منابع مشابه
Symmetry of Magnetically Ordered Quasicrystals
The notion of magnetic symmetry is reexamined in light of the recent observation of long-range magnetic order in icosahedral quasicrystals [Charrier et al., Phys. Rev. Lett. 78, 4637 (1997)]. The relation between the symmetry of a magnetically ordered (periodic or quasiperiodic) crystal, given in terms of a “spin space group,” and its neutron diffraction diagram is established. In doing so, an ...
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M. H. Jung,* A. Alsmadi, H. C. Kim, Yunkyu Bang, K. H. Ahn, K. Umeo, A. H. Lacerda, H. Nakotte, H. C. Ri, and T. Takabatake National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA Department of Physics, New Mexico State University, Las Cruces, New Mexico 88003, USA Material Science Laboratory, Korea Basic Science Institute, Taejeon 305-333, Kor...
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The physical properties of agarose gel prepared under strong magnetic fields were investigated. The storage modulus was measured by the reflection method with an ultrasonic pulse. The measurement results of the gel's elasticity indicate that agarose gel has anisotropic properties. The elasticity and its anisotropy depend on the concentration of the gel and the magnetic field to which it is expo...
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Oxygen adsorption on Gd~0001! at 300 K leads to the formation of a well-ordered surface oxide with a characteristic occupied valence state, originating from hybridization between Gd 5d and O 2p states. This oxygen-induced state, which closely resembles the surface state of clean Gd~0001!, has a binding energy of '0.8 eV at Ḡ and hence permits a detailed investigation by photoelectron spectrosco...
متن کاملQuantum magnetic impurities in magnetically ordered systems.
We discuss the problem of a spin 1/2 impurity immersed in a spin S magnetically ordered background. We show that the problem maps onto a generalization of the dissipative two level system with two independent heat baths, associated with the Goldstone modes of the magnet, that couple to different components of the impurity spin operator. Using analytical perturbative renormalization group method...
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ژورنال
عنوان ژورنال: Solid State Phenomena
سال: 2007
ISSN: 1662-9779
DOI: 10.4028/www.scientific.net/ssp.131-133.327