Incommensurate Structural Correlations in the Disordered Spin-Dimer State Induced by X-Ray and Electron Irradiation in CuIr2S4
Irradiation with ~10keV x rays or medium-energy electrons destroys long-range order of Ir spin dimers in CuIr2S4 while preserving the dimers locally. We find that as the order is destroyed, a new type of incommensurate structural correlations appears. This represents an intriguing example of order from disorder phenomenon, in which a previously unknown incommensurate order appears in the radiation-induced disordered state. These results suggest that two competing instabilities, one of which can be suppressed by radiation, are present in the system. Otherwise unrealized structural or electronic states can, therefore, be revealed in correlated systems by x-ray or electron irradiation.
V. D. Kiryukhin et al., "Incommensurate Structural Correlations in the Disordered Spin-Dimer State Induced by X-Ray and Electron Irradiation in CuIr2S4," Physical Review Letters, vol. 97, no. 22, American Physical Society (APS), Nov 2006.
The definitive version is available at http://dx.doi.org/10.1103/PhysRevLett.97.225503
Keywords and Phrases
Copper Compounds; Electron Energy Levels; Electron Irradiation; Electronic Structure; Radiation Effects; Electronic States; Radiation Induced Disorder; Structural Correlations; Dimers
International Standard Serial Number (ISSN)
Article - Journal
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