Resistivity, fluctuation‐enhanced conductivity, and irreversibility line of high‐quality Tl2Ba2Ca2Cu3O10 single crystals

Winzer, Klaus; Kumm, G.; Maass, Petra; Thomas, H.; Schwarzmann, Einhard; Aghaie, A.; Ladenberger, F.

doi:10.1002/andp.19925040702

Cited by 14 publications

(1 citation statement)

References 29 publications

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“…Paraconductivity 2 goAL(2D)(0)e s -) 16At 2 AL( 3D ) ( 0 )e -( /2 32fig(0) (2) (3) where e is the electron charge, A is the reduced Planck constant, t is the thickness of the film, g(0) is the zerotemperature…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Superconducting fluctuations inBi2Sr2
Lang
¹
,
Heine
²
,
Kula
³

et al. 1995
Phys. Rev. B

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A detailed study of normal-state magnetotransport properties in (Bi,Pb)~Sr2Ca2Cu30 thin films with a zero-resistance critical temperature T,0=105 K prepared by dc-magnetron sputtering on MgO substrates is reported. Measurements of the electrical resistivity, the magnetoresistance, and the Hall effect are analyzed with regard to contributions of the superconducting order-parameter thermodynamic Auctuations, using theories for two-dimensional, layered superconductors.We have obtained a consistent set of parameters, i.e. , the in-plane coherence length g,b(0) =1.6 nm, the out-of-plane coherence length g, (0) =0.14 nm, and the electron-hole asymmetry parameter P= -0.38. At temperatures below 118 K, we observe a remarkable enhancement (above theoretical predictions) of both the excess Hall effect and magnetoconductivity,whereas no such effect is detected for the zero-field paraconductivity.The above anomalies are attributed to a nonuniform critical temperature distribution inside our samples and can be well explained assuming a Gaussian distribution of T, s with a standard deviation 6T, =2.3 K. The excess Hall effect caused by superconducting fluctuations is negative in the entire accessible temperature range, which indicates, together with the paraconductivity and magnetoconductivity results that the indirect (Maki-Thompson) Auctuation process for (Bi,Pb)2Sr2Ca2Cu30" is vanishingly small at temperatures from T, to 130 K.(2D) to three-dimensional (3D) behavior in the vicinity of T, can be estimated. There has been a considerable discussion whether the results in YBa2Cu307 indicate a 2D behavior, ' with a possible crossover to 3D, or isotropic superconductivity. This question is of substantial interest with regard to the role of coupling along the c axis in the superconducting state.

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Section: Theoretical Backgroundmentioning

confidence: 99%

Superconducting fluctuations inBi2Sr2
Lang
¹
,
Heine
²
,
Kula
³

et al. 1995
Phys. Rev. B

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Superconducting Elements, Alloys, and Compounds

Buckel¹,

Kleiner

2004

Superconductivity

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Supraleitende Elemente, Legierungen und Verbindungen

Buckel¹,

Kleiner

2012

Supraleitung

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Resistivity, fluctuation‐enhanced conductivity, and irreversibility line of high‐quality Tl₂Ba₂Ca₂Cu₃O₁₀ single crystals

Abstract: Abstract. We present measurements of the resistivity tensor components p , ( T )

Cited by 14 publications

References 29 publications

Superconducting fluctuations inBi2Sr2
Lang
¹
,
Heine
²
,
Kula
³

et al. 1995
Phys. Rev. B

Superconducting fluctuations inBi2Sr2
Lang
¹
,
Heine
²
,
Kula
³

et al. 1995
Phys. Rev. B

Superconducting Elements, Alloys, and Compounds

Supraleitende Elemente, Legierungen und Verbindungen

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Resistivity, fluctuation‐enhanced conductivity, and irreversibility line of high‐quality Tl2Ba2Ca2Cu3O10 single crystals

Abstract: Abstract. We present measurements of the resistivity tensor components p , ( T )

Cited by 14 publications

References 29 publications

Superconducting fluctuations inBi2Sr2Lang1, Heine2, Kula3 et al. 1995Phys. Rev. B

Superconducting fluctuations inBi2Sr2Lang1, Heine2, Kula3 et al. 1995Phys. Rev. B

Superconducting Elements, Alloys, and Compounds

Supraleitende Elemente, Legierungen und Verbindungen

Contact Info

Product

Resources

About

Resistivity, fluctuation‐enhanced conductivity, and irreversibility line of high‐quality Tl₂Ba₂Ca₂Cu₃O₁₀ single crystals

Superconducting fluctuations inBi2Sr2
Lang
¹
,
Heine
²
,
Kula
³

et al. 1995
Phys. Rev. B

Superconducting fluctuations inBi2Sr2
Lang
¹
,
Heine
²
,
Kula
³

et al. 1995
Phys. Rev. B