207 citations · 909 across the 31 of their papers we have counts for
11 papers · 1 filter
Superfluid response of an atomically thin, gate-tuned van der Waals superconductor
Alexander Jarjour, G. M. Ferguson, Brian T. Schaefer +4
A growing number of two-dimensional superconductors are being discovered in the family of layered van der Waals (vdW) materials. Due to small sample volume, their characterization…
Superconductor-Insulator Transition and Fermi-Bose Crossovers
Yen Lee Loh, Mohit Randeria, Nandini Trivedi +2
The direct transition from an insulator to a superconductor (SC) in Fermi systems is a problem of long-standing interest, which necessarily goes beyond the standard BCS paradigm of…
Dynamical Conductivity Across The Disorder-Tuned Superconductor-Insulator Transition
Mason Swanson, Yen Lee Loh, Mohit Randeria +1
A quantum phase transition is a dramatic event marked by large spatial and temporal fluctuations, where one phase of matter with its ground state and tower of excitations reorganiz…
Aspects of Localization across the 2D Superconductor-Insulator Transition
Nandini Trivedi, Yen Lee Loh, Karim Bouadim +1
It is well known that the metal-insulator transition in two dimensions for non-interacting fermions takes place at infinitesimal disorder. In contrast, the superconductor-to-insula…
Theoretical Studies of Superconductor-Insulator Transitions
Yen Lee Loh, Nandini Trivedi
In this article we study superconductor-insulator transitions within the general framework of an attractive Hubbard model. This is a well-defined model of s-wave superconductivity…
Emergent granularity and pseudogap near the superconductor-insulator transition
Nandini Trivedi, Yen Lee Loh, Karim Bouadim +1
In two dimensions there is a direct superconductor-to-insulator quantum phase transition driven by increasing disorder. We elucidate, using a combination of inhomogeneous mean fiel…
Divergence of Dynamical Conductivity at Certain Percolative Superconductor-Insulator Transitions
Yen Lee Loh, Rajesh Dhakal, John F. Neis +1
Random inductor-capacitor (LC) networks can exhibit percolative superconductor-insulator transitions (SITs). We use a simple and efficient algorithm to compute the dynamical conduc…
Mystery of Excess Low Energy States in a Disordered Superconductor in a Zeeman Field
Y. L. Loh, N. Trivedi, Y. M. Xiong +2
Tunneling density of states measurements of disordered superconducting (SC) Al films in high Zeeman fields reveal a significant population of subgap states which cannot be explaine…
Single and two-particle energy gaps across the disorder-driven superconductor-insulator transition
Karim Bouadim, Yen Lee Loh, Mohit Randeria +1
The competition between superconductivity and localization raises profound questions in condensed matter physics. In spite of decades of research, the mechanism of the superconduct…
Using Inhomogeneity to Raise Superconducting Critical Temperatures
Y. L. Loh, E. W. Carlson
Superconductors with low superfluid density can be described by XY models. In such models the scale of the transition temperature T_c is largely set by the zero temperature phase s…
Effect of Spin Fluctuations on Phonon-Mediated Superconductivity in the Vicinity of a Quantum Critical Point
Y. L. Loh, P. B. Littlewood
We consider an s-wave superconductor in the vicinity of a second-order ferromagnetic (FM) or spin-density-wave (SDW) quantum critical point (QCP), where the superconductivity and m…