This paper demonstrates the induction of a Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state in Josephson junctions based on the two-dimensional dilute magnetic topological insulator (Hg,Mn)Te. By observing the critical current's dependence on magnetic field and temperature, the authors show multiple re-entrant behaviors assigned to transitions between π-shifted ground states. The enhanced Zeeman effect, controlled by an external magnetic field, facilitates the study of the FFLO state under more accessible experimental conditions.

Pankaj Mandal, Soumi Mondal, Martin P. Stehno, Stefan Ilić, F. Sebastian Bergeret, Teun M. Klapwijk, Charles Gould, Laurens W. Molenkamp