Resolved Quadrupolar Transition in Ti $O_{2}$

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5 December 1977

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 39 (23), 1490-1493
https://doi.org/10.1103/physrevlett.39.1490

Abstract

We report an investigation of the direct forbidden absorption edge of Ti

O_{2}

. For the first time we have resolved the weak quadrupolar

1 s

exciton and measured its binding energy. Taking into account polaron effects, we estimated the bare electron effective mass in the

Γ_{1}

minimum of the conduction band and obtained a fairly reasonable value of

3 m_{0}

.

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