MAGNETOOPTICAL STUDY ON EXCITONIC SPECTRA IN (C6H13NH3)2PBI4

被引：109

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,MINATO KU,TOKYO 106,JAPAN

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.47.2010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetoabsorption spectra of the lowest-energy excitons in a layered perovskite-type material (C6H13NH3)2PbI4 have been measured under pulsed high magnetic fields up to 42 T at 4.2 K in the Faraday configuration (E perpendicular-to c parallel-to B) and the Voigt configuration (E perpendicular-to c perpendicular-to B). Energy shifts and splittings in the spectra for the Voigt configuration have been observed in this material. For the Faraday configuration, the Zeeman splitting with small diamagnetic shifts has clearly been detected. The diamagnetic coefficients obtained are much smaller than that for PbI2, suggesting that the Wannier-exciton model is not a good approximation for the lowest-energy excitions in (C6H13NH3)2PbI4. Theoretical analysis based on the cationic Frenkel-exciton model yields semiquantitative agreement with the experimental results.

引用

页码：2010 / 2018

页数：9

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