Journal
LOW TEMPERATURE PHYSICS
Volume 37, Issue 3, Pages 220-225Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3573665
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Funding
- Russian Foundation for Basic Research [09-02-01389]
- Division of physical sciences of the Russian Academy of Sciences [09-T-2-1014]
- FTsP Scientific and science-teaching staff of innovative Russia [02.740.11.0217]
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An anomalous nonmonotonic contribution to the temperature dependence of the electron heat capacity of mercury selenide is detected. This is explained in terms of hybridized electronic states on donor impurities. The observed effect is described by a theory of electron heat capacity based on a quantum Fermi-liquid approach including localization and electron-electron interactions. A quantitative interpretation of the experimental dependences yields values for the parameters of the hybridized states that are consistent with those known from other experiments. A new parameter characterizing the electron-electron interaction in the hybridized states is also found. (C) 2011 American Institute of Physics. [doi:10.1063/1.3573665]
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