130 citations · 478 across the 13 of their papers we have counts for
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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…
Study of Vortex Dynamics and Phase Transitions in Superconducting Thin Films
Indranil Roy
The work reported in my doctoral thesis is an experimental study of vortex dynamics and phase transitions in thin films of type II superconductors using scanning tunneling spectros…
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…
Robust pseudogap across the magnetic field driven superconductor to insulator-like transition in strongly disordered NbN films
Indranil Roy, Rini Ganguly, Harkirat Singh +1
We investigate the magnetic field evolution of the superconducting state in a strongly disordered NbN thin film which exhibits a magnetic field tuned superconductor to insulator-li…
Evidence of quantum vortex fluid in the mixed state of a very weakly pinned a-MoGe thin film
Surajit Dutta, Indranil Roy, Soumyajit Mandal +4
Quantum fluids refer to a class of systems that remain in fluid state down to absolute zero temperature. In this letter, using a combination of magnetotransport and scanning tunnel…
Melting of the vortex lattice through intermediate hexatic fluid in a-MoGe thin film
Indranil Roy, Surajit Dutta, Aditya N. Roy Choudhury +8
The hexatic fluid refers to a phase in between a solid and a liquid which has short range positional order but quasi-long range orientational order. In the celebrated theory of Ber…
Magnetic field induced emergent inhomogeneity in a superconducting film with weak and homogeneous disorder
Rini Ganguly, Indranil Roy, Anurag Banerjee +3
When a magnetic field is applied, the mixed state of a conventional Type II superconductor gets destroyed at the upper critical field Hc2, where the normal vortex cores overlap wit…
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…
Disorder-induced two-step melting of vortex matter in Co-intercalated NbSe single crystals
Somesh Chandra Ganguli, Harkirat Singh, Indranil Roy +4
Disorder induced melting, where the increase in positional entropy created by random pinning sites drives the order-disorder transition in a periodic solid, provides an alternate r…