Observation of High Angular Momentum Excitons in Cuprous Oxide

被引：82

作者：

Thewes, J. ^{[1
]}

Heckoetter, J. ^{[1
]}

Kazimierczuk, T. ^{[1
]}

Assmann, M. ^{[1
]}

Froehlich, D. ^{[1
]}

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

Semina, M. A. ^{[2
]}

Glazov, M. M. ^{[2
]}

机构：

[1] Tech Univ Dortmund, Expt Phys 2, D-44221 Dortmund, Germany

[2] Russian Acad Sci, Ioffe Inst, St Petersburg 194021, Russia

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 115卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

QUANTUM; SPECTRUM;

D O I：

10.1103/PhysRevLett.115.027402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The recent observation of dipole-allowed P excitons up to principal quantum numbers of n = 25 in cuprous oxide has given insight into exciton states with unprecedented spectral resolution. While so far the exciton description as a hydrogenlike complex has been fully adequate for cubic crystals, we demonstrate here distinct deviations: The breaking of rotational symmetry leads to mixing of high angular momentum F and H excitons with the P excitons so that they can be observed in absorption. The F excitons show a threefold splitting that depends systematically on n, in agreement with theoretical considerations. From detailed comparison of experiment and theory we determine the cubic anisotropy parameter of the Cu2O valence band.

引用

页数：5

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