X. S. Ling

Magnetocaloric Studies of the Peak Effect in Nb (2006)

Daniilidis, N. D., Dimitrov, I. K., Mitrovic, V. F., Elbaum, C., Ling, X. S.

We report a magnetocaloric study of the peak effect and Bragg glass transition in a Nb single crystal. The thermomagnetic effects due to vortex flow into and out of the sample are measured. The...

Fabrication of solid-state nanopores with single-nanometre precision (2003)

Storm, A.J., Chen, J.H., Ling, X.S., Zandbergen, H.W., Dekker, C.

Single nanometre-sized pores (nanopores) embedded in an insulating membrane are an exciting new class of nanosensors for rapid electrical detection and characterization of biomolecules. Notable...

Fate of the Peak Effect in a Type-II Superconductor: Multicriticality in the Bragg-Glass Transition (2003)

Park, S. R., Choi, S. M., Dender, D. C., Lynn, J. W., Ling, X. S.

We have used small-angle-neutron-scattering (SANS) and ac magnetic susceptibility to investigate the global magnetic field H vs temperature T phase diagram of a single crystal Nb in which a...

Diffusion of Point Defects in Two-Dimensional Colloidal Crystals (2001)

Pertsinidis, Alexandros, Ling, X. S.

We report the first study of the dynamics of point defects, mono and di-vacancies, in a confined 2-D colloidal crystal in real space and time using digital video microscopy. The defects are...

Possible Evidence for A Slush Vortex Phase in the Vicinity of Vortex Glass Transition in YBa$_{2}$Cu$_3$O$_{7-\delta}$ Thin Films (2001)

Wen, H. H., Li, S. L., Chen, G. H., Ling, X. S.

Current-voltage $I-V$ curves have been carefully measured for YBa$_2$Cu$_3$O$_{7-\delta}$ thin films by following different thermal or field annealing procedures. Although all data can be described...

Equilibrium Configurations and Energetics of Point Defects in Two-Dimensional Colloidal Crystals (2001)

Ling, X. S., Pertsinidis, Alexandros

Superheating and Supercooling of Vortex Matter in a Nb Single Crystal: Direct Evidence for a Phase Transition at the Peak Effect from Neutron Diffraction (2001)

Choi, S. M., Dender, D. C., Ling, X. S., Lynn, J. W., McClain, B. A., Park, S. R.

Equilibrium Configurations and Energetics of Point Defects in Two-Dimensional Colloidal Crystals (2000)

Pertsinidis, Alexandros, Ling, X. S.

We demonstrate a novel method of introducing point defects (mono and di-vacancies) in a confined mono-layer colloidal crystal by manipulating individual particles with optical tweezers. Digital video...

Direct Observation of Superheating and Supercooling of Vortex Matter using Neutron Diffraction (2000)

Ling, X. S., Park, S. R., McClain, B. A., Choi, S. M., Dender, D. C., Lynn, J. W.

We report the first observation of a striking history dependence of the structure function of the vortex matter in the peak effect regime in a Nb single crystal by using small angle neutron...

Giant Peak Effect Observed in Ultrapure YBCO Crystal (1999)

Shi, Jing, Ling, X. S., Liang, Ruixing, Bonn, D. A., Hardy, W. N.

A giant peak in the temperature dependence of the screening current is observed in the ac magnetic response of an ultra-pure YBa$_2$Cu$_3$O$_{6.993}$ crystal in a magnetic field. At H = 2.0 T ({\bf...

Equilibrium and Driven Vortex Phases in the Anomalous Peak Effect (1998)

Berger, J. E., Smullin, S. J., Karlin, W. L., Ling, X. S., Prober, D. E.

We report a crucial experimental test of the present models of the peak effect in weakly disordered type-II superconductors. Our results favor the scenario in which the peak effect arises from a...

Nature of Phase Transitions of Superconducting Wire Networks in a Magnetic Field (1995)

Ling, X. S., Higgins, M. J., Tang, Chao, Chaikin, P. M., Bhattacharya, S., Lezec, H. J., ...

We study $I$-$V$ characteristics of periodic square Nb wire networks as a function of temperature in a transverse magnetic field, with a focus on three fillings 2/5, 1/2, and 0.618 that represent...