Experimental Studies of Intrinsic Surface Electronic and Magnetic Properties

该计划的总体科学目标是 发现并研究与之相关的物理现象 突然终止的晶格发生在 晶体/真空界面，以及与 晶体外延层界面和外延多层膜 结构. 具体的物理现象， 固有的表面和界面性质包括电子 表面态，弛豫与重构，表面屏蔽 以及芯能级位移和表面晶体场效应。 这些 使用各种实验技术研究现象 其对结构敏感（低能电子 衍射），组成（俄歇电子能谱）， 电子性质（角分辨光电子发射， 同步辐射）和磁性（磁光 和自旋极化技术）。 实验研究是 进行和协调的理论/数字工作的一个 相似的性质。 该项目涉及的基本问题， 重要的技术意义，特别是在 基于这些磁性薄膜的信息存储。

The general scientific objective of this program is to discover and investigate physical phenomena associated with the abrupt termination of a crystal lattice which occurs at a crystal/vacuum interface, and similar phenomena associated with crystal expitaxial layer interfaces and with epitaxial multilayer structures. Specific physical phenomena which are manifestations of intrinsic surface and interface properties include electronic surface states, relaxation and reconstruction, surface screening and core level shifts and surface crystal field effects. These phenomena are studied using a variety of experimental techniques which are sensitive to structure (low energy electron diffraction), composition (Auger electron spectroscopy), electronic properties (angle resolved photoelectron emission with synchrotron radiation) and magnetic properties (magneto-optical and spin-polarization techniques). The experimental studies are carried out and coordinated with theoretical/numerical work of a similar nature. This project addresses fundamental issues having important technological significance, specifically in relation to information storage based on these magnetic films.