Purely bianisotropic scatterers

被引：21

作者：

Albooyeh, M. ^{[1
,2
]}

Asadchy, V. S. ^{[1
]}

Alaee, R. ^{[3
,4
]}

Hashemi, S. M. ^{[5
]}

Yazdi, M. ^{[6
]}

Mirmoosa, M. S. ^{[1
]}

Rockstuhl, C. ^{[3
,7
]}

Simovski, C. R. ^{[1
]}

Tretyakov, S. A. ^{[1
]}

机构：

[1] Aalto Univ, Dept Radio Sci & Engn, POB 13000, FI-00076 Aalto, Finland

[2] Univ Calif Irvine, Dept Elect Engn & Comp Sci, Irvine, CA 92617 USA

[3] Karlsruhe Inst Technol, Inst Theoret Solid State Phys, D-76131 Karlsruhe, Germany

[4] Max Planck Inst Sci Light, Erlangen, Germany

[5] Shahid Rajaee Teacher Training Univ, Dept Elect Engn, Tehran, Iran

[6] Babol Noshirvani Univ Technol, Babol Sar, Iran

[7] Karlsruhe Inst Technol, Inst Nanotechnol, D-76021 Karlsruhe, Germany

来源：

PHYSICAL REVIEW B | 2016年 / 94卷 / 24期

关键词：

POLARIZABILITY;

D O I：

10.1103/PhysRevB.94.245428

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The polarization response of molecules ormeta-atoms to external electric and magnetic fields, which defines the electromagnetic properties of materials, can either be direct (electric field induces electric moment and magnetic field induces magnetic moment) or indirect (magnetoelectric coupling in bianisotropic scatterers). Earlier studies suggest that there is a fundamental bound on the indirect response of all passive scatterers: It is believed to be always weaker than the direct one. In this paper, we prove that there exist scatterers which overcome this bound substantially. Moreover, we show that the amplitudes of electric and magnetic polarizabilities can be negligibly small as compared to the magnetoelectric coupling coefficients. However, we prove that if at least one of the direct-excitation coefficients vanishes, magnetoelectric coupling effects in passive scatterers cannot exist. Our findings open a way to a new class of electromagnetic scatterers and composite materials.

引用

页数：7

共 19 条

[1] Determining polarizability tensors for an arbitrary small electromagnetic scatterer [J].