10 papers
Theory of Spin-splitter Magnetoresistance in Altermagnets
Tim Kokkeler, Vitaly N. Golovach, F. Sebastian Bergeret
We develop a theory of angular-dependent magnetoresistance (ADMR) in metallic altermagnets coupled to ferromagnetic insulators and establish criteria that distinguish them from con…
Controlling magnetic domain walls with supercurrents
Tim Kokkeler, Risto Ojajärvi, F. Sebastian Bergeret +1
Establishing a versatile, fast and reliable magnetic memory technology is a giant bottleneck for cryogenic computing since present-day room-temperature solutions either cease to wo…
Signatures of time-reversal-symmetry breaking in multiband 2H-TaS2 revealed by zero-field Josephson nonreciprocity
Daniel Margineda, David Caldevilla-Asenjo, Yuriy Yerin +7
Superconductors that spontaneously break time-reversal symmetry host complex order parameters and are widely regarded as a hallmark of unconventional superconductivity. Whether suc…
Abrikosov vortices in altermagnetic superconductors
A. A. Mazanik, F. S. Bergeret
We study the penetration of an external magnetic field into a superconductor with collinear -wave altermagnetic order. We demonstrate that instead of circular Abrikosov vortices…
Josephson coupling through a magnetic racetrack
A. A. Mazanik, F. S. Bergeret
We investigate the Josephson coupling between two superconducting electrodes connected by a ferromagnetic racetrack hosting a Bloch-like domain wall (DW). We show that the interpla…
Exploring the conventional and anomalous Josephson effects at arbitrary disorder strength in systems with spin-dependent fields
Maryam Darvishi, F. Sebastián Bergeret, Stefan IliÄ
We present a theory of the Josephson current in superconductor-normal metal-superconductor (SNS) junctions in the presence of generic spin-dependent fields, such as spin-orbit coup…