Upper Critical Field in Electron-Doped Superconductor with Nonstoichiometric Disorder near Antiferromagnetic-Superconducting Phase Boundary

Charikova, T. B.; Shelushinina, N. G.; Harus, G. I.; Petukhov, D. S.; Иванов, А. А.

doi:10.4028/www.scientific.net/ssp.215.77

Cited by 5 publications

(3 citation statements)

References 15 publications

(15 reference statements)

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“…The temperature dependence of the upper critical field were determined according to the standard resistivity method [20] in magnetic field up to H = 90 kOe.…”

Section: Resultsmentioning

confidence: 99%

“…The series of Nd 2−x Ce x CuO 4+δ /SrTiO 3 epitaxial films (x = 0.14, 0.15) with standard (001) orientation were synthesized by pulsed laser evaporation [20]. The original target (the sintered ceramic tablet of Nd 2−x Ce x CuO 4+δ of the given composition) was evaporated by a focused laser beam and the evaporated target material was deposited on a heated singlecrystal substrate.…”

Section: Methodsmentioning

confidence: 99%

“…So it can be used to identify this symmetry by the behavior of many properties of superconductors considered as functions of the impurity concentration. The first estimation of the behaviors of the critical temperature and the slope of the H c2 we have made some years ago [16], new interest have originated after fabrication of good quality underdoped single crystal films Nd 1.86 Ce 0.14 CuO 4+δ with different degree of disorder (δ) and detection of non-trivial disorder dependencies of the critical temperature and the slope of the H c2 [20].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Doping effect on the evolution of the pairing symmetry in n-type superconductor near antiferromagnetic phase boundary

Charikova

Shelushinina

Harus

et al. 2015

Low Temperature Physics

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We present the investigation results of the in-plane ρ(T) resistivity tensor at the temperature range 0.4-40 K in magnetic fields up to 90kOe (H c, J ab) for electrondoped Nd 2−x Ce x CuO 4+δ with different degree of disorder near antiferromagneticsuperconducting phase boundary. We have experimentally found that for optimally doped compound both the upper critical field slope and the critical temperature decrease with increasing of the disorder parameter (d-wave pairing) while in the case of the underdoped system the critical temperature remains constant and (dH c2 /dT )| Tc increases with increasing of the disorder (s-wave pairing). These features suggest a possible implementation of the complex mixture state as the (s+id)-pairing.

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“…The temperature dependence of the upper critical field were determined according to the standard resistivity method [20] in magnetic field up to H = 90 kOe.…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Doping effect on the evolution of the pairing symmetry in n-type superconductor near antiferromagnetic phase boundary

Charikova

Shelushinina

Harus

et al. 2015

Low Temperature Physics

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show abstract

Hall Resistivity Correlations in Disordered Electron-Doped $$\hbox {Nd}_{2-x}\hbox {Ce}_x\hbox {CuO}_{4+\delta }$$ Nd 2 - x

et al. 2017

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The resistivity tensor correlations ρ xy (B)∼ [ρ xx (B)] β for the mixed state magnetic field dependencies of the resistivity tensor of electron-doped Nd 2−x Ce x CuO 4+δ /SrTiO 3 single crystal films near the antiferromagnetic (AF) -superconducting (SC) phase transition and with varying degree of disorder (δ) were studied. The decrease of β from 1.2±0.2 at x = 0.14 to 0.6±0.1 at x = 0.15 points out on the evidence of the change from the anisotropic s -wave to the d -wave pairing symmetry in the external magnetic field at the transition from underdoped to optimally doped region. Peculiarities of the power law dependence of the vortex motion in the mixed state can be connected with some features of the nonstoichiometric disorder in layered electron-doped superconductors.Keywords Electron-doped superconducting film · mixed state · magnetoresistivity and Hall effect

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Correlation between the Hall Resistance and Magnetoresistance in the Mixed State of an Nd2 − xCe x CuO4 + δ Electronic Superconductor

Charikova

Shelushinina

Petukhov

et al. 2017

Phys. Metals Metallogr.

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Upper Critical Field in Electron-Doped Superconductor with Nonstoichiometric Disorder near Antiferromagnetic-Superconducting Phase Boundary

Cited by 5 publications

References 15 publications

Doping effect on the evolution of the pairing symmetry in n-type superconductor near antiferromagnetic phase boundary

Doping effect on the evolution of the pairing symmetry in n-type superconductor near antiferromagnetic phase boundary

Hall Resistivity Correlations in Disordered Electron-Doped $$\hbox {Nd}_{2-x}\hbox {Ce}_x\hbox {CuO}_{4+\delta }$$ Nd 2 - x

Correlation between the Hall Resistance and Magnetoresistance in the Mixed State of an Nd2 − xCe x CuO4 + δ Electronic Superconductor

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