260 citations · 2.2k across the 66 of their papers we have counts for
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Probing the pairing symmetry of moiré graphene superconductors
Sayak Biswas, Rajdeep Sensarma, Mohit Randeria
The pairing symmetry of magic-angle moiré graphene is a fundamental question that remains unresolved. Combining experimental and theoretical inputs, we constrain the superconductin…
Exploring unconventional superconductivity in PdTe via Point Contact Spectroscopy
Pritam Das, Sulagna Dutta, Saurav Suman +6
Palladium Telluride (PdTe), a non-layered intermetallic crystalline compound, has captured attention for its unique superconducting properties and strong spin-orbit coupling. In th…
Andreev versus Tunneling Spectroscopy of Unconventional Flat Band Superconductors
Sayak Biswas, Saurav Suman, Mohit Randeria +1
STM experiments in the tunneling and Andreev regimes on graphene-based moire superconductors (SC) show two distinct energy scales whose origin is mysterious. We express the conduct…
Fragile electronic superconductivity in Bi Single crystal
Anil Kumar, Rajendra Loke, Arindam Pramanik +6
It was presumed that semimetal Bismuth (Bi) would not show superconductivity (SC) even at ultra-low temperatures (10 mK) due to its very low carrier density ($\approx 3\times10^…
Subgap two-particle spectral weight in disordered -wave superconductors: Insights from mode coupling approach
Prathyush P. Poduval, Abhisek Samanta, Prashant Gupta +2
We study the two-particle spectral functions and collective modes of weakly disordered superconductors using a disordered attractive Hubbard model on square lattice. We show that t…
Thermal effects on collective modes in disordered -wave superconductors
Abhisek Samanta, Anirban Das, Nandini Trivedi +1
We investigate the effect of thermal fluctuations on the two-particle spectral function for a disordered -wave superconductor in two dimensions, focusing on the evolution of the…
Dynamic transition from Mott-like to metal-like state of the vortex lattice in a superconducting film with a periodic array of holes
Indranil Roy, Prashant Chauhan, Harkirat Singh +6
We show that under an a.c. magnetic field excitation the vortex lattice in a superconductor with periodic array of holes can undergo a transition from a Mott-like state where each…
From immunity to sudden death: Effects of strong disorder in strongly correlated superconductors
Debmalya Chakraborty, Rajdeep Sensarma, Amit Ghosal
We investigate the effect of strong disorder on a system with strong electronic repulsion. In absence of disorder, the system has a d-wave superconducting ground-state with strong…
Gutzwiller-projected wave functions for the pseudogap state of underdoped high-temperature superconductors
Rajdeep Sensarma, Victor Galitski
Recent experiments strongly suggest that a Fermi surface reconstruction and multiple Fermi pockets are important common features of the underdoped high-temperature cuprate supercon…
Breakdown of the Thomas Fermi approximation for polarized Fermi gases
Rajdeep Sensarma, William Schneider, Roberto B. Diener +1
We use Bogoliubov de-Gennes theory to show that the commonly used Thomas-Fermi approximation (TFA) can fail in describing polarized unitary gases in anisotropic harmonic traps. We…
Can one determine the underlying Fermi surface in the superconducting state of strongly correlated superconductors?
Rajdeep Sensarma, Mohit Randeria, Nandini Trivedi
The question of determining the underlying Fermi surface (FS) that is gapped by superconductivity (SC) is of central importance in strongly correlated systems, particularly in view…
Vortices in Superfluid Fermi Gases through the BEC to BCS Crossover
R. Sensarma, M. Randeria, T. L. Ho
We have analyzed a single vortex at T=0 in a 3D superfluid atomic Fermi gas across a Feshbach resonance. On the BCS side, the order parameter varies on two scales: and…