139 citations · 575 across the 22 of their papers we have counts for
14 papers · 1 filter
Infinite-randomness fixed point of the quantum superconductor-metal transitions in amorphous thin films
Nicholas A. Lewellyn, Ilana M. Percher, JJ Nelson +5
The magnetic-field-tuned quantum superconductor-insulator transitions of disordered amorphous indium oxide films are a paradigm in the study of quantum phase transitions, and exhib…
Vortex Variable Range Hopping in a Conventional Superconducting Film
Ilana M. Percher, Irina Volotsenko, Aviad Frydman +2
The behavior of a disordered amorphous thin film of superconducting Indium Oxide has been studied as a function of temperature and magnetic field applied perpendicular to its plane…
Dissipative superconductivity: a universal non-equilibrium state of nanowires
Yu Chen, Yen-Hsiang Lin, Stephen Snyder +2
The ability to carry electric current with zero dissipation is the hallmark of superconductivity. It is this very property which is used in applications from MRI machines to LHC ma…
Indications of an Electronic Phase Transition in 2D YBa2Cu3O7-x Induced by Electrostatic Doping
Xiang Leng, Javier Garcia-Barriocanal, Boyi Yang +2
We successfully tuned an underdoped ultrathin YBa2Cu3O7-x film into the overdoped regime by means of electrostatic doping using an ionic liquid as a dielectric material. This proce…
Electrostatic Control of the Evolution from Superconductor to Insulator in Ultrathin Films of Yttrium Barium Copper Oxide
Xiang Leng, Javier Garcia-Barriocanal, Yeonbae Lee +1
The electrical transport properties of ultrathin YBCO films have been modified using an electric double layer transistor configuration employing an ionic liquid. The films were gro…
Evidence of Spatially Inhomogeous Pairing on the Insulating Side of a Disorder-Tuned Superconductor-Insulator Transition
K. H. Sarwa B. Tan, Kevin A. Parendo, A. M. Goldman
Measurements of transport properties of amorphous insulating indium oxide thin films have been interpreted as evidence of the presence of superconducting islands on the insulating…
Electrostatic- and Parallel Magnetic Field- Tuned Two Dimensional Superconductor-Insulator Transitions
Kevin A. Parendo, K. H. Sarwa B. Tan, A. M. Goldman
The 2D superconductor-insulator transition in disordered ultrathin amorphous bismuth films has been tuned both by electrostatic electron doping using the electric field effect and…
Anomalous Parallel Field Negative Magnetoresistance in Ultrathin Films Near the Superconductor-Insulator Transition
Kevin A. Parendo, L. M. Hernandez, A. Bhattacharya +1
A parallel field negative magnetoresistance has been found in quench-condensed ultrathin films of amorphous bismuth in the immediate vicinity of the thickness-tuned superconductor-…
Low Temperature Metallic State of Ultrathin Films of Bismuth
L. M. Hernandez, Kevin A. Parendo, A. M. Goldman
Measurements of resistance vs. temperature have been carried out on a sequence of quench-condensed ultrathin films of amorphous bismuth (a-Bi). The resistance below about 0.1K was…
Two-Phase Regime in the Magnetic Field-Temperature Phase Diagram of a Type-II Superconductor
L. L. A. Adams, Klaus Halterman, Oriol T. Valls +1
The magnetic field and temperature dependencies of the magnetic moments of superconducting crystals of have been studied. In a constant magnetic field and at temper…
Bottom-loading dilution refrigerator with ultra-high vacuum deposition capability
L. M. Hernandez, A. M. Goldman
A Kelvinox 400 dilution refrigerator with the ability to load samples onto the mixing chamber from the bottom of the cryostat has been combined with an ultrahigh-vacuum (UHV) depos…
Evidence of Collective Charge Behavior in the Insulating State of Ultrathin Films of Superconducting Metals
C. Christiansen, L. M. Hernandez, A. M. Goldman
Nonlinear I-V characteristics have been observed in insulating quench-condensed films which are locally superconducting. We suggest an interpretation in terms of the enhancement of…
Comment on "Is the nonlinear Meissner effect unobservable?"
Anand Bhattacharya, Igor Zutic, Oriol T. Valls +1
In a recent Letter (Phys. Rev. Lett. 81, p.5640 (1998), cond-mat/9808249 v3), it was suggested that nonlocal effects may prevent observation of the nonlinear Meissner effect in YBC…
Angular Dependence of the Nonlinear Transverse Magnetic Moment of YBCO in the Meissner state
Anand Bhattacharya, Igor Zutic, Oriol T. Valls +3
The angular dependence of the nonlinear transverse magnetic moment of untwinned high-quality single crystals of optimally doped YBCO have been studied at a temperature of 2.5K usin…