中国物理B ›› 2005, Vol. 14 ›› Issue (7): 1444-1448.doi: 10.1088/1009-1963/14/7/031

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Thermodynamic properties of ultra-small metallic particles

程南璞1, 曾苏民2, 陈志谦3   

  1. (1)School of Materials Science and Engineering, Central South University,Changsha 410083, China;School of Materials Science and Engineering, Southwest Normal University,Chongqing 400715, China;; (2)School of Materials Science and Engineering, Central South University,Changsha 410083, China;School of Materials Science and Engineering, Southwest Normal University,Chongqing 400715, China;Southwest Aluminum Fabrication Plant, Chongqing 401326, China; (3)School of Materials Science and Engineering, Southwest Normal University,Chongqing 400715, China;
  • 收稿日期:2005-01-04 修回日期:2005-03-15 出版日期:2005-06-20 发布日期:2005-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10147207), the Chongqing Commission of Science and Technology.

Thermodynamic properties of ultra-small metallic particles

Cheng Nan-Pu (程南璞)ab, Zeng Su-Min (曾苏民)abc, Chen Zhi-Qian (陈志谦)b   

  1. a School of Materials Science and Engineering, Central South University, Changsha 410083, Chinab School of Materials Science and Engineering, Southwest Normal University, Chongqing 400715, China; c Southwest Aluminum Fabrication Plant, Chongqing 401326, China
  • Received:2005-01-04 Revised:2005-03-15 Online:2005-06-20 Published:2005-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10147207), the Chongqing Commission of Science and Technology.

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摘要： The thermodynamic properties of ultra-small metallic particles within an ensemble are affected by the level distribution and the level correlation between the discrete electronic energy levels. The specific heat and spin susceptibility of ultra-small metallic particles in the canonical ensemble with an odd or even number of electrons are numerically calculated by considering the effects of the level statistics, and their behaviour at low and high temperatures is also discussed. As an example, the specific heat and spin susceptibility of nano-Al particles are calculated numerically in this paper.

关键词: ultra-small metallic particles, specific heat, spin susceptibility, level statistics

Abstract: The thermodynamic properties of ultra-small metallic particles within an ensemble are affected by the level distribution and the level correlation between the discrete electronic energy levels. The specific heat and spin susceptibility of ultra-small metallic particles in the canonical ensemble with an odd or even number of electrons are numerically calculated by considering the effects of the level statistics, and their behaviour at low and high temperatures is also discussed. As an example, the specific heat and spin susceptibility of nano-Al particles are calculated numerically in this paper.

Key words: ultra-small metallic particles, specific heat, spin susceptibility, level statistics

中图分类号: 

  • 65.80.+n
65.40.Ba (Heat capacity)