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arXiv 1105.0641cond-mat.mes-hall
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金属单壁碳纳米管中的测热和非测热射频探测

Bolometric and non-bolometric radio frequency detection in a metallic single-walled carbon nanotube

Daniel F. Santavicca, Joel D. Chudow, Daniel E. Prober, Meninder S. Purewal, Philip Kim

摘要:

我们表征射频检测在一个高品质的金属单壁碳纳米管。在77 K的浴温下,只能看到测辐射热(热)检测。在4.2 K的浴温和低偏置电流下,响应是由于非欧姆接触的电非线性。在较高的偏置电流,接触恢复欧姆行为和观察到的响应与计算的热响应。预计在太赫兹频率下工作的热辐射响应,我们讨论了一些与开发基于碳纳米管的高频探测器相关的实际问题。

英文摘要:

We characterize radio frequency detection in a high-quality metallic single-walled carbon nanotube. At a bath temperature of 77 K, only bolometric (thermal) detection is seen. At a bath temperature of 4.2 K and low bias current, the response is due instead to the electrical nonlinearity of the non-ohmic contacts. At higher bias currents, the contacts recover ohmic behavior and the observed response agrees well with the calculated bolometric responsivity. The bolometric response is expected to operate at terahertz frequencies, and we discuss some of the practical issues associated with developing high frequency detectors based on carbon nanotubes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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