我室王兵曾长淦张振宇侯建国教授研究组合作在prl上发表题为atomic structure, energetics...的论文-皇冠体育平台

时间:2011-03-14 01:49:00 来源:合肥微尺度物质科学国家实验室|http://www.hfnl.ustc.edu.cn

  2011年1月13日,我室王兵、曾长淦、张振宇、侯建国教授研究组合作在physical review letters上发表题为atomic structure, energetics, and dynamics of topological solitons in indium chains on si(111) surfaces的论文。

source: physical review letters volume: 106 issue: 2 article number: 026801 published: jan 13 2011

zhang h (zhang, hui)1,2, choi jh (choi, jin-ho)3, xu y (xu, yang)1,2, wang xx (wang, xiuxia)1,2, zhai xf (zhai, xiaofang)1,2, wang b (wang, bing)1,2, zeng cg (zeng, changgan)1,2,4, cho jh (cho, jun-hyung)3, zhang zy (zhang, zhenyu)4,5, hou jg (hou, j. g.)1,2,4
addresses:
1. univ sci & technol china, hefei natl lab phys sci microscale, hefei 230026, anhui peoples r china
2. univ sci & technol china, dept phys, hefei 230026, anhui peoples r china
3. hanyang univ, dept phys, seoul 133791, south korea
4. univ sci & technol china, icqd, hfnl, hefei 230026, anhui peoples r china
5. univ tennessee, dept phys & astron, knoxville, tn 37996 usa
e-mail addresses: cgzeng@ustc.edu.cn, chojh@hanyang.ac.kr

reprint address: zhang, h (reprint author), univ sci & technol china, hefei natl lab phys sci microscale, 96 jinzhai rd, hefei 230026, anhui peoples r china

abstract:
based on scanning tunneling microscopy and first-principles theoretical studies, we characterize the precise atomic structure of a topological soliton in in chains grown on si(111) surfaces. variable-temperature measurements of the soliton population allow us to determine the soliton formation energy to be similar to 60 mev, smaller than one-half of the band gap of similar to 200 mev. once created, these solitons have very low mobility, even though the activation energy is only about 20 mev; the sluggish nature is attributed to the exceptionally low attempt frequency for soliton migration. we further demonstrate local electric field-enhanced soliton dynamics.

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