Specific heat of the superconductor YBa2Cu4O8 from 1.5 to 330 K
Тип публикации: Journal Article
Дата публикации: 1990-06-01
SCImago Q2
WOS Q4
БС3
SJR: 0.434
CiteScore: 2.3
Impact factor: 1.5
ISSN: 09214534, 18732143
Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering
Energy Engineering and Power Technology
Краткое описание
The specific heat of four samples of the 81 K-superconductor Yba 2 Cu 4 O 8 prepared under high oxygen pressure is investigated. The low-temperature specific heat is sample-dependent. For the most homogeneous sample, the coefficient of the linear term at T ⪡ T c is γ ∗ =4.9±0.2mJ/(K 2 mole) and the initial Debye temperature is θ (0)=350±10K. A small specific heat jump Δ C / T c =12 to 16 mJ/(K 2 mole) is observed at the superconducting transition; it is only weakly correlated with the field cooling Meissner fraction (14 to 55% in 20 Oe). A tentative separation of the total specific heat into electron and phonon terms is obtained by a least-squares fit of high-temperature data using a model of the phonon density of states. The electron contribution is found to be much smaller than for YBa 2 CU 3 O 7 . Thermochemical data are tabulated.
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Junod A. et al. Specific heat of the superconductor YBa2Cu4O8 from 1.5 to 330 K // Physica C: Superconductivity and its Applications. 1990. Vol. 168. No. 1-2. pp. 47-56.
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Junod A., Eckert D., Graf T., Kaldis E., Karpinski J., Rusiecki S., Sánchez D., Triscone G., Muller J. Specific heat of the superconductor YBa2Cu4O8 from 1.5 to 330 K // Physica C: Superconductivity and its Applications. 1990. Vol. 168. No. 1-2. pp. 47-56.
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TY - JOUR
DO - 10.1016/0921-4534(90)90102-k
UR - https://doi.org/10.1016/0921-4534(90)90102-k
TI - Specific heat of the superconductor YBa2Cu4O8 from 1.5 to 330 K
T2 - Physica C: Superconductivity and its Applications
AU - Junod, A
AU - Eckert, D.
AU - Graf, Thomas
AU - Kaldis, E.
AU - Karpinski, J
AU - Rusiecki, S
AU - Sánchez, D.
AU - Triscone, G
AU - Muller, J.
PY - 1990
DA - 1990/06/01
PB - Elsevier
SP - 47-56
IS - 1-2
VL - 168
SN - 0921-4534
SN - 1873-2143
ER -
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@article{1990_Junod,
author = {A Junod and D. Eckert and Thomas Graf and E. Kaldis and J Karpinski and S Rusiecki and D. Sánchez and G Triscone and J. Muller},
title = {Specific heat of the superconductor YBa2Cu4O8 from 1.5 to 330 K},
journal = {Physica C: Superconductivity and its Applications},
year = {1990},
volume = {168},
publisher = {Elsevier},
month = {jun},
url = {https://doi.org/10.1016/0921-4534(90)90102-k},
number = {1-2},
pages = {47--56},
doi = {10.1016/0921-4534(90)90102-k}
}
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MLA
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Junod, A., et al. “Specific heat of the superconductor YBa2Cu4O8 from 1.5 to 330 K.” Physica C: Superconductivity and its Applications, vol. 168, no. 1-2, Jun. 1990, pp. 47-56. https://doi.org/10.1016/0921-4534(90)90102-k.
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