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Vortex telegraph noise in high magnetic fields

Shung, E. and Rosenbaum, T. F. and Coppersmith, S. N. and Crabtree, G. W. and Kwok, W. (1997) Vortex telegraph noise in high magnetic fields. Physical Review B, 56 (18). R11431-R11434. ISSN 1098-0121. doi:10.1103/PhysRevB.56.R11431.

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We cool untwinned single crystals of YBa_2Cu_3O_(7-δ) with columnar defects down to liquid-He temperatures and study the development of pinning in the strongly interacting Bose glass with local Hall-probe magnetometry. We are able to resolve discrete fluctuations in the local vortex density resulting from reconfigurations of the vortex assembly between metastable states nearby in energy. By varying the applied magnetic field, and therefore the mean vortex density, we gain microscopic information about vortex-vortex interactions.

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Additional Information:© 1997 The American Physical Society. Received 22 August 1997. We are grateful to A. Abrikosov, H. Jaeger, A. Koshelev, E. Nowak, M. Tarlie, and V. Vinokur for illuminating discussions. This work was supported by the National Science Foundation (Grant No. DMR91-20000) through the Science and Technology Center for Superconductivity. G.W.C. and W.K. acknowledge support from the U.S. Department of Energy, Basic Energy Sciences-Materials Science under Contract No. W-31-109-ENG-38.
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Department of Energy (DOE)W-31-109-ENG-38
Issue or Number:18
Record Number:CaltechAUTHORS:20140707-163032982
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46983
Deposited By: George Porter
Deposited On:09 Jul 2014 20:41
Last Modified:10 Nov 2021 17:32

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