Diamagnetism in the normal state of YBa2Cu3O7

R. E. Walstedt, R. F. Bell, Lynn Schneemeyer, J. V. Waszczak, G. P. Espinosa

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Abstract

Precise Cu63 NMR shift results are reported for both copper sites in oriented powder samples of YBa2Cu3O7.0, in which the weak normal-state temperature dependences are resolved. Magnetic-susceptibility data are also given, which, in spite of the presence of small Curie-like terms, are shown to have the same intrinsic temperature dependence as data recently presented by Lee, Klemm, and Johnston. A combined analysis of shift and susceptibility data is described, in which we obtain (1) a partition of the spin paramagnetism between the chain and plane sites, (2) a full description of the susceptibility and hyperfine interaction tensors based only on static measurements, and (3) extracted values for temperature-dependent diamagnetism under field orientation both along the c axis and in the ab plane. The c-axis diamagnetism is large and decays with temperature in a fashion consistent with the asymptotic T-1 behavior predicted in recent theories. In the ab plane, the diamagnetism sets on at T125 K in what appears to be a dimensional crossover from purely two-dimensional behavior at high temperatures. The analysis also suggests that the actual degree of bulk susceptibility anisotropy is slightly higher than experimentally reported values. The hyperfine parameters are not markedly changed from those given earlier by Mila and Rice.

Original languageEnglish
Pages (from-to)8074-8084
Number of pages11
JournalPhysical Review B
Volume45
Issue number14
DOIs
StatePublished - 1 Jan 1992

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diamagnetism
magnetic permeability
temperature dependence
paramagnetism
shift
rice
partitions
crossovers
tensors
copper
nuclear magnetic resonance
anisotropy
temperature
decay
interactions

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Walstedt, R. E., Bell, R. F., Schneemeyer, L., Waszczak, J. V., & Espinosa, G. P. (1992). Diamagnetism in the normal state of YBa2Cu3O7. Physical Review B, 45(14), 8074-8084. https://doi.org/10.1103/PhysRevB.45.8074
Walstedt, R. E. ; Bell, R. F. ; Schneemeyer, Lynn ; Waszczak, J. V. ; Espinosa, G. P. / Diamagnetism in the normal state of YBa2Cu3O7. In: Physical Review B. 1992 ; Vol. 45, No. 14. pp. 8074-8084.
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Walstedt, RE, Bell, RF, Schneemeyer, L, Waszczak, JV & Espinosa, GP 1992, 'Diamagnetism in the normal state of YBa2Cu3O7', Physical Review B, vol. 45, no. 14, pp. 8074-8084. https://doi.org/10.1103/PhysRevB.45.8074

Diamagnetism in the normal state of YBa2Cu3O7. / Walstedt, R. E.; Bell, R. F.; Schneemeyer, Lynn; Waszczak, J. V.; Espinosa, G. P.

In: Physical Review B, Vol. 45, No. 14, 01.01.1992, p. 8074-8084.

Research output: Contribution to journalArticleResearchpeer-review

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Walstedt RE, Bell RF, Schneemeyer L, Waszczak JV, Espinosa GP. Diamagnetism in the normal state of YBa2Cu3O7. Physical Review B. 1992 Jan 1;45(14):8074-8084. https://doi.org/10.1103/PhysRevB.45.8074