Dynamics of multipoles and neutron scattering spectra in quadrupolar ordering phase of CeB6

Journal of the Physical Society of Japan

Volumn 72, Issue 5, 2003, Pages 1216-1225

  Shiina, Ryousuke ^a   Shiba, Hiroyuki ^b   Thalmeier, Peter ^c   Takahashi, Atsushi ^d   Sakai, Osamu ^a  

^a TOKYO METROPOLITAN UNIVERSITY   (Japan)

^b KOBE UNIVERSITY   (Japan)

^c MAX PLANCK INSTITUTE FOR CHEMICAL PHYSICS OF SOLIDS   (Germany)

^d INST OF PHYS AND CHEMICAL RESEARCH   (Japan)

Author keywords

Dynamics; Excitation; Magnetic field; Multipole; Quadrupole

Indexed keywords

BORON DERIVATIVE; CERIUM;

ARTICLE; BOSON; CALCULATION; CHEMICAL INTERACTION; CHEMICAL STRUCTURE; DIPOLE; DISPERSION; DYNAMICS; ENERGY; EXCITATION; HYPOTHESIS; MAGNETIC FIELD; MATHEMATICAL MODEL; MEASUREMENT; NEUTRON SCATTERING; PARAMETER; PHASE TRANSITION; SPECTRUM; TECHNIQUE;

EID: 0037525620     PISSN: 00319015     EISSN: None     Source Type: Journal    
DOI: 10.1143/JPSJ.72.1216     Document Type: Article

References (22)

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11. O = 0.0 and h = 2.4 in the model (4.1) in the present paper, is reproduced by the HP method. Compared with HP, the RPA results involve additional branches corresponding to the transition between the excited states. Those processes are relevant only at finite temperatures.
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14. 3 to the MF level scheme. Note, however, that the initial choice of the unitary transform U is arbitrary in the present theory. It is introduced only to project out the classical ground state minimizing the energy, as discussed in §3. Otherwise the choice of U does not affect the final results for the excitation energies and the intensities of the spectra.
15. 0 is reducible, as the symmetry of possible multipolar fluctuations.
16. ;ν, is the reflection with respect to the (001) plane.
17. ν, in all the field directions, which can distingush a part of multipoles as shown in Table I. The dynamical fluctuations with different parity under V can coexist in a single excitation mode, though nonunitary operation usually gives a restriction on the phases of the fluctuations.
18. k within the linear approximation. Therefore the symmetry at k = 0 can be applied to all k in this case.
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22. 6 is the interaction with conduction electrons. Although Γ is assumed as a constant in this work, it should depend on momentum, energy and magnetic field through the microscopic mechanism, to be realistic.