217 citations · 3.6k across the 102 of their papers we have counts for
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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…
Non-linear vortex dynamics in the mixed state of superconducting a-MoGe and NbN thin films using low-frequency two-coil mutual inductance technique
Somak Basistha, Soumyajit Mandal, John Jesudasan +2
We use a two-coil mutual inductance technique to investigate the non-linear response of the vortex lattice of two type-II superconducting thin films, namely a very weakly pinned am…
Linear non-saturating magnetoresistance and superconductivity in epitaxial thin films of YbSb
Rudra Dhara, Pritam Das, Sulagna Datta +4
Rare-earth diantimonides display intriguing ground states often associated with structural order, which can be manipulated in thin film geometries. In this study, we report epitaxi…
Inverse melting and re-entrant transformations of the vortex lattice in amorphous Re6Zr thin film
Rishabh Duhan, Subhamita Sengupta, John Jesudasan +2
Melting of a solid is one of the most ubiquitous phenomena observed in nature. Most solids, when heated, melt from a crystalline state to an isotropic liquid at a characteristic te…
Origin of superconductivity in tungsten thin films
Vivas Bagwe, Rishabh Duhan, Bhagyashree Chalke +3
The most common allotrope of tungsten, α-W, has a superconducting transition at a temperature of ~11 mK. However, two other forms of tungsten have been reported to have superconduc…
Nernst Sign-Reversal in the Hexatic Vortex Phase of Weakly Disordered a-MoGe Thin Films
Y. Wu, A. Roy, S. Dutta +3
The hexatic phase is an intermediate stage in the melting process of a 2D crystal due to topological defects. Recently, this exotic phase was experimentally identified in the vorte…
Revealing novel aspects of light-matter coupling in terahertz two-dimensional coherent spectroscopy: the case of the amplitude mode in superconductors
Kota Katsumi, Jacopo Fiore, Mattia Udina +7
Recently developed terahertz (THz) two-dimensional coherent spectroscopy (2DCS) is a powerful technique to obtain materials information in a fashion qualitatively different from ot…
Low frequency electrodynamics in the mixed state of superconducting NbN and a-MoGe films using two-coil mutual inductance technique
Somak Basistha, Soumyajit Mandal, John Jesudasan +2
We investigate the low-frequency electrodynamics in the vortex state of two type-II superconducting films, namely, a moderate-to-strongly pinned Niobium Nitride (NbN) and a very we…
Why shot noise does not generally detect pairing in mesoscopic superconducting tunnel junctions
Jiasen Niu, Koen M. Bastiaans, Jianfeng Ge +10
The shot noise in tunneling experiments reflects the Poissonian nature of the tunneling process. The shot noise power is proportional to both the magnitude of the current and the e…
Structure and dynamics of a pinned vortex liquid in superconducting a-Re_xZr (x ~ 6) thin film
Rishabh Duhan, Subhamita Sengupta, Ruchi Tomar +4
We report the formation of a pinned vortex liquid spanning a very large region of the magnetic field-temperature parameter space in a 5 nm thick amorphous superconducting Re_xZr (x…
Correlated carrier dynamics in a superconducting van der Waals heterostructure
Prakiran Baidya, Vivas Bagwe, Pratap Raychaudhuri +1
The study of Berezinskii-Kosterlitz-Thouless transitions in clean, layered two-dimensional superconductors promises to provide insight into a host of novel phenomena like re-entran…
Study of vortex dynamics in an a-MoGe thin film using low-frequency two-coil mutual inductance measurements
Soumyajit Mandal, Somak Basistha, John Jesudasan +2
We extract the vortex lattice parameters using low-frequency two-coil mutual inductance measurements in a 20-nm-thick superconducting a-MoGe thin film. We fit the temperature depen…
Spin-Polarisation measurement using NbN-Insulator-Ferromagnet Tunnel Junction with oxidized barrier
