Muon Spin Relaxation Studies of Zn-Substitution Effects in High-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>T</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="italic">c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>Cuprate Superconductors

Nachumi, B.; Keren, Amit; Kojima, Kenji; Larkin, M.; Luke, G. M.; Merrin, J.; Tchernyshöv, O.; Uemura, Y. J.; Ichikawa, Noriya; Goto, Masahiro; Uchida, S.

doi:10.1103/physrevlett.77.5421

Cited by 238 publications

(230 citation statements)

References 22 publications

(37 reference statements)

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“…Systems in the optimally doped region deviate from this linear line, showing a "plateau" like behavior, which was later found out to be due to the effect of the CuO chains in the case of the YBCO systems [29]. We see that the nearly linear trend is followed also by systems with Cu/Zn substitution [8], spontaneous formation of static magnetic regions (shown with the "stripe" symbols), and even with overdoping (Tl2201) [24], the implications of which will be discussed in later sections.…”

Section: Plots Of Tc Vs Ns/m * and Tc Vs Tfmentioning

confidence: 52%

“…The first signature of this came in our study of Zn-doped YBCO and LSCO systems in 1996 [8]. As shown in Fig.…”

Section: Heterogeneitymentioning

confidence: 96%

“…By combining the universal correlations and the pseudo-gap behavior, we proposed a picture for the cuprates based on crossover from Bose-Einstein (BE) to BCS condensation in 1994 [6,7]. We also demonstrated that the correlations between T c and n s /m * are robust against various artificial/spontaneous formations of spatial heterogeneity, such as Cu/Zn substitution, for which we proposed the "Swiss Cheese Model" in 1996 [8].…”

Section: Introductionmentioning

confidence: 99%

“…8(b), for La1.9Sr0.1CuO4 [13,14], which represents the case for "hypothetical 3-d and roton-less underdoped LSCO". The BE-BCS crossover picture proposed by Uemura [6,7] [8]. The solid line represents the variation expected for the "swiss cheese model" illustrated on the top, where superconductivity around each Zn is assumed to be destroyed in the area of πξ 2 ab .…”

Section: Acknowledgmentmentioning

confidence: 99%

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Condensation, excitation, pairing, and superfluid density in high-T_c superconductors: the magnetic resonance mode as a roton analogue and a possible spin-mediated pairing

Uemura¹

2004

J. Phys.: Condens. Matter

100

123

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To find out a primary determing factor of Tc and a pairing mechanism in high-Tc cuprates, we combine the muon spin relaxation results on ns/m * (superconducting carrier density / effective mass), accumulated over the last 15 years, with the results from neutron and Raman scattering, STM, specific heat, Nernst effect and ARPES measurements. We identify the neutron magnetic resonance mode as an analogue of roton minimum in the superfluid 4 He, and argue that ns/m * and the resonance mode energy ωres play a primary role in determining Tc in the underdoped region. We propose a picture that roton-like excitations in the cuprates appear as a coupled mode, which has the resonance mode for spin and charge responses at different momentum transfers but the same energy transfers, as detected respectively, by the neutron S=1 mode and the Raman S=0 A1g mode. We shall call this as the "hybrid spin/charge roton". After discussing the role of dimensionality in condensation, we propose a generic phase diagram of the cuprates with spatial phase separation in the overdoped region as a special case of the BE-BCS crossover conjecture where the superconducting coupling is lost rapidly in the overdoped region. Using a microscopic model of charge motion resonating with antiferomagnetic spin fluctuations, we propose a possibility that the hybrid spin/charge roton and higher-energy spin fluctuations mediate the superconducting pairing. In this model, the resonance modes can be viewed as a meson-analogue and the "dome" shape of the phase diagram can be understood as a natural consequence of departure from the competing Mott insulator ground state via carrier doping.

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Section: Plots Of Tc Vs Ns/m * and Tc Vs Tfmentioning

confidence: 52%

“…The first signature of this came in our study of Zn-doped YBCO and LSCO systems in 1996 [8]. As shown in Fig.…”

Section: Heterogeneitymentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Acknowledgmentmentioning

confidence: 99%

See 2 more Smart Citations

Condensation, excitation, pairing, and superfluid density in high-T_c superconductors: the magnetic resonance mode as a roton analogue and a possible spin-mediated pairing

Uemura¹

2004

J. Phys.: Condens. Matter

100

123

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“…µSR [23] and NMR [24] studies indicate that Zn suppresses superconductivity locally, resulting in electronic inhomogeneity. One might expect that if Zn serves to pin stripes, this effect would also be inhomogeneous.…”

Section: Nature Of the Spin And Charge Density Modu-lationsmentioning

confidence: 99%

Charge segregation and antiferromagnetism in high-Tc superconductors

Tranquada¹,

Ichikawa²,

Kakurai³

et al. 1999

Journal of Physics and Chemistry of Solids

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Local antiferromagnetism coexists with superconductivity in the cuprates. Charge segregation provides a way to reconcile these properties. Direct evidence for modulated spin and charge densities has been found in neutron and X-ray scattering studies of Nd-doped La 2−x Sr x CuO 4 . Here we discuss the nature of the modulation, and present some new results for a Zn-doped sample. Some of the open questions concerning the connections between segregation and superconductivity are described.

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Neutron Scattering Studies of Antiferromagnetic Correlations in Cuprates

Tranquada

2006

ChemInform

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Muon Spin Relaxation Studies of Zn-Substitution Effects in High-TcCuprate Superconductors

Cited by 238 publications

References 22 publications

Condensation, excitation, pairing, and superfluid density in high-T_c superconductors: the magnetic resonance mode as a roton analogue and a possible spin-mediated pairing

Condensation, excitation, pairing, and superfluid density in high-T_c superconductors: the magnetic resonance mode as a roton analogue and a possible spin-mediated pairing

Charge segregation and antiferromagnetism in high-Tc superconductors

Neutron Scattering Studies of Antiferromagnetic Correlations in Cuprates

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Muon Spin Relaxation Studies of Zn-Substitution Effects in High-TcCuprate Superconductors

Cited by 238 publications

References 22 publications

Condensation, excitation, pairing, and superfluid density in high-Tc superconductors: the magnetic resonance mode as a roton analogue and a possible spin-mediated pairing

Condensation, excitation, pairing, and superfluid density in high-Tc superconductors: the magnetic resonance mode as a roton analogue and a possible spin-mediated pairing

Charge segregation and antiferromagnetism in high-Tc superconductors

Neutron Scattering Studies of Antiferromagnetic Correlations in Cuprates

Contact Info

Product

Resources

About

Condensation, excitation, pairing, and superfluid density in high-T_c superconductors: the magnetic resonance mode as a roton analogue and a possible spin-mediated pairing

Condensation, excitation, pairing, and superfluid density in high-T_c superconductors: the magnetic resonance mode as a roton analogue and a possible spin-mediated pairing