53 citations · 194 across the 16 of their papers we have counts for
16 papers
Anomalous Aharonov-Bohm Interference in the Presence of Edge Reconstruction
Sourav Biswas, Hemanta Kumar Kundu, Rajarshi Bhattacharyya +2
Interferometry is a vital tool for studying fundamental features in the quantum Hall effect (QHE). For instance, Aharonov-Bohm (AB) interference in a quantum Hall interferometer ca…
Electron Pairing of Interfering Interface-Based Edge Modes
Sourav Biswas, Hemanta Kumar Kundu, Vladimir Umansky +1
The remarkable Cooper-like pairing phenomenon in the Aharonov-Bohm interference of a Fabry-Perot interferometer (FPI)operating in the integer quantum Hall regimerem…
Operator correlations in a quenched non-Hermitian Luttinger liquid
Ashutosh Dubey, Sourav Biswas, Arijit Kundu
We study operator correlations of a spinful Luttinger liquid after introducing a non-Hermitian interaction quench, yielding supersonic modes and dominant superconducting correlatio…
Two-channel Kondo problem in coupled interacting helical liquids
Sourav Biswas, Alessandro De Martino, Sumathi Rao +1
We study the two-channel Kondo problem in the context of two interacting helical liquids coupled to a spin- magnetic impurity. We show that the interactions between the tw…
Stability of thermally bistable states and their switching in superconducting weak link
Sourav Biswas, Pankaj Wahi, Anjan Kumar Gupta
Superconducting weak link (WL), acting as a Josephson junction (JJ), is one of the widely used elements in superconductor science and quantum circuits. A hysteretic JJ with robust…
A thermal model with AC Josephson effect for a shunted superconducting weak-link
Sourav Biswas, Anjan Kumar Gupta
Superconducting weak-link (WL), behaving like a Josephson junction (JJ), is fundamental to many superconducting devices such as nanoSQUIDs, single-photon detectors, and bolometers.…
Observation of Fermi liquid phase with broken symmetry in a single crystalline nanorod of PrIrO
Bikash Ghosh, Abhishek Juyal, Sourav Biswas +3
We report experimental evidence of emergent broken symmetry Fermi liquid state in an isolated single crystalline nanorod of . We find clear signature of the onse…
Anyonic interference and braiding phase in a Mach-Zehnder Interferometer
Hemanta Kumar Kundu, Sourav Biswas, Nissim Ofek +2
The fractional quantum Hall states have long been predicted to be a testing ground of fractional (anyonic) exchange statistics. These topological states harbor quasiparticles with…
Does shot noise always provide the quasiparticle charge?
Sourav Biswas, Rajarshi Bhattacharyya, Hemanta Kumar Kundu +5
The fractional charge of quasiparticles is a fundamental feature of quantum Hall effect (QHE) States. The charge has long been measured via shot-noise at moderate temperatures (…
Anomalous Quantum Oscillations in a Heterostructure of Graphene on a Proximate Quantum Spin Liquid
V. Leeb, K. Polyudov, S. Mashhadi +4
The quasi two-dimensional Mott insulator -RuCl is proximate to the sought-after Kitaev quantum spin liquid (QSL). In a layer of -RuCl on graphene the dominant Kitaev…
Chiral Luttinger liquids in graphene tuned by irradiation
Sourav Biswas, Tridev Mishra, Sumathi Rao +1
We show that chiral co-propagating Luttinger liquids can be created and tuned by shining high frequency, circularly polarized light, normal to the layers, with different polarizati…
Elimination of thermal bistability in superconducting weak links by an inductive shunt
Sourav Biswas, Clemens B. Winkelmann, Hervé Courtois +3
The quantum phase-coherent behavior of superconducting weak links (WL) is often quenched in the finite voltage state, due to the heat dissipation and related thermal hysteresis. Th…
Josephson Coupling in the Dissipative State of a Thermally Hysteretic -SQUID
Sourav Biswas, Clemens B. Winkelmann, Hervé Courtois +1
Micron-sized superconducting interference devices (-SQUIDs) based on constrictions optimized for minimizing thermal runaway are shown to exhibit voltage oscillations with applie…
Micron size superconducting quantum interference devices of lead (Pb)
Sagar Paul, Sourav Biswas, Anjan K. Gupta
Micron size superconducting quantum interference devices (-SQUID) of lead (Pb), for probing nano-magnetism, were fabricated and characterized. In order to get continuous Pb film…
Controlling hysteresis in superconducting constrictions with a resistive shunt
Nikhil Kumar, C. B. Winkelmann, Sourav Biswas +2
We demonstrate control of the thermal hysteresis in superconducting constrictions by adding a resistive shunt. In order to prevent thermal relaxation oscillations, the shunt resist…
Temperature and phase dynamics in superconducting weak-link
Anjan K. Gupta, Nikhil Kumar, Sourav Biswas
A time dependent thermal model for a superconducting constriction based weak-link (WL) is discussed for investigating the deterministic dynamics of its temperature and phase. A new…