Low-frequency broadband NMR on UPt3 using DC SQUIDs

Authors
Li, JY Digby, M Casey, A Lusher, C Cowan, B Saunders, J Drung, D Schurig, T Kycia, JB Hong, JI Seidman, DN Halperin, WP
Citation
Jy. Li et al., Low-frequency broadband NMR on UPt3 using DC SQUIDs, PHYSICA B, 284, 2000, pp. 2107-2108
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
284
Year of publication
2000
Part
2
Pages
2107 - 2108
Database
ISI
SICI code
0921-4526(200007)284:<2107:LBNOUU>2.0.ZU;2-H
Abstract
An NMR spectrometer has been constructed based on a DC SQUID with additiona l positive feedback, operating in flux locked loop mode, The system has an overall bandwidth of 3MHz and a coupled energy sensitivity of 800h. The spe ctrometer is being used to study high-quality single-crystal samples of UPt 3, in order to investigate the superconducting order parameter. NMR signals have been observed in the superconducting mixed state at significantly low er frequencies than hitherto, down to 100 kHz. (C) 2000 Published by Elsevi er Science B.V. All rights reserved.