Proton NMR studies on hydrogen-doped high-Tc superconductor

H. Niki, T. Higa, S. Tomiyoshi, M. Omori, T. Kajitani, T. Sato, T. Shinohara, T. Suzuki, K. Yagasaki, R. Igei

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7 Citations (Scopus)

Abstract

Proton NMR in YBa2Cu3O6.94Hx (x = 0.2 and 0.5) was carried out in order to obtain information about the behavior of the hydrogen and mechanism of the superconductivity. The hydrogen atoms are moving above 200 K but trapped in the crystal sites below 130 K. Below Tc, T1-1 shows an enhancement and sharp decrease with decreasing temperature. A phase-coherent pulsed spectrometer is employed to measure T1, T2 and inverse line width parameter T2 with a resonance frequency of 33 MHz. A bridge spectrometer is used for the measurements of the line width. A marginal spectrometer is used for the superconducting state of YH0.20 with frequency modulation and frequency sweep.

Original languageEnglish
Pages (from-to)672-674
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume90 pt 91
Publication statusPublished - 1990
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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