Search for metallic spin liquid state in the magnetically frustrated compound CePd1-xNixAl
Magnetic frustration is predicted to be a tune parameter for unconventional quantum criticality with a Kondo breakdown and a spin-liquid phase of localized 4f moments being decoupled from conduction electrons.Such geometrical frustration in Kondo lattices has been found in hexagonal systems crystallizing in the ZrNiAl structure.Particularly in CePdAl, the Kondo coupling, magnetic frustration, and quantum criticality are closely intertwined in this correlated metallic system, which suggest a Kondo-destroying QCP can exist in a stoichiometric heavy-fermion metal far away from any kind of magnetic order. Moreover, with the chemical pressure from Ni dopings, the system can be also tuned to non-fermi-liquid behavior without any magnetic ground state but strong residual frustration. Here we propose to do neutron scattering experiments on the highly doped CePd1-xNixAl with x=0.2, to search the frustration-dominated spin liquid state in the metallic material.
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Huiqian Luo; D.T. Adroja; BISWAS Pabitra K; CERMAK Petr; Johanna K. Jochum; LIU Chang; STEFFENS Paul and Xingyu Wang. (2019). Search for metallic spin liquid state in the magnetically frustrated compound CePd1-xNixAl. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-05-744
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