Pritam Das, John Jesudasan, Rudheer Bapat +1
We report a two-step process for the fabrication of superconductor-insulator-normal metal tunnel junctions using NbN as the superconducting electrode and its surface oxide as the i…
Anomalous high-temperature THz nonlinearity in superconductors near the metal-insulator transition
Dipanjan Chaudhuri, David Barbalas, Ralph Romero +5
The interplay of strong disorder and superconductivity is a topic of long-term interest in condensed matter physics. Here we explore the nonlinear THz response of superconducting N…
Transport signatures of fragile-glass dynamics in the melting of the two-dimensional vortex lattice
Ilaria Maccari, Bal K. Pokharel, Jasminka Terzic +8
In two-dimensional (2D) systems, the melting from a solid to an isotropic liquid can occur via an intermediate phase that retains orientational order. However, in 2D superconductin…
Magnetic field induced transition from a vortex liquid to Bose metal in ultrathin a-MoGe thin film
Surajit Dutta, John Jesudasan, Pratap Raychaudhuri
We identify a magnetic field induced transition from a vortex liquid to Bose metal in a 2-dimensional amorphous superconductor, a-MoGe, using a combination of magnetotransport and…
Transition from three- to two-dimensional Ising superconductivity in few-layer NbSe2 by proximity effect from van der Waals heterostacking
Prakiran Baidya, Divya Sahani, Hemanta Kumar Kundu +7
We report the experimental observation of Ising superconductivity in 3-dimensional NbSe2 stacked with single-layer MoS2. The angular dependence of the upper critical magnetic field…
Evidence of zero point fluctuation of vortices in a very weakly pinned a-MoGe thin film
Surajit Dutta, Indranil Roy, John Jesudasan +2
In a Type II superconductor, the vortex core behaves like a normal metal. Consequently, the single-particle density of states in the vortex core of a conventional Type II supercond…
Superfluid Density in Conventional Superconductors: From Clean to Strongly Disordered
Surajit Dutta, Pratap Raychaudhuri, Sudhansu S. Mandal +1
The highly convergent form of superfluid density in disordered conventional superconductors available in the literature and independently obtained by us following the approach of a…
Superconductivity in amorphous RexZr (x ~ 6) thin films
Surajit Dutta, Vivas Bagwe, Gorakhnath Chaurasiya +4
We report the growth, characterization and superconducting properties of a new amorphous superconductor, RexZr ( x ~ 6 ), in thin film form. Films were grown by pulsed laser deposi…
Universal scaling behaviour near vortex-solid/glass to vortex-fluid transition in type-II superconductors in two- and three-dimensions
Hemanta Kumar Kundu, John Jesudasan, Pratap Raychaudhuri +2
In this article, we present evidence for the existence of vortex-solid/glass (VG) to vortex-fluid (VF) transition in a type-II superconductor (SC), NbN. We probed the VG to VF tran…
Effect of dimensionality on the vortex-dynamics in type-II superconductor
Hemanta Kumar Kundu, Kazi Rafsanjani Amin, John Jesudasan +3
We explore the effects of sample dimensionality on vortex pinning in a type-II, low-, s-wave superconductor, NbN, in the presence of a perpendicular magnetic field, . We fi…
Destruction of superconductivity through phase fluctuations in ultrathin a-MoGe films
Soumyajit Mandal, Surajit Dutta, Somak Basistha +6
We investigate the evolution of superconductivity with decreasing film thickness in ultrathin amorphous MoGe (a-MoGe) films using a combination of sub-Kelvin scanning tunneling spe…
Extreme sensitivity of the vortex state in a-MoGe films to radio-frequency electromagnetic perturbation
Surajit Dutta, Indranil Roy, Soumyajit Mandal +3
Recently, detailed real space imaging using scanning tunneling spectroscopy of the vortex lattice in a weakly pinned a-MoGe thin film revealed that the vortex lattice melts in two…