Glassy vortex dynamics induced by a random array of magnetic particles above a superconductor

Young Sun; M. B. Salamon; K. Garnier; R. S. Averback

doi:10.1103/PhysRevLett.92.097002

Glassy vortex dynamics induced by a random array of magnetic particles above a superconductor

Young Sun, M. B. Salamon, K. Garnier, R. S. Averback

Research output: Contribution to journal › Article › peer-review

Abstract

The effects of a random array of nanoscale magnetic particles on the magnetic relaxation of a Nb thin film were discussed. The nature of vortex dynamics and flux pinning was revealed by the magnetization state of the particles. Logarithmic relaxation, temperature-independent relaxation rate, as well as aging and memory effects appeared when the sample was cooled in a magnetic field. It was found that a glassy state in conventional superconductors could be induced by a random array of spin-aligned magnetic particles.

Original language	English (US)
Article number	097002
Pages (from-to)	097002-1-097002-4
Journal	Physical review letters
Volume	92
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.92.097002
State	Published - Mar 5 2004

ASJC Scopus subject areas

General Physics and Astronomy

Online availability

10.1103/PhysRevLett.92.097002

Library availability

Discover UIUC Full Text

Cite this

@article{c766378b363d4e52942ff5db3de76249,

title = "Glassy vortex dynamics induced by a random array of magnetic particles above a superconductor",

abstract = "The effects of a random array of nanoscale magnetic particles on the magnetic relaxation of a Nb thin film were discussed. The nature of vortex dynamics and flux pinning was revealed by the magnetization state of the particles. Logarithmic relaxation, temperature-independent relaxation rate, as well as aging and memory effects appeared when the sample was cooled in a magnetic field. It was found that a glassy state in conventional superconductors could be induced by a random array of spin-aligned magnetic particles.",

author = "Young Sun and Salamon, {M. B.} and K. Garnier and Averback, {R. S.}",

note = "Funding Information: This work was supported by the National Science Foundation under Grant No. EIA-0121568 and in part by the U.S. Department of Energy, Basic Energy Sciences under Grant No. DEFG02-91-ER45439. Some of the experiments were carried out in the Center for Microanalysis of Materials, University of Illinois, which is partially supported by the U.S. Department of Energy under Grant No. DEFG02-91-ER45439.",

year = "2004",

month = mar,

day = "5",

doi = "10.1103/PhysRevLett.92.097002",

language = "English (US)",

volume = "92",

pages = "097002--1--097002--4",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "9",

}

TY - JOUR

T1 - Glassy vortex dynamics induced by a random array of magnetic particles above a superconductor

AU - Sun, Young

AU - Salamon, M. B.

AU - Garnier, K.

AU - Averback, R. S.

N1 - Funding Information: This work was supported by the National Science Foundation under Grant No. EIA-0121568 and in part by the U.S. Department of Energy, Basic Energy Sciences under Grant No. DEFG02-91-ER45439. Some of the experiments were carried out in the Center for Microanalysis of Materials, University of Illinois, which is partially supported by the U.S. Department of Energy under Grant No. DEFG02-91-ER45439.

PY - 2004/3/5

Y1 - 2004/3/5

N2 - The effects of a random array of nanoscale magnetic particles on the magnetic relaxation of a Nb thin film were discussed. The nature of vortex dynamics and flux pinning was revealed by the magnetization state of the particles. Logarithmic relaxation, temperature-independent relaxation rate, as well as aging and memory effects appeared when the sample was cooled in a magnetic field. It was found that a glassy state in conventional superconductors could be induced by a random array of spin-aligned magnetic particles.

AB - The effects of a random array of nanoscale magnetic particles on the magnetic relaxation of a Nb thin film were discussed. The nature of vortex dynamics and flux pinning was revealed by the magnetization state of the particles. Logarithmic relaxation, temperature-independent relaxation rate, as well as aging and memory effects appeared when the sample was cooled in a magnetic field. It was found that a glassy state in conventional superconductors could be induced by a random array of spin-aligned magnetic particles.

UR - http://www.scopus.com/inward/record.url?scp=2442625287&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2442625287&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.92.097002

DO - 10.1103/PhysRevLett.92.097002

M3 - Article

C2 - 15089501

AN - SCOPUS:2442625287

SN - 0031-9007

VL - 92

SP - 097002-1-097002-4

JO - Physical review letters

JF - Physical review letters

IS - 9

M1 - 097002

ER -

Glassy vortex dynamics induced by a random array of magnetic particles above a superconductor

Abstract

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this