A new family of high-Tc compounds—Stepping stones toward understanding unconventional superconductivity

Sun, Yang; Guidry, Mike; ChengLi, Wu

doi:10.1007/s11434-008-0250-4

Sci. Bull.

2008

DOI: 10.1007/s11434-008-0250-4

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A new family of high-Tc compounds—Stepping stones toward understanding unconventional superconductivity

Yang Sun

Mike Guidry²,

Wu ChengLi

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Cited by 6 publications

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Inhomogeneity, dynamical symmetry, and complexity in high-temperature superconductors: Reconciling a universal phase diagram with rich local disorder

Guidry

Sun

2011

Chin. Sci. Bull.

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A model for high-temperature superconductors incorporating antiferromagnetism, d-wave superconductivity, and no double latticesite occupancy can give energy surfaces delicately balanced between antiferromagnetic and superconducting order for specific ranges of doping and temperature. The resulting properties can reconcile a universal cuprate phase diagram with rich inhomogeneity, relate that inhomogeneity to pseudogaps, give a fundamental rationale for giant proximity effects and other emergent behavior, and provide an objective framework to separate essential from peripheral in the superconducting mechanism.high-temperature superconductivity, pseudogap, critical dynamical symmetry, inhomogeneity, complexity, emergent behavior High-temperature superconductivity was discovered more than two decades ago [1], but its interpretation remains controversial [2,3]. We believe that this lack of theoretical consensus may be attributed to two fundamental, and related, issues: (1) Most models emphasize a limited aspect of the (complex) problem; as a result, there are few solvable models that capture a sufficient range of essential physics. (2) The complex behavior of these compounds obscures the superconducting mechanism because, in the absence of solvable models incorporating a sufficiently wide range of the physics, it is difficult to separate essential from secondary features using only data. For example, high-temperature superconductors exhibit a variety of spatial inhomogeneities such as stripes or checkerboards, particularly in the hole-underdoped region and near magnetic vortex cores [4][5][6][7][8]. The relationship of these inhomogeneities to the unusual properties of these systems has yet to be settled. Does it lead to superconductivity (SC)?

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Inhomogeneity, dynamical symmetry, and complexity in high-temperature superconductors: Reconciling a universal phase diagram with rich local disorder

Guidry

Sun

2011

Chin. Sci. Bull.

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New high-temperature superconductors based on rare-earth and transition metal oxyarsenides and related phases: synthesis, properties and simulations

Ivanovskiĭ¹

2008

Phys.-Usp.

141

155

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Strong anisotropy of cuprate pseudogap correlations: implications for Fermi arcs and Fermi pockets

Guidry

Sun

2009

New J. Phys.

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A new family of high-Tc compounds—Stepping stones toward understanding unconventional superconductivity

Cited by 6 publications

References 18 publications

Inhomogeneity, dynamical symmetry, and complexity in high-temperature superconductors: Reconciling a universal phase diagram with rich local disorder

Inhomogeneity, dynamical symmetry, and complexity in high-temperature superconductors: Reconciling a universal phase diagram with rich local disorder

New high-temperature superconductors based on rare-earth and transition metal oxyarsenides and related phases: synthesis, properties and simulations

Strong anisotropy of cuprate pseudogap correlations: implications for Fermi arcs and Fermi pockets

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