Magnetic excitations in electron-mass-enhanced semiconductors Ce3Co4Sn13 and Ce3Rh4Sn13
We propose inelastic cold-neutron scattering experiments to investigate spin fluctuations of Ce3Co4Sn13 and Ce3Rh4Sn13, which show heavy-fermion (HF) states at low temperatures subsequent to charge-density-wave formations at 160 and 352 K, respectively. The semiconducting behaviors are enhanced below approximately 20 K, while the effective electron masses are pointed out to become large due to electronic correlation. The experiments are aimed at investigating characteristics of spin dynamics relevant to the HF state unexpectedly coexisting with the gapped electronic state. This study must reveal a new dual nature between localized and itinerant electrons in the correlated f-electron systems.
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IWASA Kazuaki; MIGNOT Jean Michel; RAYMOND Stephane; STEFFENS Paul and SUYAMA Kazuya. (2015). Magnetic excitations in electron-mass-enhanced semiconductors Ce3Co4Sn13 and Ce3Rh4Sn13. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-05-623
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