Photoemission study of electronic structure evolution across the metal-insulator transition of heavily B-doped diamond
Photoemission study of electronic structure evolution across the metal-insulator transition of heavily B-doped diamond
复制标题
重硼掺杂金刚石金属-绝缘体转变过程中电子结构演化的光电研究
DOI:
10.1016/j.jpcs.2010.10.052
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
et al
中科院分区:
文献类型:
--
作者:
H.Okazaki;et al
We studied the electronic structure evolution of heavily B-doped diamond films across the metal–insulator transition (MIT) using ultraviolet photoemission spectroscopy (UPS). From high-temperature UPS, through which electronic states near the Fermi level (EF) up to ∼5kBT can be observed (kBis the Boltzmann constant and T the temperature), we observed the carrier concentration dependence of spectral shapes near EF. Using another carrier concentration dependent UPS, we found that the change in energy position of sp-band of the diamond valence band, which corresponds to the shift of EF, can be explained by the degenerate semiconductor model, indicating that the diamond valence band is responsible for the metallic states for samples with concentrations above MIT. We discuss a possible electronic structure evolution across MIT.
影响因子:
4
作者:
H. Okazaki;T. Yokoya;J. Nakamura;N. Yamada;Tetsuya Nakamura;T. Muro;Y. Tamenori;T. Matsushita;Y. Takata;T. Tokushima;Shik Shin;Y. Takano;M. Nagao;T. Takenouchi;H. Kawarada;T. Oguchi
通讯作者:
T. Oguchi
DOI:
10.1103/physrevb.15.2242
发表时间:
1977
期刊:
影响因子:
--
作者:
J. Pireaux;R. Caudano
通讯作者:
R. Caudano
DOI:
10.1088/0953-8984/21/25/253201
发表时间:
2005
期刊:
Journal of Physics: Condensed Matter
影响因子:
--
作者:
Y. Takano
通讯作者:
Y. Takano