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Novel Phase Transitions in the Breathing Pyrochlore Lattice: 7Li-NMR on LiInCr4O8 and LiGaCr4O8
Yu Tanaka, Makoto Yoshida, Masashi Takigawa +2
We report 7Li-NMR studies on LiInCr4O8 and LiGaCr4O8, in which Cr3+ ions with spin 3/2 form a breathing pyrochlore lattice, a network of tetrahedra with alternating sizes. In LiInC…
NaCuMoO_4(OH) as a Candidate Frustrated J_1-J_2 Chain Quantum Magnet
Kazuhiro Nawa, Yoshihiko Okamoto, Akira Matsuo +9
In a frustrated J_1-J_2 chain with the nearest-neighbor ferromagnetic interaction J_1 and the next-nearest-neighbor antiferromagnetic interaction J_2, novel magnetic states such as…
Helical order and multiferroicity in the quasi-kagome system KCuAsO(OD)
Gøran J. Nilsen, Yoshihiko Okamoto, Hajime Ishikawa +7
Several Cu hydroxide minerals have recently been identified as candidate realizations of the kagome Heisenberg model. In this context, we have studied the distorted…
Kagome-Triangular Lattice Antiferromagnet NaBa2Mn3F11
Hajime Ishikawa, Tsuyoshi Okubo, Yoshihiko Okamoto +1
A new type of magnetically frustrated lattice is found in the layered fluoride NaBa2Mn3F11. A kagome-type array of regular triangles composed of Mn2+ ions (spin 5/2) deforms so as…