Is AgCrSe2 really a liquid-like thermoelectric?
The development of next generation thermoelectrics requires materials with extremely low thermal conductivities. Recently much attention has focussed on the so-called Phonon-Liquid Electron-Crystal concept where superionic diffusion is supposed to prevent transverse acoustic phonons from propagating, leading to ultra-low thermal conductivity. It has been suggested that AgCrSe2 is a PLEC material on the basis on unpolarised neutron-TOF data. However, there is a strong possibility that scattering attributed to diffusion is, in fact, magnetic in origin. This proposal will probe the origin of this scattering and determine if AgCrSe2 is really a liquid-like thermoelectric.
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VONESHEN David; ARSLAN Sercan; GOFF Jonathan P.; PERRY Robin; S.Uthayakumar and STEFFENS Paul. (2018). Is AgCrSe2 really a liquid-like thermoelectric?. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.7-01-475