Low temperature fluctuations of vortices in layered superconductors

Y.-Q. Song; W. P. Halperin; L. Tonge; T. J. Marks; M. Ledvij; V. G. Kogan; L. N. Bulaevskii

doi:10.1103/PhysRevLett.70.3127

← Back to search

Low temperature fluctuations of vortices in layered superconductors

Y.-Q. Song, W. P. Halperin, L. Tonge, T. J. Marks, M. Ledvij, V. G. Kogan, L. N. Bulaevskii

DOI 10.1103/PhysRevLett.70.3127 · Physical Review Letters

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

Data on the Tl205 NMR frequency shift and linewidth due to the magnetic field variation in the mixed state of Tl2Ba2Ca2Cu3O10+δ are presented. These data, which are commonly used to extract the London penetration depth, show a near linear temperature dependence at T≪Tc. We offer an explanation of this effect as being caused by thermal fluctuations of vortices in weakly coupled layered systems. We argue that the fluctuations cannot be ignored in interpretation of NMR and Muon-Spin-resonance data for materials with large penetration depths even at low T.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Tl2Ba2Ca2Cu3O10+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	120	Pressure not reported	onset