Quasielastic magnetic scattering of neutrons at the systems with heavy fermions

TL;DR

This paper presents a theoretical model for quasielastic neutron scattering in heavy fermion systems with spin liquid states, successfully reproducing experimental scattering profiles and revealing oscillatory behavior due to Fermi statistics.

Contribution

The study introduces a theoretical framework for quasielastic magnetic neutron scattering in spin liquids with RVB correlations, highlighting the impact of Fermi statistics on scattering oscillations.

Findings

Reproduces experimental quasielastic peak shape

Shows oscillations in scattering cross section due to Fermi statistics

Provides theoretical insight into neutron scattering in heavy fermion systems

Abstract

The theory of the quasielastic magnetic scattering of neutrons at the spin liquid with RVB (resonance valence bonds) correlations is presented. Calculations demonstrate that the dependence of the scattering cross section on the energy transfer reproduces experimental shape of quasielastic peak in heavy fermion systems. It is shown that Fermi statistics of the spin liquid elementary excitations leads to the oscillations of the quasielastic scattering total cross section as a function of the momentum transfer.