Two-dimensional superconductivity at (110) LaAlO3/SrTiO3 interfaces
| Autor: | Han, Yin-Long, Shen, Sheng-Chun, You, Jie, Li, Hai-Ou, Luo, Zhong-Zhong, Li, Cheng-Jian, Qu, Guo-Liang, Xiong, Chang-Min, Dou, Rui-Fen, He, Lin, Naugle, Donald G, Guo, Guo-Ping, Nie, Jia-Cai |
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| Rok vydání: | 2014 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Novel low dimensional quantum phenomena are expected at (110) LaAlO3/SrTiO3 (LAO/STO) interfaces after the quasi two dimensional electron gas similar to that of (001) LAO/STO interfaces was found [G. Herranz et al., Sci. Rep. 2, 758 (2012) and A. Annadi et al., Nat. Commun. 4, 1838 (2013)]. Here, two dimensional superconductivity of (110) LAO/STO samples with a superconducting transition temperature of 184 mK is demonstrated based on systematical transport measurements. The two dimensional characteristic of the superconductivity is confirmed by analyzing the Berezinskii-Kosterlitz-Thouless transition. The estimated superconductive thickness is about 18 nm. These features of superconductivity of (110) LAO/STO interfaces are comparable to those of (001) LAO/STO interfaces. This discovery may inspire a new round of upsurge on study of LAO/STO interfaces. Comment: 5 pages, 4 figures |
| Databáze: | arXiv |
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