NMR Study on Spin Gap in Spin Ladder Sr_<14>Cu_<24>O_<41>

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概要

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• We have investigated spin dynarnics of both the ladder and the chain sites in SI14CU24O4] byCu-N[VIR and Cu-NQR. From the NMR shift, Kspin) and ntrclear spin-lattice relaxation time,T3 , the energy gaps in the spin excitation spectrtrna are confirnaed to be A : 140 K for the chainsite and A : 470K for the ladder site for SIl4CU24O41. Doping effects on the spin gaps andelectric field gradient at the Ctm sites were also investigated by the substituting of Ca, Y and Lafor Sr. The spin gap of the ladder site decreases with increasing x for Srj,j .Cl.Cll24O41 andseerns to collapse at around x : 13 for Ca substitution.

• 社団法人日本物理学会の論文
• 1996-11-15

著者

• KATO Masatsune

  Department of Applied Physics, Graduate School of Engineering, Tohoku University

• KOIKE Yoji

  Department of Applied Physics, Graduate School of Engineering, Tohoku University

• Masaki Kato

  Department Of Chemistry Graduate School Of Science Kyoto University

• TSUJI Shigenari

  Department of Quantum Matter, ADSM, Hiroshima University

• Koike Yoji

  Department Applied Physics Graduate School Of Engineering Tohoku University

• TSUJI Shigenori

  Department of Quantum Matter, ADSM, Hiroshima University

• Tsuji Shigenori

  Cryogenic Center Hiroshima University

• Susaki Tomofumi

  Department Of Physics And Department Of Complexity Science And Engineering University Of Tokyo:(pres

• Kato Masatsune

  Department Of Applied Physics Faculty Of Engineering Tohoku University

• Tsuji S

  Department Of Quantum Matter Adsm Hiroshima University

• KUMAGAI Ken-ichi

  Department of Physics,Faculty of Science,Hokkaido University

• Kato Mayumi

  Institute For Solid State Physics University Of Tokyo

• Kato M

  Institute For Solid State Physics University Of Tokyo

• Kumagai Ken-ichi

  Department Of Chemistry College Of Science And Engineering Aoyama Gakuin University

• TSUJI Sigenori

  Department of Physics,Graduate school of Science,Hokkaido University

• Kumagai Ken-ichi

  Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University

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