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Nakatsuji, Satoru*; Kuga, Kentaro*; Kimura, Kenta*; Satake, Ryuta*; Katayama, Naoyuki*; Nishibori, Eiji*; Sawa, Hiroshi*; Ishii, Rieko*; Hagiwara, Masayuki*; Bridges, F.*; et al.
Science, 336(6081), p.559 - 563, 2012/05
Times Cited Count：114 Percentile：95.24(Multidisciplinary Sciences)Frustrated magnetic materials can remain disordered to the lowest temperatures. Such is the case for Ba
CuSb
O
, which is magnetically anisotropic at the atomic scale but curiously isotropic on mesoscopic length and time scales. We find that the frustration on the triangular lattice is imprinted in a nanostructured honeycomb lattice of Cu
ions that resists a coherent static Jahn-Teller distortion. The resulting two-dimensional random-bond spin-1/2 system on the honeycomb lattice has a broad spectrum of spin-dimer like excitations and low-energy spin degrees of freedom that retain.
S
(A = Cd, Mg) probed by 
SRHigemoto, Wataru; Ito, Takashi; Koda, Akihiro*; Iritani, Kenshi*; Halim, M.*; Nakatsuji, Satoru*
no journal, ,
Varieties of magnetic states are seen in spinel structural magnets due to spin frustration effect. In particular, much attention is paid on recent study on pyrochlore structural magnet with rare-earth elements because interesting spin state, spin ice or other state, is observed. We have studied on spinel magnet AYbS to clarify the magnetic ground state by means of muon spin relaxation method. In our measurement, static magnetic ordering state was clearly observed.
Se (A=Cd, Mg) probed by SRHigemoto, Wataru; Ito, Takashi; Iritani, Kenshi*; Halim, M.*; Nakatsuji, Satoru*
no journal, ,
A spinel structural system shows a variety of the magnetic state due to its frustration effect. Up to now, we have studied the magnetic ground state of spinel structural system AYbS(A=Cd, Mg) by using muon spin relaxation method and observed the appearance of the magnetic ordering state below 2K in CdYbS and 1.5K in MgYbS. For systematic study of the frustration effect, we are measuring muon spin relaxation in same structural compounds AYbSe (A=Cd, Mg). In CdYbSe, the local magnetic field was observed below 2K. In the presentation, we will discuss the detail of the magnetic state.
