Low-field flux creep behavior near second peak H2p in Pr-doped Bi-2212 single crystal

Y. Y. Hsu; C. Y. Lin; B. N. Lin; Y. P. Sun; H. C. Ku

doi:10.1016/S0921-4526(99)00789-9

Low-field flux creep behavior near second peak H_2p in Pr-doped Bi-2212 single crystal

Y. Y. Hsu^*, C. Y. Lin, B. N. Lin, Y. P. Sun, H. C. Ku

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

Abstract

Magnetic hysteresis M(H) and magnetic relaxation M(t) results on Pr-doped single-crystal Bi₂Sr₂Ca_0.89Pr_0.11Cu₂O_8+δ with optimum T_c = 88 K are reported. Superconducting H-T phase diagram with applied field parallel to single-crystal c-axis indicates that in the mixed state the anomalous second peak field and its onset field H_2p/H_on varies from 900/800 G at 15 K to 210/85 G at 40 K with a plateau around 20-30 K. Low-field magnetic relaxation M(t) data near H_2p/H_on indicates a distinct change of flux creep behavior. For H<H_on, the relaxation mechanism follows the collective creep model M(t) = M₀[1+(μk_BT/U₀)ln(t/t₀)]^-1/μ and crosses to the vortex glass model M(t) = M₀(t/t₀)^{1/[1-(U(0)/k(B)T)]} when H>H_on. Such a crossover behavior implies a change in vortex coupling mechanism from vortex quasi-lattice to entangled vortex glass.

Original language	English
Pages (from-to)	931-932
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	281-282
DOIs	https://doi.org/10.1016/S0921-4526(99)00789-9
Publication status	Published - 2000 Jun 1
Externally published	Yes
Event	Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Jpn Duration: 1999 Aug 24 → 1999 Aug 28

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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@article{3169a825a5774e1dbcd685d66349b86e,

title = "Low-field flux creep behavior near second peak H2p in Pr-doped Bi-2212 single crystal",

abstract = "Magnetic hysteresis M(H) and magnetic relaxation M(t) results on Pr-doped single-crystal Bi2Sr2Ca0.89Pr0.11Cu2O8+δ with optimum Tc = 88 K are reported. Superconducting H-T phase diagram with applied field parallel to single-crystal c-axis indicates that in the mixed state the anomalous second peak field and its onset field H2p/Hon varies from 900/800 G at 15 K to 210/85 G at 40 K with a plateau around 20-30 K. Low-field magnetic relaxation M(t) data near H2p/Hon indicates a distinct change of flux creep behavior. For H<Hon, the relaxation mechanism follows the collective creep model M(t) = M0[1+(μkBT/U0)ln(t/t0)]-1/μ and crosses to the vortex glass model M(t) = M0(t/t0)1/[1-(U(0)/k(B)T)] when H>Hon. Such a crossover behavior implies a change in vortex coupling mechanism from vortex quasi-lattice to entangled vortex glass.",

author = "Hsu, {Y. Y.} and Lin, {C. Y.} and Lin, {B. N.} and Sun, {Y. P.} and Ku, {H. C.}",

note = "Funding Information: This work is supported by NSC88-2112-M007-003 and −033.; Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) ; Conference date: 24-08-1999 Through 28-08-1999",

year = "2000",

month = jun,

day = "1",

doi = "10.1016/S0921-4526(99)00789-9",

language = "English",

volume = "281-282",

pages = "931--932",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

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TY - JOUR

T1 - Low-field flux creep behavior near second peak H2p in Pr-doped Bi-2212 single crystal

AU - Hsu, Y. Y.

AU - Lin, C. Y.

AU - Lin, B. N.

AU - Sun, Y. P.

AU - Ku, H. C.

N1 - Funding Information: This work is supported by NSC88-2112-M007-003 and −033.

PY - 2000/6/1

Y1 - 2000/6/1

N2 - Magnetic hysteresis M(H) and magnetic relaxation M(t) results on Pr-doped single-crystal Bi2Sr2Ca0.89Pr0.11Cu2O8+δ with optimum Tc = 88 K are reported. Superconducting H-T phase diagram with applied field parallel to single-crystal c-axis indicates that in the mixed state the anomalous second peak field and its onset field H2p/Hon varies from 900/800 G at 15 K to 210/85 G at 40 K with a plateau around 20-30 K. Low-field magnetic relaxation M(t) data near H2p/Hon indicates a distinct change of flux creep behavior. For H<Hon, the relaxation mechanism follows the collective creep model M(t) = M0[1+(μkBT/U0)ln(t/t0)]-1/μ and crosses to the vortex glass model M(t) = M0(t/t0)1/[1-(U(0)/k(B)T)] when H>Hon. Such a crossover behavior implies a change in vortex coupling mechanism from vortex quasi-lattice to entangled vortex glass.

AB - Magnetic hysteresis M(H) and magnetic relaxation M(t) results on Pr-doped single-crystal Bi2Sr2Ca0.89Pr0.11Cu2O8+δ with optimum Tc = 88 K are reported. Superconducting H-T phase diagram with applied field parallel to single-crystal c-axis indicates that in the mixed state the anomalous second peak field and its onset field H2p/Hon varies from 900/800 G at 15 K to 210/85 G at 40 K with a plateau around 20-30 K. Low-field magnetic relaxation M(t) data near H2p/Hon indicates a distinct change of flux creep behavior. For H<Hon, the relaxation mechanism follows the collective creep model M(t) = M0[1+(μkBT/U0)ln(t/t0)]-1/μ and crosses to the vortex glass model M(t) = M0(t/t0)1/[1-(U(0)/k(B)T)] when H>Hon. Such a crossover behavior implies a change in vortex coupling mechanism from vortex quasi-lattice to entangled vortex glass.

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U2 - 10.1016/S0921-4526(99)00789-9

DO - 10.1016/S0921-4526(99)00789-9

M3 - Conference article

AN - SCOPUS:0033893748

SN - 0921-4526

VL - 281-282

SP - 931

EP - 932

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

T2 - Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99)

Y2 - 24 August 1999 through 28 August 1999

ER -

Low-field flux creep behavior near second peak H_2p in Pr-doped Bi-2212 single crystal

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