Spin Dynamics of 4fElectrons in CeB6Studied by Muon Spin Relaxation

Kadono, R.; Higemoto, Wataru; Koda, A.; Kakuta, K.; Ohishi, Kazuki; Takagiwa, Hiroyuki; Yokoo, Tetsuya; Akimitsu, Jun

doi:10.1143/jpsj.69.3189

Cited by 10 publications

(11 citation statements)

References 12 publications

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“…In general, pure electric quadrupole ordering generates no additional local magnetic field under a ZF. A similar lack of variation of the muon spin relaxation in quadrupole ordering states is observed in UCu 2 Sn (Ferroquadrupole (FQ) ordering), 7 CeB 6 (Antiferroquadrupole (AFQ) ordering), 8 and PrTi 2 Al 20 (AFQ ordering). 6 Therefore, we conclude that the phase transition at 0.11 K is most probably due to pure quadrupole ordering.…”

Section: Resultssupporting

confidence: 59%

Multipole and superconducting state in PrIr2Zn20probed by muon spin relaxation

et al. 2012

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We performed muon spin rotation and relaxation (μSR) measurements in the caged-structure heavy-fermion system PrIr 2 Zn 20 to elucidate its magnetic and superconducting properties. Temperature-independent μSR spectra were observed below 1 K, indicating that the phase transition at 0.11 K is of a nonmagnetic origin, most probably pure quadrupole ordering. In the superconducting phase, no sign of unconventional superconductivity, such as superconductivity with broken time-reversal symmetry, was seen below T c = 0.05 K. We also observed spontaneous muon spin precession in zero field in the paramagnetic phase below 15 K, suggesting that unusual coupling between 141 Pr nuclei and muons is realized in PrIr 2 Zn 20 .

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Section: Resultssupporting

confidence: 59%

Multipole and superconducting state in PrIr2Zn20probed by muon spin relaxation

et al. 2012

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“…21 Besides the indirect support for the predicted AFQ order given by macroscopic data, neutron-scattering, 9,22 resonance methods ͓NMR, 23 EPR ͑Refs. 24 and 25͔, and muon spin rotation, 26,27 the AFQ sublattices were also directly observed by x-ray scattering at synchrotron beamlines. [28][29][30][31][32][33][34] On lowering the temperature, at T Q the intensity of resonant x-ray scattering starts to increase in the ͓ 1 2 1 2 1 2 ͔ direction 28 consistent with the predicted AFQ order, and the temperature dependence of the AFQ order parameter could be described as…”

Section: Introductionmentioning

confidence: 81%

“…The onset of the T dependence in the SR data well above T Q , up to Ϸ10 K, confirmed the presence of some precursory effect in the PM phase, as indicated also in previous work. 37 Previous SR data also indicated 27 that at the weak B = 0.01 T field the fluctuation rate c −1 of the local magnetic fields in the PM phase correlates well with an assumed Kondo-type resistivity ͑T͒. Recent measurements 4 show, however, a temperature dependence ϰ T −0.4 in this phase.…”

Section: Introductionmentioning

confidence: 91%

“…The reason for this paradox, as conjectured in Ref. 27, lies in the fact that this result was obtained without accounting for the variation of the strength of the hyperfine coupling between the + and the ion-electron system for T Ͻ T Q .…”

Section: Introductionmentioning

confidence: 96%

“…4,5 As to the dynamics of the magnetic moments near and below T Q , no singular behavior of the SR relaxation rate was found at the transition. Previous work 27 seemed to indicate that c decreases as the temperature goes below T Q but this behavior would be difficult to understand. The reason for this paradox, as conjectured in Ref.…”

Section: Introductionmentioning

confidence: 97%

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Spin dynamics inCeB6studied by muon spin relaxation

et al. 2010

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The dynamics of magnetic fluctuations in the paramagnetic and antiferroquadrupolarly ͑AFQ͒ ordered phases of single crystal CeB 6 was investigated by means of muon spin relaxation experiments. Applied magnetic fields up to 2.5 T were used. Since in the AFQ phase the contact hyperfine coupling that contributes to the fluctuating field amplitudes at the three d-type interstitial muon sites strongly depends on the temperature and the applied field, as shown by the corresponding Knight-shift results, this feature was taken into account in determining the magnetic fluctuation rates. The extracted correlation time c of the magnetic fluctuations depends only weakly on the applied field, its temperature dependence demonstrates an accelerated slowing down of the spin dynamics in parallel with the development of the AFQ order.

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