4.7 Article

Model investigation of high-temperature superconductor/colossal manganite interfaces

期刊

RESULTS IN PHYSICS
卷 39, 期 -, 页码 -

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ELSEVIER
DOI: 10.1016/j.rinp.2022.105752

关键词

Interface of superconductor and ferromagnet; Charge transfer; Model simulation

资金

  1. Ministry of Science and Technology, Taiwan [MOST 110-2112-M-390-002]

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Unexpected magnetic properties are observed at the heterostructure interface between a high-temperature superconductor and a colossal magnet, with copper moments appearing at the interface and evidence of charge transfer. A theoretical model is proposed to simulate the interface, revealing that the odd copper moment coexists with the ferromagnetic moment of the colossal magnet and that charge transfer significantly affects superconducting and ferromagnetic order.
A heterostructure interface between a high-temperature superconductor and a colossal magnet shows unexpected magnetic properties from experimental measurements. Namely, the copper moments appear in the interfaces. Further evidence has proven that the charge transfer occurs between the interface. To understand how the odd magnetic copper moment is induced and how the charge transfer dominates the magnetic orders in the interface, we propose a theoretical model to simulate the interface. Our calculation results confirm that the odd copper moment only coexists with the ferromagnetic moment of the colossal magnet. We also demonstrate that charge transfer between interfaces significantly affects superconducting and ferromagnetic order.

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