Low-Temperature Properties of the Randomly Depleted Heisenberg Ladder

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概要

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• Low-temperature thermodynamic properties of the spin- 4 Heisenberg ladder system with non-unagnetic impurities are discussed using an effective Hamiltonian for the impvurity-indtuced SPIIISin the background of a spin liquid with a gap. It is shown that the unnform susceptibilityshows Curie-like behavior in high-, intermediate-, and low-temperature regimes, with three dif-ferent Curie constants. The ratio of specific heat to temperattmre, CAT, is divergent in thelow-temperature limit, reflecting a singular distribution of the effective couplings among theimpurity spins.

• 社団法人日本物理学会の論文
• 1996-08-15

著者

• Furusaki Akira

  Yukawa Institute For Theoretical Physics Kyoto University

• Sigrist Manfred

  Yukawa Institute For Theoretical Physics Kyoto University:on Leave From Theoretische Physik Eth-hong

• Sigrist Manfred

  Yukawa Institute For Theoretical Phyasics Kyoto University

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