The surface relaxation and band structure of Mo(112).
نویسندگان
چکیده
The experimental and theoretical surface band structures of Mo(112) are compared. This surface band structure mapping is presented with corrections included for the lattice relaxation of the Mo(112) surface. Quantitative low energy electron diffraction (LEED) has been used to determine the details of the Mo(112) surface structure. The first layer contraction is 14.9% by LEED intensity versus voltage analysis and is in general agreement with the 17.6% contraction found from total surface energy optimization. The electronic band structure is mapped out along [Formula: see text]-[Formula: see text] and [Formula: see text]-[Formula: see text] of the surface Brillouin zone (SBZ). There is strong evidence of electron-phonon coupling particularly in the region of the Fermi level band crossing at 0.54 Å(-1).
منابع مشابه
Morphological and electronic properties of ultrathin crystalline silica epilayers on a Mo„112... substrate
Ultrathin crystalline silica layers grown on a Mo~112! substrate have been shown to be a useful silica model oxide support in surface science model catalyst studies. As the oxide support material plays an important role in the catalytic process, a multitechnique surface science study is presented to characterize the morphological and electronic properties of the heteroepitaxial system SiO2 /Mo(...
متن کاملThe electron–phonon coupling at the Mo(112) surface
We investigated the electron–phonon coupling (EPC), in the vicinity of the Fermi level, for the surface-weighted states of Mo(112) from high resolution angle-resolved photoemission data taken parallel to the surface corrugation (i.e. 〈1̄1̄1〉). The surface-weighted bandwidth may be discussed in terms of electron–electron interactions, electron impurity scattering and electron–phonon coupling and e...
متن کاملبررسی ویژگیهای ساختاری، الکترونی و اپتیکی ترکیب BSb در حالت سطح (110) و انبوهه با استفاده از مفاهیم اولیه
In recent work the structural, electronic and optical properties of BSb compound in bulk and surface (110) states have been studied. Calculations have been performed using Full-Potential Augmented Plane Wave (FP-LAPW) method by WIEN2k code in Density Functional Theory (DFT) framework. The structural properties of the bulk such as lattice constant, bulk module and elastic constants have been inv...
متن کاملStructure of thin SiO2 films grown on Mo„112..
Ultra-thin SiO2 films were prepared by evaporating Si onto a Mo~112! surface followed by oxidation and annealing up to 1200 K. The surface structure and film quality were investigated by low-energy electron diffraction ~LEED!, Auger spectroscopy ~AES!, and high-resolution electron energy loss spectroscopy ~HREELS!. A well-ordered, monolayer Mo(112)-c(232)-SiO2 structure was characterized by HRE...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Journal of physics. Condensed matter : an Institute of Physics journal
دوره 21 47 شماره
صفحات -
تاریخ انتشار 2009