Dynamics of charge-transfer excitons in type-II semiconductor heterostructures

被引：15

作者：

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

Lammers, C. ^{[1
,2
]}

Richter, P. -H. ^{[1
,2
]}

Fuchs, C. ^{[1
,2
]}

Stolz, W. ^{[1
,2
]}

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

Vaenskae, O. ^{[1
,2
]}

Weseloh, M. J. ^{[1
,2
]}

Kira, M. ^{[3
]}

Koch, S. W. ^{[1
,2
]}

机构：

[1] Philipps Univ Marburg, Dept Phys, Renthof 5, D-35032 Marburg, Germany

[2] Philipps Univ Marburg, Mat Sci Ctr, Renthof 5, D-35032 Marburg, Germany

[3] Univ Michigan, Ctr Ultrafast Opt Sci, Ann Arbor, MI 48109 USA

来源：

PHYSICAL REVIEW B | 2018年 / 97卷 / 12期

关键词：

MULTIPLE-QUANTUM WELLS; SOLAR-CELLS; TERAHERTZ SPECTROSCOPY; GAAS; TRANSISTORS; RELAXATION; SIGNATURES; ELECTRONS; RADIATION; TRANSPORT;

D O I：

10.1103/PhysRevB.97.125306

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The formation, decay, and coherence properties of charge-transfer excitons in semiconductor heterostructures are investigated by applying four-wave-mixing and terahertz spectroscopy in combination with a predictive microscopic theory. A charge-transfer process is identified where the optically induced coherences decay directly into a charge-transfer electron-hole plasma and exciton states. It is shown that charge-transfer excitons are more sensitive to the fermionic electron-hole substructure than regular excitons.

引用

页数：12

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