TY  - JOUR
AU  - Portnichenko, P. Y.
AU  - Demishev, S. V.
AU  - Semeno, A. V.
AU  - Ohta, H.
AU  - Cameron, A. S.
AU  - Surmach, M. A.
AU  - Jang, H.
AU  - Friemel, G.
AU  - Dukhnenko, A. V.
AU  - Shitsevalova, N. Yu.
AU  - Filipov, V. B.
AU  - Schneidewind, A.
AU  - Ollivier, J.
AU  - Podlesnyak, A.
AU  - Inosov, D. S.
TI  - Magnetic field dependence of the neutron spin resonance in CeB $_{6}$
JO  - Physical review / B
VL  - 94
IS  - 3
SN  - 2469-9950
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2016-03738
SP  - 035114
PY  - 2016
AB  - In zero magnetic field, the famous neutron spin resonance in the f-electron superconductor CeCoIn5 is similar to the recently discovered exciton peak in the nonsuperconducting CeB6. A magnetic field splits the resonance in CeCoIn5 into two components, indicating that it is a doublet. Here we employ inelastic neutron scattering (INS) to scrutinize the field dependence of spin fluctuations in CeB6. The exciton shows a markedly different behavior without any field splitting. Instead, we observe a second field-induced magnon whose energy increases with field. At the ferromagnetic zone center, however, we find only a single mode with a nonmonotonic field dependence. At low fields, it is initially suppressed to zero together with the antiferromagnetic order parameter, but then reappears at higher fields inside the hidden-order phase, following the energy of an electron spin resonance (ESR). This is a unique example of a ferromagnetic resonance in a heavy-fermion metal seen by both ESR and INS consistently over a broad range of magnetic fields.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000379717700004
DO  - DOI:10.1103/PhysRevB.94.035114
UR  - https://juser.fz-juelich.de/record/811237
ER  -