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Zhang, Y. Z.; Wen, Hao; Wang, Zhi

doi:10.1103/physrevb.74.144521

Cited by 44 publications

(27 citation statements)

References 21 publications

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“…Furthermore, it has been observed that the Arrhenius plots of ln(ρ/ρ 18 ) versus 1/T are not completely linear in the entire temperature range rather show non-linear behaviour in the lower temperature range with round curvature. Zhang et al 10 suggested that in the nonlinear region, the modified equation should be used for the analysis of U 0 using Eq. (4).…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, the broadening and shifting of the resistive transitions in external magnetic fields, are subject of great interest in high TC superconductors. [8][9][10][11][12] Such behaviour of resistive transition is due to the thermal fluctuations developed via short coherence length, large anisotropy and high TC. 11,12 These thermal fluctuations are responsible for the thermally activated flux flow (TAFF) which leads to the tail in resistive transition induced via the motion of vortices.…”

Section: Introductionmentioning

confidence: 99%

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Vortex state study of superconducting Fe(Te, Se) thin films deposited on SrTiO3 substrate by pulsed laser deposition technique

2019

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Superconducting thin films of two thicknesses have been fabricated on (100) oriented SrTiO 3 (STO) substrates using the target of composition Fe 1.05 Te 0.50 Se 0.50 by pulsed laser deposition technique. The structural and transport properties of the fabricated thin films have been investigated and the results indicate the enhancement in the superconducting properties with increasing thickness of the thin films. The onset of the superconducting transition temperature of the grown thin films of thicknesses ∼78 nm and ∼177 nm are ∼12.10 and 12.62 K at 0 T magnetic field, respectively. To estimate the upper critical fields H C2 (0), thermally activated energy (TAE) and vortex phase diagram, the magnetoresistance measurements have been performed in the magnetic field range of 0-8 T. H C2 (0) have been calculated by Ginzburg Landau (GL) theory and Werthamer-Helfand-Hohenberg model by taking the criterion of 90%, 50% and 10% of normal state resistivity and the corresponding GL coherence lengths have also been calculated. In the present work, the TAE has been estimated by conventional Arrhenius relation and modified thermally activated flux flow (TAFF) theory. The power law dependence of TAE, shows prominently the possible planer defects in the system. From the modified TAFF model, the values of fitting parameter 'q' suggests the 3 dimensional behaviour of the vortices for both the grown thin films. The vortex phase diagram study reveals the transition from the vortex liquid to vortex glass state.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Vortex state study of superconducting Fe(Te, Se) thin films deposited on SrTiO3 substrate by pulsed laser deposition technique

2019

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“…Zhang et al [23] suggested that the temperature dependent of the prefactor in equation (1) must be taken into account in the analysis. By using this suggestion to equation (1) with U = U 0 (1 − t) q , the derivative,…”

Section: Introductionmentioning

confidence: 99%

Thermally activated energy and critical magnetic fields of SmFeAsO_0.9F_0.1

Zhang¹,

Ren²,

Zhao³

2009

Supercond. Sci. Technol.

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Thermally activated flux flow and vortex glass transition of recently discovered SmFeAsO0.9F0.1 superconductor are studied in magnetic fields up to 9.0 T. The thermally activated energy is analyzed in two analytic methods, of which one is conventional and generally used, while the other is closer to the theoretical description. The thermally activated energy values determined from both methods are discussed and compared. In addition, several critical magnetic fields determined from resistivity measurements are presented and discussed.

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“…Thus the temperature dependence of the prefactor must be taken into account in the analysis. As suggested by Zhang et al [16], U ¼U 0 (1-t) q is taken in Eq. (1).…”

Section: Resultsmentioning

confidence: 99%

Effective pinning barriers of NdFeAsO0.88F0.12 superconductor

Ding

Sun

Mei

et al. 2011

Journal of Physics and Chemistry of Solids

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Thermally activated energies ofYBa2Cu3O7−δand
Y. Z. Zhang
¹
,
Hao Wen
²
,
Zhi Wang
³

Cited by 44 publications

References 21 publications

Vortex state study of superconducting Fe(Te, Se) thin films deposited on SrTiO3 substrate by pulsed laser deposition technique

Vortex state study of superconducting Fe(Te, Se) thin films deposited on SrTiO3 substrate by pulsed laser deposition technique

Thermally activated energy and critical magnetic fields of SmFeAsO_0.9F_0.1

Effective pinning barriers of NdFeAsO0.88F0.12 superconductor

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Thermally activated energies ofYBa2Cu3O7−δandY. Z. Zhang1, Hao Wen2, Zhi Wang3

Cited by 44 publications

References 21 publications

Vortex state study of superconducting Fe(Te, Se) thin films deposited on SrTiO3 substrate by pulsed laser deposition technique

Vortex state study of superconducting Fe(Te, Se) thin films deposited on SrTiO3 substrate by pulsed laser deposition technique

Thermally activated energy and critical magnetic fields of SmFeAsO0.9F0.1

Effective pinning barriers of NdFeAsO0.88F0.12 superconductor

Contact Info

Product

Resources

About

Thermally activated energies ofYBa2Cu3O7−δand
Y. Z. Zhang
¹
,
Hao Wen
²
,
Zhi Wang
³

Thermally activated energy and critical magnetic fields of SmFeAsO_0.9F_0.1