Electronic structure of indium selenide probed by magnetoabsorption spectroscopy under high pressure

Marius Millot (1) , Jean-Marc Broto (1, 2) , Sylvie George (1) , J. Gonzalez (3, 4) , A. Segura

1 LNCMI-T - Laboratoire national des champs magnétiques intenses - Toulouse
2 LNCMP - Laboratoire National des Champs Magnétiques Pulsés
3 I2MR - Institut de médecine moléculaire de Rangueil
4 UT3 - Université Toulouse III - Paul Sabatier

We report on an investigation of the peculiar electronic structure of the layered semiconductor InSe by magneto-optical experiments under high pressure up to 5 GPa. Magneto-absorption spectroscopy is performed under pulsed magnetic field up to 53 T using a specific setup. Excitonic magnetofingerprints and high-field oscillatory magnetoabsorption yield significant details on the band structure. In addition, the application of an external pressure unveils phenomena that confirm the specific k . p model proposed for this compound on the basis of earlier measurements.

Domaines: Supraconductivité [cond-mat.supr-con]

Marius Millot, Jean-Marc Broto, Sylvie George, J. Gonzalez, A. Segura. Electronic structure of indium selenide probed by magnetoabsorption spectroscopy under high pressure. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2010, 81, pp.205211. ⟨10.1103/PhysRevB.81.205211⟩. ⟨hal-00555164⟩