Competitive helical bands and highly efficient diode effect in F/S/TI/S/F hybrid structures

• Tairzhan Karabassov,
• Irina V. Bobkova,
• Pavel M. Marychev,
• Vasiliy S. Stolyarov,
• Vyacheslav M. Silkin and
• Andrey S. Vasenko

Beilstein J. Nanotechnol. 2026, 17, 15–23, doi:10.3762/bjnano.17.2

• Physics, Moscow State University, Moscow 119992, Russia 10.3762/bjnano.17.2 Abstract The diode effect in superconducting materials has been actively investigated in recent years. Plenty of different devices have been proposed as a platform to observe the superconducting diode effect. In this work, we

• the diode efficiency is due to competing contributions of the two superconducting islands to the supercurrent with single helical bands linked through the topological insulator surface. Keywords: hybrid structures; proximity effect; superconducting diode effect; superconductivity; topological

• superconducting electronics [2][3][4]. So far, the superconducting diode effect has been reported in many different systems, including Josephson junctions [5][6][7][8][9][10][11], junction-free devices [12][13][14][15][16][17], superconducting microbridges [18][19], and other systems [20][21]. There have been