Vortex solid-solid transition in a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Bi</mml:mi></mml:mrow><mml:mrow><mml:mn>1.6</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Pb</mml:mi></mml:mrow><mml:mrow><mml:mn>0.4</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Sr</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:

Baziljevich, M.; Giller, D.; McElfresh, M.; Abulafia, Y.; Radzyner, Y.; Schneck, J.; Johansen, T. H.; Yeshurun, Y.

doi:10.1103/physrevb.62.4058

Cited by 49 publications

(35 citation statements)

References 62 publications

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“…4 -10 For Bi-2212 superconductors, since Cai et al 9 and Chong et al 26 found that Pb doping has a remarkable effect on its superconductivity and flux pinning, in particular, on its anisotropy, the investigation on AMP and the magnetic vortex phase diagram in the mixed state of Pb-doped Bi-2212 single crystals has attracted great attention. 27 Recently, a heavily Pb-doped ͑Bi,Pb͒-2212 single crystal with pronouncedly reduced anisotropy was obtained. The lower anisotropy of ͑Bi,Pb͒-2212 single crystals was verified by its remarkable decrease of out-of-plane resistivity ( c ) in the normal state and the metallic behavior of c (T) above 122 K, which is considerably different from that of free-Pb Bi-2212 single crystal.…”

Section: Introductionmentioning

confidence: 99%

Magnetic relaxation measurements on a heavily Pb-dopedBi2Sr2CaCu
Sun
¹
,
Song
²
,
Du
³

et al. 2002
Phys. Rev. B
7
1
6
0
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The magnetic relaxation measurements on a heavily Pb-doped Bi 2 Sr 2 CaCu 2 O 8ϩ␦ single crystal were carried out in the vicinity of both the anomalous magnetization peak H 2 p and its onset field H on at different temperatures. The results show that both the normalized magnetic relaxation rate S(ϭϪd ln M/d ln t) and the pinning potential U 0 exhibit remarkable changes near H on and H 2 p in the temperature region where H on (T) follows the relation of the disorder induced vortex lattice transition, H on (T)ϭH on (0)͓1Ϫ(T/T c ) 4 ͔ 3/2 . For both HϽH on and HϾH 2 p , S increases and U 0 decreases, respectively, with increasing magnetic fields. A negative power law of U 0 (H)ϰH Ϫ␣ was observed for both HϽH on and for HϾH 2 p . There exists a minimum in the magnetic-field dependence of S(H) and a maximum in the pinning potential U 0 (H) in the field range between H on and H 2 p . At lower temperature region where H on (T) deviates from the above relation, U 0 (H) behaves differently. The results are discussed in terms of both collective flux creep model and plastic flux creep model.

show abstract

Section: Introductionmentioning

confidence: 99%

Magnetic relaxation measurements on a heavily Pb-dopedBi2Sr2CaCu
Sun
¹
,
Song
²
,
Du
³

et al. 2002
Phys. Rev. B
7
1
6
0
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“…This superconductor has much smaller anisotropy γ ∼ 70 [12]. Presumably, this indicates that its Josephson coupling parameter is higher than that of pure BSCCO.…”

Section: Discussionmentioning

confidence: 94%

Effect of the intrinsic Josephson coupling on the pancake lattice in layered superconductors

Rozhkov

2006

Phys. Rev. B

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We study the pancake lattice system induced by application of transverse magnetic filed to the layered superconductor. A simple statistical field theory for the pancake lattice is derived. It incorporates effects of the magnetic interaction between pancakes as well as those of the interlayer Josephson coupling. The proposed description enables us to estimate the pancake crystal melting temperature from above. Also, it allows us to compare directly the effects of the magnetic and Josephson energies on the statistical properties of the pancake lattice. We demonstrate that even for such an anisotropic material as BSCCO the pancake interaction induced by the Josephson coupling is of the same order as the magnetic interaction.

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“…12,13,[43][44][45][46][47][48][49] Roughly, two types of temperature evolution for H SP are observed. In one class of materials H SP decreases nonmonotonically on warming, presenting a valley structure at low temperatures.…”

Section: Effect Of Oxygen Doping On the Vortex Phase Diagram Of mentioning

confidence: 99%

Vortex phase diagram and temperature-dependent second-peak effect in overdopedBi2Sr2CuO6+δcrystals

et al. 2010

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We study the vortex phase diagram of the single-layer Bi 2 Sr 2 CuO 6+␦ ͑Bi2201͒ superconductor by means of bulk magnetization measurements on high-quality oxygen-overdoped crystals. In striking contrast with the results found in the moderately doped two-and three-layer Bi-based cuprates, Bi2201 exhibits a strong temperature-dependent second-peak effect. By means of measurements of the in-plane and out-of-plane firstpenetration field we provide direct evidence that this phenomenon is mainly associated to an increase in the electromagnetic anisotropy on warming. The effect of oxygen-doping ␦ on the vortex phase diagram results in both the irreversibility and second-peak lines shifting to higher temperatures and fields. This enhanced stability of the Bragg glass phase suggests that the interlayer coupling between Cu-O layers increases with ␦. In addition, we found that the critical temperature follows the parabolic relation with the number of holes per Cu-O plane that holds for most single-and two-layer cuprates.

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Vortex solid-solid transition in aBi1.6Pb0.4Sr2

Cited by 49 publications

References 62 publications

Magnetic relaxation measurements on a heavily Pb-dopedBi2Sr2CaCu
Sun
¹
,
Song
²
,
Du
³

et al. 2002
Phys. Rev. B
7
1
6
0
View full text Add to dashboard Cite

Magnetic relaxation measurements on a heavily Pb-dopedBi2Sr2CaCu
Sun
¹
,
Song
²
,
Du
³

et al. 2002
Phys. Rev. B
7
1
6
0
View full text Add to dashboard Cite

Effect of the intrinsic Josephson coupling on the pancake lattice in layered superconductors

Vortex phase diagram and temperature-dependent second-peak effect in overdopedBi2Sr2CuO6+δcrystals

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Vortex solid-solid transition in aBi1.6Pb0.4Sr2

Cited by 49 publications

References 62 publications

Magnetic relaxation measurements on a heavily Pb-dopedBi2Sr2CaCuSun1, Song2, Du3 et al. 2002Phys. Rev. B7160View full textAdd to dashboardCite

Magnetic relaxation measurements on a heavily Pb-dopedBi2Sr2CaCuSun1, Song2, Du3 et al. 2002Phys. Rev. B7160View full textAdd to dashboardCite

Effect of the intrinsic Josephson coupling on the pancake lattice in layered superconductors

Vortex phase diagram and temperature-dependent second-peak effect in overdopedBi2Sr2CuO6+δcrystals

Contact Info

Product

Resources

About

Magnetic relaxation measurements on a heavily Pb-dopedBi2Sr2CaCu
Sun
¹
,
Song
²
,
Du
³

et al. 2002
Phys. Rev. B
7
1
6
0
View full text Add to dashboard Cite

Magnetic relaxation measurements on a heavily Pb-dopedBi2Sr2CaCu
Sun
¹
,
Song
²
,
Du
³

et al. 2002
Phys. Rev. B
7
1
6
0
View full text Add to dashboard Cite