Magneto-transport subband spectroscopy in InAs nanowires

Florian Vigneau (1) , Vladimir Prudkovskiy (1) , Ivan Duchemin (2) , Walter Escoffier (1) , Philippe Caroff (3, 4) , Yann-Michel Niquet (2) , Renaud Leturcq (3) , Michel Goiran (1) , Bertrand Raquet (1)

1 LNCMI-T - Laboratoire national des champs magnétiques intenses - Toulouse
2 LSIM - Laboratory of Atomistic Simulation
3 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
4 Department of Electronic Materials Engineering, Research School of Physical Sciences and Engineering

We report on magnetotransport measurements in InAs nanowires under a large magnetic field (up to 55 T), providing a spectroscopy of the one-dimensional electronic band structure. Large modulations of the conductance mediated by a control of the Fermi energy reveal the Landau fragmentation, carrying the fingerprints of the confined InAs material. Our numerical simulations of the magnetic band structure consistently support the experimental results and reveal key parameters of the electronic confinement.

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Florian Vigneau, Vladimir Prudkovskiy, Ivan Duchemin, Walter Escoffier, Philippe Caroff, et al.. Magneto-transport subband spectroscopy in InAs nanowires. Physical Review Letters, 2014, 112, 076801, 5 p. ⟨10.1103/PhysRevLett.112.076801⟩. ⟨hal-00959896⟩