a Novel Semiconductor Materials Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China; b National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
Abstract We have grown resonant tunnelling diodes (RTDs) with different sized emitter prewells and without a prewell. The current－voltage (I－V) characteristics of them in different magnetic fields were investigated. Two important phenomena were observed. First, a high magnetic field can destroy the plateau-like structure in the I－V curves of the RTD. This phenomenon is ascribed to the fact that the high magnetic field will demolish the coupling between the energy level in the main quantum well and that in the emitter quantum well or in the prewell. Secondly, the existence and size of the prewell are also important factors influencing the plateau-like structure.
Received: 20 October 2003
Revised: 03 February 2004
Accepted manuscript online:
Zhang Xiao-Xin (张晓昕), Zeng Yi-Ping (曾一平), Qiu Zhi-Jun (仇志军), Wang Bao-Qiang (王宝强), Zhu Zhan-Ping (朱占平) Observation of the current－voltage plateau-like structure of resonant tunnelling diode with prewells under different magnetic fields 2004 Chinese Physics 13 954
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
