High-temperature superconductors as heterostructures

Kapaev, V. V.; Kopaev, Yu. V.

doi:10.1134/1.567850

Cited by 11 publications

(9 citation statements)

References 6 publications

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“…It is seen from Table 2 that the values of ∆ , found from the fitting procedure, decrease with increasing of x .This pattern is understandable if we take into account that, in the spirit of the Giura et al model [27], the barrier height ∆ in Eq. (8) [27,28,29], we can consider the disorder, that is undoubtedly inherent in this system (the chaotic impurity potential), as a cause of the temperature dependence of c t [30].…”

Section: Resultsmentioning

confidence: 99%

Anisotropic temperature dependence of normal state resistivity in underdoped region of a layered electron-doped superconductor Nd2–xCexCuO4

Клепикова

Charikova

Shelushinina

et al. 2019

Low Temperature Physics

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The aim of this work is to investigate the temperature dependencies both in 2 CuO -plane and out-of plane resistivities in electron-doped CuO Ce Nd 4 x x -2 for x from 0.135 up to 015 in order to analyze the anisotropy of the electrical transport in the process of the evolution from antiferromagnetic (AF) order in the underdoped region to superconducting (SC) order in optimally doped region. Keywords: electron-doped superconductor, anisotropy of transport properties, superconducting films PACS: 74.72.Ek, 74.25.F-, 74.25.Sv) when a nonmetallic conductivity along the c axis is combined with a metallic conductivity in the ab plane was repeatedly observed in underdoped and optimally doped holetype HTSCs [1,2]. This is evidence of the quasi-two-dimensionality of oxide systems that consist of highly mobile 2 CuO layers separated by buffer layers [3,4]. The nonmetallic character of c ρ in most superconducting high-Tc compounds suggests an unconventional conduction mechanism between 2 CuO planes.

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Section: Resultsmentioning

confidence: 99%

Anisotropic temperature dependence of normal state resistivity in underdoped region of a layered electron-doped superconductor Nd2–xCexCuO4

Клепикова

Charikova

Shelushinina

et al. 2019

Low Temperature Physics

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“…In this study, we will not consider the role of tunneling between superconducting layers through dielectric interlayers in the unit cell (according to the "high-temperature cuprate superconductor as heterostructure" model [200]). We restrict ourselves to the influence of the presence of two CuO 2 planes in a single superconducting metallic layer.…”

Section: Influence Of Interlayer Hoppings On T C Of Bilayer Cupratesmentioning

confidence: 99%

ChemInform Abstract: Magnetic Mechanisms of Pairing in Strongly Correlated Electron System of Copper Oxides

et al. 2016

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“…For the system with the broken symmetry we can calculate the vacuum amplitude on the free propagators G 0 (k, τ ) and use Eqs. (3,4). However we will find the wrong thermodynamics potentials.…”

Section: Introductionmentioning

confidence: 96%

“…∆(r, T ) changes slowly on the coherent length l(T ), which is size of a Cooper pair. 3. Magnetic field H(r) = rotA(r) changes slowly on the coherent length, that is the magnetic penetration depth is Λ(T ) ≫ l(0).…”

Section: Introductionmentioning

confidence: 99%

Nonlocal Free Energy of a Spatially Inhomogeneous Superconductor

Grigorishin¹,

Lev²

2012

Commun. Theor. Phys.

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The microscopic approach was developed for obtaining of the free energy of a superconductor based on direct calculation of the vacuum amplitude. The free energy functional of the spatially inhomogeneous superconductor in a magnetic field was obtained with help of the developed approach. The obtained functional is generalization of Ginzburg-Landau functionals for any temperature, for arbitrary spatial variations of the order parameter and for the nonlocality of a magnetic response and the order parameter. Moreover, the nonlocality of the magnetic response is the consequence of order parameter's nonlocality. The extremals of this functional are considered in the explicit form in the low-and high-temperature limit at the condition of slowness of spatial variations of the order parameter.

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High-temperature superconductors as heterostructures

Cited by 11 publications

References 6 publications

Anisotropic temperature dependence of normal state resistivity in underdoped region of a layered electron-doped superconductor Nd2–xCexCuO4

Anisotropic temperature dependence of normal state resistivity in underdoped region of a layered electron-doped superconductor Nd2–xCexCuO4

ChemInform Abstract: Magnetic Mechanisms of Pairing in Strongly Correlated Electron System of Copper Oxides

Nonlocal Free Energy of a Spatially Inhomogeneous Superconductor

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