Nuclear spin-lattice relaxation of single crystal Sr14Cu 24O41

S. Ohsugi, S. Matsumoto, Y. Kitaoka, M. Matsuda, M. Uehara, T. Nagata, J. Akimitsu

Research output: Contribution to journalArticlepeer-review

Abstract

Nuclear spin-lattice relaxation rate T1-1 has been measured for the ladder sites of two single crystals Sr14Cu 24O41 (Sr14-A,B) by 63Cu NMR/NQR. The hole localization around 100 K appears as a peak in the T variation of T 1-1(NQR). On the other hand, it is suppressed in the T1-1(NMR) data under the magnetic field H ∼ 11 T, and a new peak appears around 20 K. T1-1(NMR) around the peak is more enlarged for Sr14-B than for Sr14-A. Hence, holes on the ladders of Sr14-B tend to be more localized. This is considered to be an origin for the occurrence of the magnetic order in Sr14-B under H ∼ 11 T.

Original languageEnglish
Pages (from-to)9-14
Number of pages6
JournalHyperfine Interactions
Volume159
Issue number1-4
DOIs
StatePublished - Dec 2004
Externally publishedYes

Funding

This work was supported by CREST (Core Research for Evolutional Science and Technology) of Japan Science and Technology Corporation (JST) and also partly by the COE Research (10CE2004) and (09440138) in a Grant-in-Aid for Scientific Research from the Ministry of Education, Sports, Science, and Culture of Japan.

Keywords

  • Cu NMR/NQR
  • Magnetic ordering
  • Nuclear spin-lattice relaxation
  • Spin ladder
  • SrCuO

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