Andreev and Majorana Weyl crossings in multi-terminal Josephson junctions

量子物理学・ナノサイエンス第263回セミナー/トポロジカル物質科学セミナー

概要

We analyze the Andreev spectrum in a four-terminal Josephson junction between conventional and topological superconductors. We find that a topologically protected crossing in the space of three superconducting phase differences can occur between the two Andreev bound states with lower energy. We discuss the possible detection of this crossing through the nonlocal conductance quantization between two voltage-biased terminals.

• 量子物理学・ナノサイエンス第263回セミナー

• 量子物理学・ナノサイエンス先端研究センター 主催
• 東京工業大学理学院・物理学系 共催