더블 전자 층 간의 상호관계와 드래그 현상

• 발행기관: 한국세라믹학회
• 저자명: 이가영
• 간행물 정보: 『세라미스트』제21권 제2호, 19~28쪽, 전체 10쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2018.06.30

영문 초록

Coulomb drag is an effective probe into interlayer interaction between two electron systems in close proximity. For example, it can be a measure of momentum, phonon, or energy transfer between the two systems. The most exotic phenomenon would be when bosonic indirect excitons (electron-hole pairs) are formed in double layer systems where electrons and holes are populated in the opposite layers. In this review, we present various drag phenomena observed in different double layer electron systems, e.g. GaAs/AlGaAs heterostructures and two-dimensional material based heterostructures. In particular, we address the different behavior of Coulomb drag depending on its origin such as momentum or energy transfer between the two layers and exciton condensation. We also discuss why it is difficult to achieve electron-hole pairs in double layer electron systems in equilibrium.

목차

1. 서론

2. 본론

3. 결론

참고문헌

키워드

double layer electron system interlayer interaction Coulomb drag exciton condensation twodimensional material