article 10852. https://doi.org/10.1038/ncomms10852

Journal Article Type Article
Acceptance Date Jan 27, 2016
Online Publication Date Mar 1, 2016
Publication Date Mar 1, 2016
Deposit Date Dec 5, 2016
Publicly Available Date Dec 9, 2016
Journal Nature Communications
Publisher Nature Research
Peer Reviewed Peer Reviewed
Volume 7
Article Number 10852
DOI https://doi.org/10.1038/ncomms10852

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