Direct observation of high-temperature superconductivity in one-unit-cell FeSe films

Wen Hao Zhang, Yi Sun, Jin Song Zhang, Fang Sen Li, Ming Hua Guo, Yan Fei Zhao, Hui Min Zhang, Jun Ping Peng, Ying Xing, Hui Chao Wang, Takeshi Fujita, Akihiko Hirata, Zhi Li, Hao Ding, Chen Jia Tang, Meng Wang, Qing Yan Wang, Ke He, Shuai Hua Ji, Xi ChenJun Feng Wang, Zheng Cai Xia, Liang Li, Ya Yu Wang, Jian Wang, Li Li Wang, Ming Wei Chen, Qi Kun Xue, Xu Cun Ma

研究成果: Article査読

203 被引用数 (Scopus)

抄録

We prepared one-unit-cell (1-UC) thick FeSe films on insulating SrTiO 3 substrates with non-superconducting FeTe protection layers by molecular beam epitaxy for ex situ studies. By direct transport and magnetic measurements, we provide definitive evidence for high temperature superconductivity in the 1-UC FeSe films with an onset TC above 40 K and an extremely large critical current density JC∼1. 7×106 A/cm2 at 2 K, which are much higher than TC∼8 K and JC∼104 A/cm2 for bulk FeSe, respectively. Our work may pave the way to enhancing and tailoring superconductivity by interface engineering.

本文言語English
論文番号017401
ジャーナルChinese Physics Letters
31
1
DOI
出版ステータスPublished - 2014 1
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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