Electronic disorder of P- and B-doped Si at the metal–insulator transition investigated by scanning tunnelling microscopy and electronic transport
Electronic disorder of P- and B-doped Si at the metal–insulator transition investigated by scanning tunnelling microscopy and electronic transport
复制标题
通过扫描隧道显微镜和电子输运研究金属绝缘体转变中 P 和 B 掺杂 Si 的电子无序
DOI:
10.1088/1367-2630/15/5/055009
复制
发表时间:
2013
影响因子:
3.3
通讯作者:
H. von Löhneysen
中科院分区:
文献类型:
--
作者:
Christoph Sürgers;M. Wenderoth;K. Löser;J.K. Garleff;R.G. Ulbrich;M. Lukas;H. von Löhneysen
The (111)-2× 1 surface of in situ cleaved heavily P-or B-doped Si is investigated by scanning tunnelling microscopy and spectroscopy at room temperature and at low temperature. P atoms have been identified on different sites of the Si (111)-2× 1 surface by their characteristic voltage-dependent contrast for positive as well as negative buckling of the π-bonded chains. The distributions of dopants per surface area and of nearest-neighbour distances are found to be in agreement with a random arrangement of dopants in Si up to doping levels well above the metal–insulator transition. In addition, P atoms have been identified by their depth-dependent contrast down to the third layer beneath the surface with a volume density in agreement with the bulk doping density. The random electronic disorder supports the view of an Anderson transition driven by disorder close to the critical concentration or critical uniaxial stress.
登录
查看更多内容
影响因子:
8.6
作者:
C. Wittneven;R. Dombrowski;M. Morgenstern;R. Wiesendanger
通讯作者:
C. Wittneven;R. Dombrowski;M. Morgenstern;R. Wiesendanger
影响因子:
1
作者:
Z. Ayduğan;Ç. Kaderoğlu;B. Alkan;M. Çakmak
通讯作者:
M. Çakmak
影响因子:
8.6
作者:
M. Paalanen;T. Rosenbaum;G. Thomas;R. Bhatt
通讯作者:
R. Bhatt
影响因子:
3.7
作者:
Curson, NJ;Schofield, SR;Clark, RG
通讯作者:
Clark, RG
影响因子:
3.7
作者:
K. Löser;M. Wenderoth;T.K.A. Spaeth;J.K. Garleff;R.G.Ulbrich;M. Pötter;M. Rohlfing
通讯作者:
M. Rohlfing