MAGNETOOPTICAL STUDY ON THE EXCITONIC SPECTRUM OF (C6H13NH3)2PBI4

被引：21

作者：

KATAOKA, T ^{[1
]}

KONDO, T ^{[1
]}

ITO, R ^{[1
]}

SASAKI, S ^{[1
]}

UCHIDA, K ^{[1
]}

MIURA, N ^{[1
]}

机构：

[1] UNIV TOKYO,INST SOLID STATE PHYS,TOKYO 113,JAPAN

来源：

PHYSICA B | 1993年 / 184卷 / 1-4期

关键词：

D O I：

10.1016/0921-4526(93)90336-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Magneto-absorption spectra have been measured over the lowest-energy exciton region of a layered perovskite-type material (C6H13NH3)2PbI4 under pulsed high magnetic fields up to 42 T at 4.2 K. The magnetic fields are applied parallel and perpendicular to the c axis. The Zeeman splitting with small diamagnetic shifts has obviously been observed in the parallel-field configuration. The anisotropic Zeeman splittings have been observed in the perpendicular-field configuration. The diamagnetic shifts observed arc very small, indicating that the Wannier-exciton model based on the effective mass approximation is not appropriate for the lowest-energy excitons in (C6H13NH3)2PbI4. The anisotropic Zeeman splittings are well explained in terms of the cationic Frenkel-exciton model.

引用

页码：132 / 136

页数：5

共 12 条

[1] ROOM-TEMPERATURE EXCITONIC NONLINEAR-OPTICAL EFFECTS IN SEMICONDUCTOR QUANTUM-WELL STRUCTURES [J].