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Resistivity ofLa1.825Sr0.175CuO4andYBa2Cu3O7to 1100 K: Absence of saturation and its implications

Gurvitch, M., Fiory, A. T.·1987·Physical Review Letters

Abstract

Resistivity was measured from ${T}_{c}$ to 1100 K for ${\mathrm{La}}_{1.825}$${\mathrm{Sr}}_{0.175}$${\mathrm{CuO}}_{4}$, where it is linear to 1100 K, and for ${\mathrm{YBa}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7}$, where it is linear to 600 K, increases faster than linear at T>600 K because of loss of oxygen, and changes slope at the 950-K structural transition. The observed absence of saturation in the linear parts of the data implies weak electron-phonon coupling in both superconductors, thus excluding the possibility of phonon-mediated superconductivity. Values of the plasma energy are derived in combination with other experimental data.

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Metadata

Authors
Gurvitch, M., & Fiory, A. T.
Venue
Physical Review Letters
Published
1987-09-21
Volume
59
Issue
12
Pages
1337-1340
ISSN
0031-9007 (ISSN-L)
OpenAlex
W1638661217
Cited by
621
References
9
FWCI
13.99
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Resistivity ofLa1.825Sr0.175CuO4andYBa2Cu3O7to 1100 K: Absence of saturation and its implications. https://app.cochat.ai/papers/10.1103/physrevlett.59.1337
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Gurvitch, M., & Fiory, A. T. (1987). Resistivity ofLa1.825Sr0.175CuO4andYBa2Cu3O7to 1100 K: Absence of saturation and its implications. Physical Review Letters. https://doi.org/10.1103/physrevlett.59.1337

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