Nuclear resonance study of superconducting La1.82Ca1.18Cu2O6

Susumu Sasaki, Kyouichi Kinoshita, Azusa Matsuda

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Abstract

By high oxygen pressure synthesis, La1.82Ca1.18Cu2O6 was found to be superconducting (TC(zero) =49K). Using the conventional spin-echo method, a nuclear resonance experiment is conducted on a powder La1.82Ca1.18Cu2O6 sample. Nuclear Quadrupole Resonance (NQR) spectrum of 139La at 4.2K is obtained for the first time. The quadrupolar frequency (vQ) was estimated to be 5.9±0.1 MHz. The broad spectrum (the full width at half maximum intensity is about 2.5MHz) indicates that the electric field gradient (EFG) is distributed. Spin-lattice relaxation time (T1) is also discussed.

Original languageEnglish
Pages (from-to)1083-1084
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume185-189
Issue numberPART 2
DOIs
Publication statusPublished - 1991 Dec 1
Externally publishedYes

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ASJC Scopus subject areas

  • Condensed Matter Physics

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