High field properties of geometrically frustrated magnets
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Accession number;05A0654537
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| Title;High field properties of geometrically frustrated magnets |
| Author;
ZHITOMIRSKY M. E.
(Commissariat A L'energie Atomique, Grenoble, Fra)
TSUNETSUGU HIROKAZU
(Kyoto Univ., Kyoto, Jpn)
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Journal Title;YITP
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Journal Code:L0911B
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ISSN:
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VOL.;NO.05-32;PAGE.22P(2005)
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| Figure&Table&Reference;FIG.10, REF.32 |
| Pub. Country;Japan |
| Language;English |
| Abstract;The properties of the ground-state phase transition near the saturation field are analyzed in the geometricallt frustrated Heisenberg antiferromagnet in an external magnetic field H. The quantum spin-1/2 kagome antiferromagnet is mapped to a hard hexagon gas on a triangular lattice. From the exact solution of the latter, a quantitative description of the magnetothermodynamics of the former. The phase diagram is obtained in the H-T plane, and the exact critical behavior is derived at the transition into a magnon crystal. The universal value of the entropy is calculated at the saturation field, and T- and H-dependence of the specific heat is clarified. |
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