139La NQR study of electronic states in metallic compounds (La1-xSrx)2CuO4

Tatsuo Kobayashi, Shinji Wada, Yoshio Kitaoka, Kunisuke Asayama, Kiichi Amaya

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Abstract

We measured the temperature dependence of the nuclear spin-lattice relaxation time T1 of 139La in metallic compounds (La 1-xSrx)2CuO4 with x=0.045, 0.075, 0.10 (highTc superconductors) and x=0.15 (nonsuperconductor) by NQR experimentation. T1 for x=0.\5 was found to conform to the Korringa relation (T1T=const.) sufficiently, while the T, for x=0.075 and 0.10 in the normal state showed slightly stronger temperature dependence and were shorter than that for x=0.15, in spite of the increase of hole concentration with increasing x. Fluctuations of Cu d-spins are considered to play an important role for T1 in superconducting compounds. The relaxation behavior in the compound with x=0.045 is also discussed.

Original languageEnglish
Pages (from-to)779-782
Number of pages4
JournalJournal of the Physical Society of Japan
Volume58
Issue number3
Publication statusPublished - Mar 1989
Externally publishedYes

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temperature dependence
experimentation
electronics
spin-lattice relaxation
nuclear spin
relaxation time

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

139La NQR study of electronic states in metallic compounds (La1-xSrx)2CuO4. / Kobayashi, Tatsuo; Wada, Shinji; Kitaoka, Yoshio; Asayama, Kunisuke; Amaya, Kiichi.

In: Journal of the Physical Society of Japan, Vol. 58, No. 3, 03.1989, p. 779-782.

Research output: Contribution to journalArticle

Kobayashi, T, Wada, S, Kitaoka, Y, Asayama, K & Amaya, K 1989, '139La NQR study of electronic states in metallic compounds (La1-xSrx)2CuO4', Journal of the Physical Society of Japan, vol. 58, no. 3, pp. 779-782.
Kobayashi, Tatsuo ; Wada, Shinji ; Kitaoka, Yoshio ; Asayama, Kunisuke ; Amaya, Kiichi. / 139La NQR study of electronic states in metallic compounds (La1-xSrx)2CuO4. In: Journal of the Physical Society of Japan. 1989 ; Vol. 58, No. 3. pp. 779-782.
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