Magnetic and Critical Properties of Alternating Spin Heisenberg Chain in a Magnetic Field

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概要

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• XVe study raaagnetic and criticsrl jcrojcerties of the alternating spin antif'erromagnetic Heisenberg chain w'ith S -:- 172 stnd l in a rnatgnetic field at T : O. The ntnnnerical diagonalizantionis applied to the systetaa Lip to 2N : 20 sites. Checking rntrumerically that magnetuc states witlathe taaagnetization per site rn obey a confor?aaal field theory xvith confortaaal anotnaly c = l f'orX/'1< an< 3/4, xve trse the finite-size scaling of the confornaal invariatnce to obtain a lIl21gl1(2tization ctrrve in the theruauod3xnamaaic lintait. In the ztaagnetization ctrrve a plateatu appears atrn : 174. XVe also calcttlate txvo critical expotaents 'rj and q' for 174< m< 3/4, xvhich controltlae asynajctotic behavior of the transverse atnd parallel spin correlation ftrnctions. We check therel?xtion 7777' : 1, which trniversally holds for a c : l conformal field theory.

• 1998-05-15

著者

• Kuramoto Tetsuji

  Department Of Physics Faculty Of Engineering Yokohama National University

• KURAMOTO Tetsuji

  Department of Physics,Fasulty 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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