Phys. Rev. B 69, 201201(R) (2004) [4 pages]Polyamorphic transition of germanium under pressureSee Also: Publisher's Note
Pressure-induced transformations in the atomic and electronic structure of amorphous germanium (a-Ge) have been investigated by using x-ray absorption spectroscopy (XAS) combined with energy-scanning x-ray diffraction. Our data show that an abrupt change in the local structure and in the electron states near the Fermi level occurs in evaporated a-Ge at a pressure of about 8 GPa. The transformation is clearly detectable by a change in the shape and energy shift in the near-edge structures and by an increase of the average first-neighbor distance measured by XAS. The occurrence of this polyamorphic transition is discussed in light of the recent advances in the study of multiple dense fluid phases. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.69.201201
DOI:
10.1103/PhysRevB.69.201201
PACS:
61.10.Ht, 61.43.Dq, 61.50.Ks, 64.70.-p
See AlsoPublisher's Note: Emiliano Principi, Andrea Di Cicco, Frédéric Decremps, Alain Polian, Simone De Panfilis, and Adriano Filipponi, Publisher's Note: Polyamorphic transition of germanium under pressure [Phys. Rev. B 69, 201201 (2004)], Phys. Rev. B 69, 249902 (2004). |
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