Absolute values of the London penetration depth in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">YBa</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>6</m

Pereg-Barnea, T.; Turner, Patrick; Harris, Richard E.; Mullins, G. K.; Bobowski, J. S.; Raudsepp, Mati; Liang, Ruixing; Bonn, D. A.; Hardy, W. N.

doi:10.1103/physrevb.69.184513

Cited by 84 publications

(69 citation statements)

References 39 publications

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“…This of course is a well known result for ordinary systems of springs and masses; what Eq. (50) confirms is that this result remains valid even in the case of interactions with finite range. We thus obtain…”

Section: 46supporting

confidence: 72%

Duality and the vibrational modes of a Cooper-pair Wigner crystal

Pereg-Barnea

Franz

2006

Phys. Rev. B

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When quantum fluctuations in the phase of the superconducting order parameter destroy the offdiagonal long range order, duality arguments predict the formation of a Cooper pair crystal. This effect is thought to be responsible for the static checkerboard patterns observed recently in various underdoped cuprate superconductors by means of scanning tunneling spectroscopy. Breaking of the translational symmetry in such a Cooper pair Wigner crystal may, under certain conditions, lead to the emergence of low lying transverse vibrational modes which could then contribute to thermodynamic and transport properties at low temperatures. We investigate these vibrational modes using a continuum version of the standard vortex-boson duality, calculate the speed of sound in the Cooper pair Wigner crystal and deduce the associated specific heat and thermal conductivity. We then suggest that these modes could be responsible for the mysterious bosonic contribution to the thermal conductivity recently observed in strongly underdoped ultraclean single crystals of YBa2Cu3O6+x tuned across the superconductor-insulator transition.

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Section: 46supporting

confidence: 72%

Duality and the vibrational modes of a Cooper-pair Wigner crystal

Pereg-Barnea

Franz

2006

Phys. Rev. B

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“…Recently, it was shown that zero-field extrapolated values of λ obtained from µSR measurements on the high temperature superconductor YBa 2 Cu 3 O 6+x agree well with values obtained from accurate electron spin resonance measurements in the Meissner phase. 37 We note that the linear extrapolations of the data in Fig. 13 are continuous through the Meissner phase-which occurs in V below H c1 ≈ 0.25H c2 .…”

Section: Magnetic Field Dependences Of λ and ξmentioning

confidence: 67%

Muon spin rotation measurements of the vortex state in vanadium: A comparative analysis using iterative and analytical solutions of the Ginzburg-Landau equations

et al. 2006

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We report muon spin rotation measurements on a single crystal of the marginal type-II superconductor V. The measured internal magnetic field distributions are modeled assuming solutions of the Ginzburg-Landau (GL) equations for an ideal vortex lattice obtained using (i) an iterative procedure developed by E.H. Brandt, Phys. Rev. Lett. 78, 2208Lett. 78, (1997 and (ii) a variational method. Both models yield qualitatively similar results. The magnetic penetration depth λ and the GL coherence length ξ determined from the data analysis exhibit strong field dependences, which are attributed to changes in the electronic structure of the vortex lattice. The zero-field extrapolated values of λ and the GL parameter κ agree well with values obtained by other experimental techniques that probe the Meissner state.

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“…14(b,d,e,f), the theoretical plot is 53 ; (g,h) Ref. 88 . The doping ranges corresponding to the experimental points are shown in Fig.…”

Section: Superfluid Densitymentioning

confidence: 98%

Hypothesis of two-dimensional stripe arrangement and its implications for the superconductivity in high-Tccuprates

Fine

2004

Phys. Rev. B

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The hypothesis that holes doped into high-Tc cuprate superconductors organize themselves in two-dimensional (2D) array of diagonal stripes is discussed, and, on the basis of this hypothesis, a new microscopic model of superconductivity is proposed and solved. The model describes two kinds of hole states localized either inside the stripes or in the antiferromagnetic domains between the stripes. The characteristic energy difference between these two kinds of states is identified with the pseudogap. The onset of superconductivity is caused by the interaction, which is assumed to be mediated by the transverse fluctuations of stripes. The superconducting (SC) order parameter predicted by the model has two components, whose quantum phases exhibit a complex dependence on the the center-of-mass coordinate. The model predictions for the tunneling characteristics and for the dependence of the critical temperature (Tc) on the superfluid density show good quantitative agreement with a number of experiments. The model, in particular, predicts that the SC peaks in the tunneling spectra are asymmetric, only when ∆/Tc > 4, where ∆ is the SC gap. It is also proposed that, at least in some high-Tc cuprates, there exist two different superconducting states corresponding to the same doping concentration and the same critical temperature. Finally, the checkerboard pattern in the local density of states observed by scanning tunneling microscopy in Bi2Sr2CaCu2O 8+δ is interpreted as coming from the states localized around the centers of stripe elements forming the 2D superstructure.

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Absolute values of the London penetration depth inYBa2Cu3O6

Cited by 84 publications

References 39 publications

Duality and the vibrational modes of a Cooper-pair Wigner crystal

Duality and the vibrational modes of a Cooper-pair Wigner crystal

Muon spin rotation measurements of the vortex state in vanadium: A comparative analysis using iterative and analytical solutions of the Ginzburg-Landau equations

Hypothesis of two-dimensional stripe arrangement and its implications for the superconductivity in high-Tccuprates

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