Numerical-Diagonalization Study of Spin Gap Issue of the Kagome Lattice Heisenberg Antiferromagnet
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概要
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We study the system size dependence of the singlet--triplet excitation gap in the S=1/2 kagome-lattice Heisenberg antiferromagnet by numerical diagonalization. We successfully obtain a new result of a cluster of 42 sites. The two sequences of gaps of systems with even-number sites and that with odd-number sites are separately analyzed. Careful examination clarifies that there is no contradiction when we consider the system to be gapless.
- 2011-05-15
著者
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Sakai Toru
Japan Atomic Energy Agency (jaea)
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Nakano Hiroki
Graduate School And Faculty Of Science Himeji Institute Of Technology
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Sakai Toru
Japan Atomic Energy Agency, SPring-8, Sayo, Hyogo 679-5148, Japan
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