Time-reversal symmetry breaking superconductivity between twisted cuprate superconductors
Time-reversal symmetry breaking superconductivity between twisted cuprate superconductors
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时间反演对称性打破扭曲铜酸盐超导体之间的超导性
DOI:
10.1126/science.abl8371
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发表时间:
2023
期刊:
影响因子:
56.9
通讯作者:
Zhong, Ruidan
中科院分区:
文献类型:
--
作者:
Zhao, S. Y.;Cui, Xiaomeng;Volkov, Pavel A.;Yoo, Hyobin;Lee, Sangmin;Gardener, Jules A.;Akey, Austin J.;Engelke, Rebecca;Ronen, Yuval;Zhong, Ruidan
Twisted interfaces between stacked van der Waals (vdW) cuprate crystals present a platform for engineering superconducting order parameters by adjusting stacking angles. Using a cryogenic assembly technique, we construct twisted vdW Josephson junctions (JJs) at atomically sharp interfaces between Bi2Sr2CaCu2O8+xcrystals, with quality approaching the limit set by intrinsic JJs. Near 45° twist angle, we observe fractional Shapiro steps and Fraunhofer patterns, consistent with the existence of two degenerate Josephson ground states related by time-reversal symmetry (TRS). By programming the JJ current bias sequence, we controllably break TRS to place the JJ into either of the two ground states, realizing reversible Josephson diodes without external magnetic fields. Our results open a path to engineering topological devices at higher temperatures.
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DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
M. Fistul;G. Giuliani
通讯作者:
G. Giuliani
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
I. Nevirkovets;J. Evetts;M. Blamire
通讯作者:
M. Blamire
影响因子:
4
作者:
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Hua-bing Wang;Sangtae Kim;S. Urayama;M. Nagao;T. Hatano;S. Arisawa;T. Yamashita;Peiheng Wu
影响因子:
41.2
作者:
Yoo, Hyobin;Engelke, Rebecca;Kim, Philip
通讯作者:
Kim, Philip
DOI:
--
发表时间:
2004
期刊:
Physica C 408-410
影响因子:
--
作者:
Y.Takano;T.Hatano;S.Kawakami;M.Ohmori;S.Ikeda;M.Nagao;K.Inomata;K.S.Ynn;S.Ishii;A.Tanaka;T.Yamashita;M.Tachiki
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M.Tachiki