Intragap states in
- 15 April 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 61 (15) , 9906-9909
- https://doi.org/10.1103/physrevb.61.9906
Abstract
The results of wide-range measurements of the low-frequency, rf, and microwave conductivity in the typical mixed-valent narrow-gap semiconductor samarium hexaboride are presented. The established steplike anomaly of conductivity σ(ν) around 10 GHz is discussed in the framework of the exciton-polaron approach and coherent-state formation in at helium temperatures. A combined analysis of the dc- and wide-range ac-transport characteristics and dielectric permittivity data at low temperatures is developed.
Keywords
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