2013/09/21 by Kazuki Matsui, Masashi Fujisawa, Matsui, Kazuki +17
Biochemistry, Genetics and Molecular Biology · Chemistry · Mathematics · Physics and Astronomy · #Antiferromagnetism #Condensed matter physics #Equilateral triangle #FOS: Physical sciences #Field (mathematics) #Geometry #Ground state #Hexagonal lattice #Magnetic field #Magnetization #Materials Science (cond-mat.mtrl-sci) #Mathematics #Molecular spectroscopy and chirality #Photosynthetic Processes and Mechanisms #Physics #Quantum mechanics #Spectroscopy and Quantum Chemical Studies #Spin (aerodynamics) #Spin structure #Spins #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.1309.5472
SCES2013, Hongo, Tokyo
openalex publication_date 2013/09/21 · arxiv created 2013/10/08 · arxiv updated 2013/10/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
The gem-stone dioptase Cu6Si6O18.6H2O has a chiral crystal structure of equilateral triangular helices consisting of Cu-3d spins. It shows an antiferromagnetic order with an easy axis along c at TN = 15.5 K under zero field, and a magnetization jump at HC = 13.5 T when the field is applied along c-axis. By 29Si-NMR measurements, we have revealed that the high-field state is essentially the two sub-lattice structure, and that the component within ab-plane is collinear. The result indicates no apparent match with the geometrical pattern of helical spin chain.