کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5368295 1388390 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electronic properties of (Co, Ag) self-organized nano dots on Au(1 1 1) vicinal surfaces
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Electronic properties of (Co, Ag) self-organized nano dots on Au(1 1 1) vicinal surfaces
چکیده انگلیسی

Electronic properties of (Ag, Co) nanostructures grown on Au(1 1 1) vicinal surfaces have been studied by angle resolved photoemission spectroscopy (ARPES), scanning tunneling microscopy and spectroscopy (STM/STS). The growth and self-assembling of Co and Ag nano dots on Au(7 8 8) surface are described. Co island growth leads to the formation of repulsive energy barriers for the surface state, and subsequently to the appearance of confined states in between each group of four Co dots. On the contrary, when Ag nano dots are grown, the potential barrier for the surface electrons is not enough to suppress their dispersive behavior. Nevertheless, inside Ag islands appear new quantized states whose energies can be tailored by varying the deposition rate of the adsorbate and/or the Miller index of the vicinal surfaces. In both systems, high homogeneity of the electronic properties is achieved over a macroscopic scale.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 254, Issue 1, 31 October 2007, Pages 45-49
نویسندگان
, , , , , , ,