Quantum Spin Liquid in the Kagome-Lattice Antiferromagnet and Related Systems

International Workshop on Itinerant-Electron Magnetism

Nakano, Hiroki^1 ; Sakai, Tôru^1,2

Graduate School of Material Science, University of Hyogo, Hyogo

678-1297, Japan^1

Japan Atomic Energy Agency, SPring-8, Hyogo

679-5148, Japan^2

关键词: Antiferromagnets;    Diagonalizations;    Field derivatives;    Kagome lattice;    Magnetic excitations;    Quantum spin liquid;    Related systems;    Scaling analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/868/1/012006/pdf
DOI  :  10.1088/1742-6596/868/1/012006

来源: IOP

【 摘 要 】

The S=1/2 kagome-lattice antiferromagnet is investigated using the numerical diagonalization up to the 42-spin cluster. The analysis of the field derivative of the magnetization at the zero magnetization indicates that the magnetic excitation ot the system is gapless. It is consistent with our previous finite-scaling analysis of the spin gap.