TOPOLOGICAL INSULATOR RESEARCH MADE IMPORTANT PROGRESS

• 来源期刊: 中国科学基金(英文版)
• 学科: 工学
• 年，卷（期）: 2009,（1）
• 页码范围: 31
• 页数: 1页
• 分类号: TM216
• 语种: 中文

摘要

According to different structure of electronic states,materials are divided traditionally into two types, namely,"metals"and"insulators".Topological insulators,however,are new states of quantum matter. It is very different from traditionally defined"metals"and"insulators".The electronic state of its body is an insulator with energy cap,and its surface is metal state without energy gap.This surface metal state