Spin Fluctuation in Heavy Fermion CeRu₂Si₂
Kadowaki, Hiroaki · Sato, Masugu · Kawarazaki, Shuzo
Original · EN
Spin fluctuations of the archetypal heavy-fermion compound CeRu₂Si₂ have been investigated by neutron scattering in an entire irreducible Brillouin zone. The dynamical susceptibility is remarkably well described by the self-consistent renormalization (SCR) theory of the spin fluctuation in a phenomenological way, proving the effectiveness of the theory. The present analysis using the SCR phenomenology has allowed us to determine fourteen exchange constants, which show the long-range nature of the Ruderman-Kittel-Kasuya-Yosida interaction.
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