6 papers
Dynamics of () Domain Walls in SU(N) Gauge Theories
Sayanjit Banerjee, Sanatan Digal, Sumit Shaw
We study collisions of domain walls in gauge theories using the Polyakov-loop effective potential models. We find that string junctions play a crucial role in the dynamics…
In-plane and out-of-plane magnetic field driven Josephson diode effect in magic-angle twisted four-layer graphene
Marta Perego, Sayan Banerjee, Mohamad Abu El Hija +8
The superconducting diode effect offers a powerful probe into the fundamental symmetries of quantum materials. Recent studies on twisted graphene diodes have predominantly focused…
Probing pairing symmetries through quasiparticle interference in chiral Bloch bands
Sayan Banerjee, Subrata Mandal, Peter P. Orth +1
Recent experiments in van der Waals multi-layer systems have demonstrated that superconductivity can emerge from symmetry-reduced, chiral normal states. We here provide a theory fo…
Anomalous impurity-induced charge modulations in black phosphorus
Byeongin Lee, Junho Bang, Sayan Banerjee +6
We observe anomalous charge modulations induced by ionized indium impurities on the surface of the semiconductor black phosphorus by scanning tunneling microscopy (STM). When the i…
Correlations between superconducting and resistive anisotropies
Sayan Banerjee, Harley D. Scammell, Mathias S. Scheurer
There are multiple possible origins of transport anisotropies in metals and superconductors. For instance, rotational symmetry can be spontaneously broken in the normal state as a…
Dissipation-enhanced non-reciprocal superconductivity: application to multi-valley superconductors
Sayan Banerjee, Mathias S. Scheurer
We here propose and study theoretically a non-equilibrium mechanism for the superconducting diode effect, which applies specifically to the case where time-reversal-symmetry -- a p…