φ Josephson Junction Induced by Altermagnetism

被引：1
|
作者：
Lu, Bo [1 ]
Maeda, Kazuki [2 ]
Ito, Hiroyuki [2 ]
Yada, Keiji [2 ]
Tanaka, Yukio [2 ]
机构：
[1] Tianjin Univ, Ctr Joint Quantum Studies, Dept Phys, Tianjin Key Lab Low Dimens Mat Phys & Preparing Te, Tianjin 300072, Peoples R China
[2] Nagoya Univ, Dept Appl Phys, Nagoya 4648603, Japan
来源：
PHYSICAL REVIEW LETTERS | 2024年 / 133卷 / 22期
基金：
中国国家自然科学基金;
关键词：
BOUND-STATES;
D O I：
10.1103/PhysRevLett.133.226002
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the Josephson effect in a superconductor-altermagnet-superconductor junction. We find anomalous phenomena, including 0-pi transition and multinodal current-phase relations. Similar to a neither phi = 0 nor +pi with double degeneracy. These properties can be tunable by parameters, e.g., the exchange energy, the orientation of crystal axis, the length, and the chemical doping of the altermagnet. These rich features lead to accessible functionality of superconductor-altermagnet-superconductor junctions.
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页数：6
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