Novel field-induced quantum phase transition of the kagome-lattice antiferromagnet

Sakai, Toru; Nakano, Hiroki*

The magnetization process of the S=1/2 kagome-lattice quantum antiferromagnet is investigated using the numerical exact diagonalization up to 39-site clusters, in comparison with the triangular-lattice one. The finite-size scaling analysis indicates the "magnetization ramp" phenomenon, as a novel field-induced quantum phase transition, at 1/3 of the saturation magnetization in the kagome-lattice system, while the conventional 1/3 magnetization plateau in the triangular-lattice one.

Language	:	English
Journal	:	Journal of Physics; Conference Series
Volume	:	400
Number	:	3
Pages	:	p.032076_1 - 032076_4
Publication Year/Month	:	2012/12
Meeting title	:	26th International Conference on Low Temperature Physics (LT-26)
Held date	:	2011/08
Location (city)	:	Beijing
Location (country)	:	China
Patent information	:
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Paper URL	:	https://doi.org/10.1088/1742-6596/400/3/032076
DOI for research data	:
Keywords	:	no keyword
Research Facility	:	SPring-8(大型放射光施設)
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Article of JAEA R&D Review	:
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Registration No. : BB20110693
JAEA Abstracts No. : 45000872
Paper Submission No. : 19116

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