中国物理B ›› 2014, Vol. 23 ›› Issue (1): 17305-017305.doi: 10.1088/1674-1056/23/1/017305

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Mobility limited by cluster scattering in ternary alloy quantum wires

张恒, 杨少延, 刘贵鹏, 王建霞, 金东东, 李辉杰, 刘祥林, 朱勤生, 王占国   

  1. Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
    Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • 收稿日期:2013-03-19 修回日期:2013-04-28 出版日期:2013-11-12 发布日期:2013-11-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 91233111, 61274041, 11275228, 61006004, and 61076001), the National Basic Research Program of China (Grant No. 2012CB619305), and the High Technology R&D Program of China (Grant No. 2011AA03A101).

Mobility limited by cluster scattering in ternary alloy quantum wires

Zhang Heng (张恒), Yang Shao-Yan (杨少延), Liu Gui-Peng (刘贵鹏), Wang Jian-Xia (王建霞), Jin Dong-Dong (金东东), Li Hui-Jie (李辉杰), Liu Xiang-Lin (刘祥林), Zhu Qin-Sheng (朱勤生), Wang Zhan-Guo (王占国)   

  1. Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
    Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • Received:2013-03-19 Revised:2013-04-28 Online:2013-11-12 Published:2013-11-12
  • Contact: Yang Shao-Yan E-mail:sh-yyang@semi.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 91233111, 61274041, 11275228, 61006004, and 61076001), the National Basic Research Program of China (Grant No. 2012CB619305), and the High Technology R&D Program of China (Grant No. 2011AA03A101).

摘要: The mobility limited by cluster scattering in ternary alloy semiconductor quantum wire (QWR) is theoretically investigated under Born approximation. We calculate the screened mobility due to clusters (high indium composition InGaN) scattering in the InxGa1-xN QWR structure. The characteristics of the cluster scattering mechanism are discussed in terms of the indium composition of clusters, the one-dimensional electron gas (1DEG) concentration, and the radius of QWR. We find that the density, breadth of cluster, and the correlation length have a strong effect on the electron mobility due to cluster scattering. Finally, a comparison of the cluster scattering is made with the alloy-disorder scattering. It is found that the cluster scattering acts as a significant scattering event to impact the resultant electron mobility in ternary alloy QWR.

关键词: mobility, cluster scattering, quantum wire, one-dimensional electron gas

Abstract: The mobility limited by cluster scattering in ternary alloy semiconductor quantum wire (QWR) is theoretically investigated under Born approximation. We calculate the screened mobility due to clusters (high indium composition InGaN) scattering in the InxGa1-xN QWR structure. The characteristics of the cluster scattering mechanism are discussed in terms of the indium composition of clusters, the one-dimensional electron gas (1DEG) concentration, and the radius of QWR. We find that the density, breadth of cluster, and the correlation length have a strong effect on the electron mobility due to cluster scattering. Finally, a comparison of the cluster scattering is made with the alloy-disorder scattering. It is found that the cluster scattering acts as a significant scattering event to impact the resultant electron mobility in ternary alloy QWR.

Key words: mobility, cluster scattering, quantum wire, one-dimensional electron gas

中图分类号:  (Low-field transport and mobility; piezoresistance)

  • 73.50.Dn
73.21.Hb (Quantum wires)