Fractional Magnetization Plateau in the Alternating Spin Heisenberg Chain

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概要

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• We sttrdy the S = 172 and S : l alternating sjcin Heisenberg chain xvitla tl?e next-nearestneighbor (NNN) interaction ,72 between ?aeighboring S : 172 spins, by trsitag the ntrnaaericaldiagonalizatiora naethod of a finite size systern. It is found that a fractional plateatt appears ;xtmagzaetization 772 : l./2 ira Line magnetization ctrrve for .72 >.72. : 0.106 i 0.001. Tlue phasetransition at .72. is characterized by the exponent o : l, wlaicla controls true critical behavior ofthe spin gap A as A x exp( -a/ (.72 - Jwc)"'). For Jw< ,72., the uaaodel at 772 : 172 is describedby the confornaal field theory witla ceuatral claarge c : 1 arad expor'xent 77 f'or the spirr correlatioraftrnction of the transverse cotnponent to a rnagnetic field is calctnlated.

• 社団法人日本物理学会の論文
• 1999-06-15

著者

• Kuramoto Tetsuji

  Department Of Physics Faculty Of Engineering Yokohama National University

• Kuramoto Tetsuji

  Department of Physics,Faculty of Engineering,Yokohama National University

関連論文

• Non-Linear Realization in Supersymmetric Theories : Particles and Fields
• Non-Linear Realization in Supersymmetric Theories. II : Particles and Fields
• An Infrared Fixed Point and Renormalizability of 2-Dim. O(4) Nonlinear σ-Model with Wess-Zumino Term : Particles and Fields
• Magnetization Plateau in the Frustrated Alternating Spin Chain(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Fractional Magnetization Plateau in the Alternating Spin Heisenberg Chain
• Magnetic and Critical Properties of Alternating Spin Heisenberg Chain in a Magnetic Field

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