Induced Hall-Like Current by Acoustic Phonons in Semiconductor Fluorinated Carbon Nanotube

• 作者: Cynthia Jebuni-Adanu Daniel Sakyi-Arthur Kofi W. Adu Kwadwo A. Dompreh Natalia G. Mensah Raymond Edziah Samuel Y. Mensah
• 来源期刊: 凝固态物理国际期刊(英文)
• 学科: 工学
• 关键词: Carbon NANOTUBE FLUORINATED Hall-Like CURRENT CYCLOTRON
• 年，卷（期）: ngtwlgjqkyw,（2）
• 页码范围: 71-87
• 页数: 17页
• 分类号: TB3

摘要

We show that Hall-like current can be induced by acoustic phonons in a nondegenerate, semiconductor fluorine-doped single-walled carbon nanotube (FSWCNT) using a tractable analytical approach in the hypersound regime ?(q is the modulus of the acoustic wavevector and is the electron mean free path). We observed a strong dependence of the Hall-like current on the magnetic field, H, the acoustic wave frequency, , the temperature, T, the overlapping integral, , and the acoustic wavenumber, q. Qualitatively, the Hall-like current exists even if the relaxation time does not depend on the carrier energy but has a strong spatial dispersion, and gives different results compared to that obtained in bulk semiconductors. For and , the Hall-like current is in the absence of an electric field and in the presence of an electric field at 300 K. Similarly, the surface electric field due to the Hall-like current is in the absence of an external electric field. In the presence of an external electric field, and for at 300 K. q and can be used to tune the Hall-like current and of the FSWCNT. This offers the potential for room temperature application as an acoustic switch or transistor, as well as a material for ultrasound current source density imaging (UCSDI) and AE hydrophone device in biomedical engineering.