Crystal symmetry and pressure effects on the valence band structure of γ -InSe and ε -GaSe: Transport measurements and electronic structure calculations

1Departamento de Física Aplicada, ICMUV, Universitat de València, Edificio de Investigación, c/Dr. Moliner 50, 46100 Burjassot (Valencia), Spain 2Departamento de Física Aplicada, Universitat Politécnica de València, EPSA, 03801 Alcoi, Spain 3Physique des Milieux Condenses, Universite Pierre et Marie Curie, 75252 Paris, Cedex 05, France 4Institut de Ciència dels Materials de Barcelona, CSIC, Campus de la UAB, 08193 Bellaterra (Barcelona), Spain sReceived 4 August 2004; revised manuscript received 8 October 2004; published 18 March 2005 d

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