Determination of magnetic penetration depth from saddle-point field analysis in Tl2Ba2Ca2Cu3O10+'

Y. Q. Song, Moohee Lee, W. P. Halperin, L. M. Tonge, Tobin J Marks

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Tl205 NMR spectra and spin-lattice relaxation in the normal and superconducting states were measured on an aligned sample of Tl2Ba2Ca2Cu3O10+'. The spin-lattice relaxation time, T1, was found to be isotropic and, in the normal state, 1/T1T to be temperature dependent, indicating the presence of spin fluctuations in the thallium-oxygen plane similar to that found in the copper-oxygen plane of YBa2Cu3O7. $ sup 205"Tl NMR spectra at 5 K were studied and the angular dependence of the field shift at the saddle points of the magnetic-field distribution was found to be consistent with the anisotropic London theory. The average penetration depth was inferred to be 7040350. Our approach to determine the penetration depth, the saddle-point field analysis, is insensitive to distortion of the flux lattice associated with pinning. This is in contrast to the more commonly used second-moment method.

Original languageEnglish
Pages (from-to)4945-4951
Number of pages7
JournalPhysical Review B
Volume45
Issue number9
DOIs
Publication statusPublished - 1992

Fingerprint

Spin-lattice relaxation
saddle points
spin-lattice relaxation
penetration
Nuclear magnetic resonance
Oxygen
Spin fluctuations
Thallium
nuclear magnetic resonance
thallium
oxygen
Method of moments
Relaxation time
Copper
relaxation time
Magnetic fields
Fluxes
moments
copper
shift

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Determination of magnetic penetration depth from saddle-point field analysis in Tl2Ba2Ca2Cu3O10+'. / Song, Y. Q.; Lee, Moohee; Halperin, W. P.; Tonge, L. M.; Marks, Tobin J.

In: Physical Review B, Vol. 45, No. 9, 1992, p. 4945-4951.

Research output: Contribution to journalArticle

Song, Y. Q. ; Lee, Moohee ; Halperin, W. P. ; Tonge, L. M. ; Marks, Tobin J. / Determination of magnetic penetration depth from saddle-point field analysis in Tl2Ba2Ca2Cu3O10+'. In: Physical Review B. 1992 ; Vol. 45, No. 9. pp. 4945-4951.
@article{98045c3db5bd4c7195832e91f88f8379,
title = "Determination of magnetic penetration depth from saddle-point field analysis in Tl2Ba2Ca2Cu3O10+'",
abstract = "Tl205 NMR spectra and spin-lattice relaxation in the normal and superconducting states were measured on an aligned sample of Tl2Ba2Ca2Cu3O10+'. The spin-lattice relaxation time, T1, was found to be isotropic and, in the normal state, 1/T1T to be temperature dependent, indicating the presence of spin fluctuations in the thallium-oxygen plane similar to that found in the copper-oxygen plane of YBa2Cu3O7. $ sup 205{"}Tl NMR spectra at 5 K were studied and the angular dependence of the field shift at the saddle points of the magnetic-field distribution was found to be consistent with the anisotropic London theory. The average penetration depth was inferred to be 7040350. Our approach to determine the penetration depth, the saddle-point field analysis, is insensitive to distortion of the flux lattice associated with pinning. This is in contrast to the more commonly used second-moment method.",
author = "Song, {Y. Q.} and Moohee Lee and Halperin, {W. P.} and Tonge, {L. M.} and Marks, {Tobin J}",
year = "1992",
doi = "10.1103/PhysRevB.45.4945",
language = "English",
volume = "45",
pages = "4945--4951",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "9",

}

TY - JOUR

T1 - Determination of magnetic penetration depth from saddle-point field analysis in Tl2Ba2Ca2Cu3O10+'

AU - Song, Y. Q.

AU - Lee, Moohee

AU - Halperin, W. P.

AU - Tonge, L. M.

AU - Marks, Tobin J

PY - 1992

Y1 - 1992

N2 - Tl205 NMR spectra and spin-lattice relaxation in the normal and superconducting states were measured on an aligned sample of Tl2Ba2Ca2Cu3O10+'. The spin-lattice relaxation time, T1, was found to be isotropic and, in the normal state, 1/T1T to be temperature dependent, indicating the presence of spin fluctuations in the thallium-oxygen plane similar to that found in the copper-oxygen plane of YBa2Cu3O7. $ sup 205"Tl NMR spectra at 5 K were studied and the angular dependence of the field shift at the saddle points of the magnetic-field distribution was found to be consistent with the anisotropic London theory. The average penetration depth was inferred to be 7040350. Our approach to determine the penetration depth, the saddle-point field analysis, is insensitive to distortion of the flux lattice associated with pinning. This is in contrast to the more commonly used second-moment method.

AB - Tl205 NMR spectra and spin-lattice relaxation in the normal and superconducting states were measured on an aligned sample of Tl2Ba2Ca2Cu3O10+'. The spin-lattice relaxation time, T1, was found to be isotropic and, in the normal state, 1/T1T to be temperature dependent, indicating the presence of spin fluctuations in the thallium-oxygen plane similar to that found in the copper-oxygen plane of YBa2Cu3O7. $ sup 205"Tl NMR spectra at 5 K were studied and the angular dependence of the field shift at the saddle points of the magnetic-field distribution was found to be consistent with the anisotropic London theory. The average penetration depth was inferred to be 7040350. Our approach to determine the penetration depth, the saddle-point field analysis, is insensitive to distortion of the flux lattice associated with pinning. This is in contrast to the more commonly used second-moment method.

UR - http://www.scopus.com/inward/record.url?scp=24444454825&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=24444454825&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.45.4945

DO - 10.1103/PhysRevB.45.4945

M3 - Article

VL - 45

SP - 4945

EP - 4951

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 9

ER -