Dept Banner
Dept Banner
Chhowalla Group Research
Gold Nanoparticles (acquired by UltraSTEM)
hybrid perovskite single crystals
rubrene OFETs
Professor Shahab Shojaei-Zadeh publishes in Phys Rev Fluids
Fabris Group Research

Looking at Vortices with NMR

Categories: Physics - Condensed Matter (PHYS-CM)
Speaker: Bill Halperin , Northwestern University
Date & Time: November 3, 2009 - 1:30pm
Location: Serin 385

Magnetic resonance has been extensively used to probe vortex structures insuperconductors. At Northwestern University we have used 17O NMR as a probe ofvortices in cuprates: YBCO and BSCCO. From the NMR spectrum we can identify thevortex liquid-to-solid transitions and determine the vortex melting phase diagram. At the National High Magnetic Field Laboratory we extended NMR to magnetic fields up to 42T to study the electronic excitations in the vortex core. The advantage of high fields is toincrease the fraction of probe nuclei in the vortex core. New results from our NMR studies in BSCCO suggest that the vortex cores carry a net charge and might be responsible for a reconstruction of vortex structures owing to a repulsive interaction between vortex pancakes on adjacent planes.

Host:  Haruo Kojima

Contact Us

NR03HamiltonGate 607 Taylor Road
Piscataway, NJ 08854

P   848-445-1388
Email Us