muSR and NMR in f-electron non-Fermi liquid materials

Details muSR and NMR in f-electron non-Fermi liquid materials muSR and NMR in f-electron non-Fermi liquid materials

2002-07-18

arxiv.org/abs/cond-mat/0207461v1

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 4 figures. To be published in proceedings of muSR2002 (Physica B)

Scientific paper

10.1016/S0921-4526(02)01637-X

Magnetic resonance (muSR and NMR) studies of f-electron non-Fermi-liquid (NFL) materials give clear evidence that structural disorder is a major factor in NFL behavior. Longitudinal-field muSR relaxation measurements at low fields reveal a wide distribution of muon relaxation rates and divergences in the frequency dependence of spin correlation functions in the NFL systems UCu_{5-x}Pd_x and CePtSi_{1-x}Ge_x. These divergences seem to be due to slow dynamics associated with quantum spin-glass behavior, rather than quantum criticality as in a uniform system, for two reasons: the observed strong inhomogeneity in the muon relaxation rate, and the strong and frequency-dependent low-frequency fluctuation observed in U(Cu,Pd)_5 and CePt(Si,Ge). In the NFL materials CeCu_{5.9}Au_{0.1}, Ce(Ru_{0.5}Rh_{0.5})_2Si_2, CeNi_2Ge_2, and YbRh_2Si_2 the low-frequency weight of the spin fluctuation spectrum is much weaker than in the disordered NFL systems.

Affiliated with

Also associated with

No associations

Rating

muSR and NMR in f-electron non-Fermi liquid materials does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with muSR and NMR in f-electron non-Fermi liquid materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and muSR and NMR in f-electron non-Fermi liquid materials will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-209361