文献类型：期刊文献

中文题名：Mn overlayers on PbTe(111): Substitutional adsorption and interface formation

英文题名：Mn overlayers on PbTe (111): Substitutional adsorption and interface formation

作者：Wu Hai-Fei[1,2];Zhang Han-Jie[1];Lu Yun-Hao[3];Yan Yong-Hong[2];Li Hai-Yang[1];Bao Shi-Ning[1];He Pi-Mo[1]

机构：[1]Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China;[2]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China;[3]Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

年份：2014

卷号：0

期号：12

中文期刊名：中国物理B：英文版

外文期刊名：CHINESE PHYSICS B

收录：SCI-EXPANDED(收录号：WOS:000346698000082)、CSTPCD、、EI(收录号：20144900296740)、Scopus(收录号：2-s2.0-84913555506)、WOS、CSCD、CSCD2013_2014

基金：Project supported by the National Natural Science Foundation of China (Grant Nos. 11074214, 51202149, and 11204180), the Natural Science Foundation of Zhejiang Province, China (Grant No. LQ12F04001), the Scientific Research Fund of Zhejiang Provincial Education Department, China (Grant No. Y201121234), and the Ministry of Science and Technology of China.

语种：英文

中文关键词：金属锰;覆盖层;吸附相;PbTe;界面;代换;光电发射光谱;沉积过程

外文关键词：photoemission spectrum; metal-semiconductor; electronic structure; PbTe

中文摘要：The formation of the Mn/Pb Te(111) interface is investigated by photoemission spectrum. The core level behavior of Mn 2p is consistent with Mn substitutional adsorption during the initial Mn deposition, forming a(√3 ×√3)R30?-Pb0.67Mn0.33 Te phase of the second layer. Further deposition of Mn can cause metallic Mn islands to cover the substitutional substrate. Ultraviolet photoemission measurements show that the Fermi level is shifted into the conduction band, indicating Ohmic contact formation at the Mn/Pb Te(111) interface. The valence band maximum associated with the Pb0.67Mn0.33 Te layer is located at 1.27 e V below the Fermi level, and a schematic electronic structure of the Mn/Pb Te(111)interface is given. The work function of the substituted substrate with Pb-covered Mn islands is determined to be 4.16 e V,in comparison with 4.35 e V for the Pb-covered substituted substrate and 3.95 e V for the pristine Pb Te(111) surface.

外文摘要：The formation of the Mn/PbTe (111) interface is investigated by photoemission spectrum. The core level behavior of Mn 2p is consistent with Mn substitutional adsorption during the initial Mn deposition, forming a (root 3 x root 3)R30 degrees - Pb0.67Mn0.33Te phase of the second layer. Further deposition of Mn can cause metallic Mn islands to cover the substitutional substrate. Ultraviolet photoemission measurements show that the Fermi level is shifted into the conduction band, indicating Ohmic contact formation at the Mn/PbTe (111) interface. The valence band maximum associated with the Pb0.67Mn0.33Te layer is located at 1.27 eV below the Fermi level, and a schematic electronic structure of the Mn/PbTe (111) interface is given. The work function of the substituted substrate with Pb-covered Mn islands is determined to be 4.16 eV, in comparison with 4.35 eV for the Pb-covered substituted substrate and 3.95 eV for the pristine PbTe (111) surface.