Tunable Casimir Repulsion with Three-Dimensional Topological Insulators

被引：176

作者：

Grushin, Adolfo G. ^{[1
]}

Cortijo, Alberto ^{[2
]}

机构：

[1] CSIC, Inst Ciencia Mat Madrid, Madrid 28049, Spain

[2] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 02期

关键词：

FORCES; SURFACE;

D O I：

10.1103/PhysRevLett.106.020403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this Letter, we show that switching between repulsive and attractive Casimir forces by means of external tunable parameters could be realized with two topological insulator plates. We find two regimes where a repulsive (attractive) force is found at small (large) distances between the plates, canceling out at a critical distance. For a frequency range where the effective electromagnetic action is valid, this distance appears at length scales corresponding to 1 - is an element of(omega) similar to (w/pi)alpha theta.

引用

页数：4

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