Phase coherence and energy relaxation in epitaxial graphene under microwave radiation
Phase coherence and energy relaxation in epitaxial graphene under microwave radiation
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DOI：
10.1063/1.4819726
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发表时间：
2013-08-26
影响因子：
4
通讯作者：
Antonov, V.
中科院分区：
文献类型：
--
作者：
Eless, V.;Yager, T.;Antonov, V.
我们已经进行了低温磁输运测量单层外延石墨烯在微波辐射下提取的辐射诱导的有效温度，能量弛豫，和退相时间。我们确定，石墨烯样品的响应完全是测热的，至少高达170 GHz。动态失相，即，AC电磁场的时间反演对称性破坏效应而不是通过加热来介导的，在太赫兹频率范围内以及在具有较长相位相干时间的样本中可能变得显著。
We have performed low-temperature magnetotransport measurements on monolayer epitaxial graphene under microwave radiation and extracted the radiation-induced effective temperatures, energy relaxation, and the dephasing times. We established that the response of the graphene sample is entirely bolometric at least up to 170 GHz. Dynamic dephasing, i.e., the time-reversal symmetry breaking effect of the ac electromagnetic field rather than mediated by heating, may become significant in the terahertz frequency range and in samples with longer phase coherence time.