title 正方格子量子スピン系で実現した113磁化 プラ … · title...
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Title <研究ノート>正方格子量子スピン系で実現した113磁化プラトー
Author(s) 辻本, 吉廣; 陰山, 洋; 網代, 芳民; 吉村, 一良
Citation 低温物質科学研究センター誌 : LTMセンター誌 (2008),12: 12-20
Issue Date 2008-06-01
URL https://doi.org/10.14989/153219
Right
Type Departmental Bulletin Paper
Textversion publisher
Kyoto University
DEF+*+678)GHIJK1/3LMNO<-
Realization of the 1/3 Magnetization Plateau in Square-Lattice Quantum Spin systems
PQRSTUVWTXYZ[TR\] ̂ÁÂÃ�Ã�ù ñ���� M�¸û
Yoshihiro Tsujimoto, Hiroshi Kageyama, Yoshitami Ajiro, Kazuyoshi Yoshimura Department of Chemistry, Graduate School of Science, Kyoto University
A new triple-layered perovskite (CuBr)Sr2Nb3O10 with the S = 1/2 square lattice, has been prepared by the topotactic ion-exchange reactions. Specific heat measurements in zero fields revealed two anomalies at low temperatures, suggesting the presence of successive phase transitions due to the competing ferro- and antiferromagnetic interactions in the layer. When the magnetic field is switched on, a novel phase appears which is characterized by a 1/3-plateau of the full magnetization, which has only been theoretically expected for triangular-based lattices.
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