journal article·2020-10

Observation and Ultrafast Dynamics of Inter‐Sub‐Band Transition in InAs Twinning Superlattice Nanowires

Mengfei Xue, Ming Li, Yisheng Huang, Runkun Chen, Yunliang Li, Jingyun Wang, Yingjie Xing, Jianjun Chen, Hugen Yan, Hongqi Xu, Jianing Chen

Advanced Materials· Volume 32· Issue 40
Publisher page

Abstract

Abstract A variety of infrared applications rely on semiconductor superlattices, including, notably, the realization of high‐power, compact quantum cascade lasers. Requirements for atomically smooth interface and limited lattice matching options set high technical standards for fabricating applicable heterostructure devices. The semiconductor twinning superlattice (TSL) forms in a single compound with periodically spaced twin boundaries and sharp interface junctions and can be grown with convenient synthesis methods. Therefore, employing semiconductor TSL may facilitate the development of optoelectronic applications related to superlattice structures. Here, it is shown that InAs TSL nanowires generate inter‐sub‐band transition channels due to the band projection and the Bragg‐like electron reflection. The findings reveal the physical mechanisms of inter‐sub‐band transitions in TSL structure and suggest that TSL structures are promising candidates for mid‐infrared optoelectronic applications.
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Research context

OpenAlex topics: Semiconductor Quantum Structures and Devices · Nanowire Synthesis and Applications · Advanced Semiconductor Detectors and Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Physics Chinese Academy of Sciences and Beijing National Laboratory for Condensed Matter Physics P.O. Box 603 Beijing 100190 China

School of Physical Sciences University of Chinese Academy of Sciences Beijing 100049 China

Beijing Key Laboratory of Quantum Devices Key Laboratory for Physics and Chemistry of Nanodevices and Department of Electronics Peking University Beijing 100871 China

State Key Laboratory for Mesoscopic Physics Department of Physics Collaborative Innovation Center of Quantum Matter Peking University Beijing 100871 China

Collaborative Innovation Center of Extreme Optics Shanxi University Taiyuan 030006 China

State Key Laboratory of Surface Physics and Department of Physics and Key Laboratory of Micro and Nano‐Photonic Structures (Ministry of Education) Fudan University Shanghai 200433 China

Beijing Academy of Quantum Information Sciences Beijing 100193 China

Songshan Lake Materials Laboratory Dongguan 523808 China

Funding

National Basic Research Program of China · National Natural Science Foundation of China

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