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Optical absorption edge of a new GaSe polytype |
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| Authors: | R Le Toullec M Balkanski JM Besson A Kuhn |
| Institution: | Laboratoire de Physique des Solides, Université P. et M. Curie, 4, Place Jussieu, 75230 Paris Cedex 05, France;Laboratoire de Luminescence II, Université P. et M. Curie, 4, Place Jussieu, 75230 Paris Cedex 05, France |
| Abstract: | The optical energy gap of the δ modification of GaSe is reported. The energy shift of the exciton in this polytype is explained in terms of interlayer separation by comparison with the ? structure under high pressure. |
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