Quasi-elastic scattering in the stoichiometric non-Fermi liquid system CeCo2Ga8
The quantum critical point (QCP) governs many novel dynamics at finite temperature with a quantum critical fluctuation region. For strong correlated heavy-fermion materials in this region, the energy of spin fluctuations scales with temperature, called ω/T scaling, where the critical exponent give important information about the type of QCP. However, most of present study on QCP in heavy fermions focus on the quasi-2D or 3D systems, and high pressure or magnetic field have to be applied to induce the QCP, giving big challenge to inelastic neutron scattering.A recently stoichiometric quasi-1D Kondo lattice system CeCo2Ga8, suggest possible naturally non-Fermi-liquid behaviors and possible in the vicinity of QCP. To study the magnetic excitations in this material, we have proposed an experiment at IN5 and done recently (Proposal No.: 4-03-1734).We have found a typical quasi-elastic signal of spin dynamics. Due to Due to limit beamtime (4 days), we were not able to get more data above 10 K to finish the w/T scaling. Thus we request continue beamtime on CeCo2Ga8 at IN5 for more measurement up to 300 K.
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D.T. Adroja; Amitava Bhattacharyya; KOZA Michael Marek; Huiqian Luo; OLLIVIER Jacques and Xingyu Wang. (2020). Quasi-elastic scattering in the stoichiometric non-Fermi liquid system CeCo2Ga8. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-03-1742
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