The resistivity of high-Tc cuprates

Arouca, R.; Marino, E. C.

doi:10.1088/1361-6668/abd387

Cited by 10 publications

(29 citation statements)

References 43 publications

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“…Therefore, one cannot exclude other interpretations for the origin of the pseudogap. A pseudogap line tangential SC dome is also found by Marino et al [70][71][72], with a model where the pseudogap is attributed to the condensation of excitons.…”

Section: Discussionsupporting

confidence: 70%

Cuprates phase diagram deduced from magnetic susceptibility: what is the `true' pseudogap line?

Noat,

Mauger,

Nohara

et al. 2022

Preprint

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Two contradictory phase diagrams have dominated the literature of high-Tc cuprate superconductors. Does the pseudogap line cross the superconducting Tc-dome or not ? To answer, we have revisited the experimental magnetic susceptibility and knight shift of four different compounds, La1−xSrxCuO4, Bi2Sr2Ca1−xYxCu2O8, Bi2Sr2CaCu2O8+y, YBa2Cu3O6+y, as a function of temperature and doping. The susceptibility can be described by the same function for all materials, having a magnetic and an electronic contributions. The former is the 2D antiferromagnetic (AF) square lattice response, with a characteristic temperature of magnetic correlations Tmax. The latter is the 'Pauli' term, revealing the gap opening in the electronic density of states at the pseudogap temperature T * .From precise fits of the data, we find that Tmax(p) decreases linearly as a function of doping (p) over a wide range, but saturates abruptly in the overdoped regime. Concomitantly, T * (p) is linear and tangent to the dome, either crossing or approaching Tmax(p) at the top of the dome, indicating a qualitative change of behavior from underdoped to overdoped regimes.Contrary to the idea that the pseudogap terminates just above optimal doping, our analysis suggests that the gap exists throughout the phase diagram. It is consistent with a pseudogap due to hole pairs, or 'pairons', above Tc. We conclude that Tmax, reflecting the AF magnetic correlations, has often been misinterpreted as the pseudogap temperature T * .

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Section: Discussionsupporting

confidence: 70%

Cuprates phase diagram deduced from magnetic susceptibility: what is the `true' pseudogap line?

Noat,

Mauger,

Nohara

et al. 2022

Preprint

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“…We are going to examine here the genealogy of the Hamiltonian of the theory for superconductivity (SC) in the high-Tc cuprates, which we introduced recently in [1] and subsequently explored in [2,3]. This will help to build a perspective on the situation of our model and trace its origin back to the first principles.…”

Section: )The Genealogy Of the Effective Hamiltonianmentioning

confidence: 99%

“…We have recently developed [1][2][3] a comprehensive theory for both the superconducting (SC) and most of the normal phases of the cuprates, such as the pseudogap (PG), strange metal (SM), Fermi liquid (FL) and the crossover between the last two. The theory also describes the magnetically ordered antiferromagnetic (AF) phase in terms of the nonlinear sigma model whose Néel temperature we had previously obtained [4].…”

Section: ) Introductionmentioning

confidence: 99%

Orbital Order, Superconductivity, Pseudogap and Spectral Weight in High-Tc Cuprates

Marino

2021

Preprint

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After providing a brief genealogy of our recently proposed model for High-Tc cuprates, we investigate the details of the microscopic mechanism that produces an attractive interaction between neighboring holes. We show that a peculiar arrangement of the px and py oxygen orbitals makes the mutual magnetic interaction of the holes with the localized copper ions to produce a net attractive interaction between themselves, which is responsible for the emergence of a superconducting phase. We also study the connection existing between the proposed pseudogap order parameter and the spectral density. We show that the occurrence of two sharp peaks in the latter, between which the density of states suffers a depletion is a direct consequence of the d-wave character of the pseudogap order parameter dependence on k, which breaks the 90 • -rotation symmetry of the oxygen lattices. The peak separation in the spectral density works effectively as an overall pseudogap order parameter for the cuprates. We explicitly calculate the spectral density in the strange metal and pseudogap phases of Bi2212, at different temperatures, and show that our results compare very well with the experimental data.

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“…Three fundamental issues, concerning superconductivity (SC), the pseudogap and their interplay, have attracted the special attention of the community of high-Tc SC in cuprates, recently. In this study, we approach all of them, from the perspective of a recently proposed comprehensive theory for these materials [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Three studies in high-Tc cuprates

Marino

2022

New J. Phys.

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We investigate three fundamental issues in the physics of high-Tc cuprates, from the perspective of a recently proposed comprehensive theory for these materials. a) Orbital Ordering × Superconductivity. The first issue is the detailed microscopic mechanism that produces an attractive interaction between holes in High-Tc cuprates. b) Dispersion Relation × Pseudogap Order Parameter. The second issue refers to the existence of a pseudogap order parameter, which would be different from zero all over the pseudogap phase and would vanish elsewhere. c) Chemical Potential × Quantum Critical Point Location. The third issue concerns the debate as to whether the quantum critical point, located where the pseudogap transition line T ∗ (x) meets the T = 0 axis is inside the superconducting dome or at its boundary. We obtain clearcut solutions for the three issues.

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The resistivity of high-Tc cuprates

Cited by 10 publications

References 43 publications

Cuprates phase diagram deduced from magnetic susceptibility: what is the `true' pseudogap line?

Cuprates phase diagram deduced from magnetic susceptibility: what is the `true' pseudogap line?

Orbital Order, Superconductivity, Pseudogap and Spectral Weight in High-Tc Cuprates

Three studies in high-Tc cuprates

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