Autor: |
Adhikari, Sanjay, Ma, Yanjun, Fisk, Zachary, Xia, Jing, Eom, Chang-Beom, Cen, Cheng |
Rok vydání: |
2015 |
Předmět: |
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Druh dokumentu: |
Working Paper |
Popis: |
SmB6 is a promising candidate for topological Kondo insulator. In this letter, we report ultrafast carrier dynamics of SmB6. Two characteristic temperatures: T1=100 K and T2= 20 K are observed. T1 corresponds to the opening of the f-d hybridization gap revealed by an abrupt disappearance of terahertz f-band plasmon oscillations. Between T1 and T2, a phonon bottleneck effect dominates the photocarrier relaxation processes. Below T2, we observe the formation of in-gap states, which are strongly affected by optically injected hot electrons and the transient electron temperature change. |
Databáze: |
arXiv |
Externí odkaz: |
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