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Takenaka, K.; Nohara, J.; Shiozaki, R.; Sugai, S.

doi:10.1103/physrevb.68.134501

Cited by 64 publications

(69 citation statements)

References 33 publications

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“…The situation is different in cuprates. Examples of ρ ab for LSCO at a range of dopings from Takenaka et al [34] are shown in the left-hand panels of Fig. 22.…”

Section: Transport and Magnetic Susceptibility Measurementsmentioning

confidence: 99%

Spins, stripes, and superconductivity in hole-doped cuprates

Tranquada¹

2013

AIP Conference Proceedings

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Abstract. One of the major themes in correlated electron physics over the last quarter century has been the problem of high-temperature superconductivity in hole-doped copper-oxide compounds. Fundamental to this problem is the competition between antiferromagnetic spin correlations, a symptom of strong Coulomb interactions, and the kinetic energy of the doped carriers, which favors delocalization. After discussing some of the early challenges in the field, I describe the experimental picture provided by a variety of spectroscopic and transport techniques. Then I turn to the technique of neutron scattering, and discuss how it is used to determine spin correlations, especially in model systems of quantum magnetism. Neutron scattering and complementary techniques have determined the extent to which antiferromagnetic spin correlations survive in the cuprate superconductors. One experimental case involves the ordering of spin and charge stripes. I first consider related measurements on model compounds, such as La 2−x Sr x NiO 4+δ , and then discuss the case of La 2−x Ba x CuO 4 . In the latter system, recent transport studies have demonstrated that quasi-two-dimensional superconductivity coexists with the stripe order, but with frustrated phase order between the layers. This has led to new concepts for the coexistence of spin order and superconductivity. While the relevance of stripe correlations to high-temperature superconductivity remains a subject of controversy, there is no question that stripes are an intriguing example of electron matter that results from strong correlations.Keywords: superconductivity, antiferromagnetism, charge order, stripes, cuprates, nickelates, neutron scattering PACS: 78.70.Nx OPENING REMARKSCuprate superconductivity is a fascinating field, with an enormous literature. There have been a great many measurements done on a wide variety of cuprate families. There are numerous theoretical perspectives on the nature of these materials and on the mechanism of superconductivity.I approach this topic not as an unbiased outside observer, but as a participant who has been around from the beginning. My purpose here is not to present a balanced review of all work and perspectives in the field, as there would be too much to cover. Instead, I will present one story about hole-doped cuprates, based largely on experiment and especially on neutron scattering studies. Since one of the main advantages of neutrons is their ability to follow dynamic antiferromagnetic spin correlations, it should come as no surprise that they will play a key role in the story.I have tried to cite sufficient references (especially review articles) so that the curious reader can find further information and potentially a starting point in searching the broader literature. I have not attempted to cite all relevant work, as that would have been

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“…The situation is different in cuprates. Examples of ρ ab for LSCO at a range of dopings from Takenaka et al [34] are shown in the left-hand panels of Fig. 22.…”

Section: Transport and Magnetic Susceptibility Measurementsmentioning

confidence: 99%

Spins, stripes, and superconductivity in hole-doped cuprates

Tranquada¹

2013

AIP Conference Proceedings

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“…In normal metals, resistivity ρ saturates in the vicinity of Ioffe-Regel-Mott limit ρ IRM where elastic mean free path l min becomes comparable to interatomic distance [18,19]. In cuprates, however, signs of saturation are seen at ρ sat much larger than ρ IRM calculated from the semiclassical Boltzmann theory [20][21][22][23]. Moreover, ρ(1000 K) (∼ ρ sat ) in LSCO changes as 1/x, while for n ∝ x (Ref.…”

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confidence: 99%

“…The above can be explained by breakdown of the quasiparticle picture due to strong inelastic scattering at high T manifested by disappearing of a Drude peak in σ(ω) (Refs. [23,[25][26][27]). In systems where impurity scattering dominates the carrier relaxation (quasiparticle decay) rate 1/τ , the Drude peak is centered at ω=0 regardless of how strong scattering becomes [2,23].…”

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confidence: 99%

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Saturation of resistivity and Kohler's rule in Ni-dopedLa1.85Sr0.15CuO4cuprate

2017

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We present the results of electrical transport measurements of La1.85Sr0.15Cu1−yNiyO4 thin singlecrystal films at magnetic fields up to 9 T. Adding Ni impurity with strong Coulomb scattering potential to slightly underdoped cuprate makes the signs of resistivity saturation at ρsat visible in the measurement temperature window up to 350 K. Employing the parallel-resistor formalism reveals that ρsat is consistent with classical Ioffe-Regel-Mott limit and changes with carrier concentration n as ρsat ∝ 1/ √ n. Thermopower measurements show that Ni tends to localize mobile carriers, decreasing their effective concentration as n ∼ = 0.15 − y. The classical unmodified Kohler's rule is fulfilled for magnetoresistance in the nonsuperconducting part of the phase diagram when applied to the ideal branch in the parallel-resistor model.

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“…3 However, both in cuprates and in alkali-doped fullerenes the theoretical prediction of the resistivity saturation at the IoffeRegel limit seems to fail. 4,5 Experimental measurements in lightly doped cuprates show a resistivity greater than the saturation value ρ sat estimated by the simple quasiparticle picture, 4,6,7 and also transport measurements in the alkali-doped compounds would predict at high temperatures a mean free path smaller than the intermolecular distance. 5 Although these two classes of materials present significant differences, an interesting common trait which is shared by both families is the relevant role of a strong electronic correlation.…”

Section: Introductionmentioning

confidence: 99%

Transport properties in correlated systems: An analytical model

2005

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Several studies have so far investigated transport properties of strongly correlated systems. Interesting features of these materials are the lack of resistivity saturation well beyond the Mott-IoffeRegel limit and the scaling of the resistivity with the hole density in underdoped cuprates. Due to the strongly correlated nature of these materials, mainly numerical techniques have been employed. A key role in this regards is thought to be played by the continuous transfer of spectral weight from coherent to incoherent states. In this paper we employ a simple analytical expression for the electronic Green's function to evaluate both quasi-particle and transport properties in correlated systems. Our analytical approach permits to enlighten the specific role of the spectral transfer due to the correlation on different features. In particular we investigate the dependence of both quasi-particle and transport scattering rate on the correlation degree and the criterion for resistivity saturation.

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Incoherent charge dynamics ofLa2−xSrxCuO

Cited by 64 publications

References 33 publications

Spins, stripes, and superconductivity in hole-doped cuprates

Spins, stripes, and superconductivity in hole-doped cuprates

Saturation of resistivity and Kohler's rule in Ni-dopedLa1.85Sr0.15CuO4cuprate

Transport properties in correlated systems: An analytical model

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