Anisotropic superconductivity induced by periodic multiferroic domain patterns

Yen Lin Huang, Bo Chao Huang, Yan Ting Wang, Fei Xue, Jheng Cyuan Lin, Heng Jui Liu, Rong Huang, Jiunn Yuan Lin, Chia Seng Chang, Long Qing Chen, Ya Ping Chiu, Ying Hao Chu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The competition between order parameters, such as ferroelectricity, ferromagnetism, and superconductivity, is one of the most fascinating topics in condensed matter physics. Here, we report intriguing anisotropic superconductivity in YBa2Cu3O7 − x films induced by a multiferroic, BiFeO3, with periodic domain patterns. The anisotropic superconductivity was investigated by transport measurements and supported by phase-field simulations, and then the detailed local electronic structures were revealed by cross-sectional scanning tunneling microscopy. We found that the oxygen redistribution in YBa2Cu3O7 − x modulated by the ferroelectric polarization in BiFeO3 was the key mechanism driving this anisotropic superconductivity. The presented heteroarchitecture of a high-temperature superconductor and a domain-engineered multiferroic provides a new approach to tune superconductivity and offers potential advantages for the design of future multifunctional devices.

Original languageEnglish
Article number73
Number of pages8
JournalNPG Asia Materials
Volume11
Issue number1
DOIs
StatePublished - 6 Dec 2019

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