Publications associées à Bi2Te3-xSex series studied by resistivity and thermopower

Accurate determination of charge transition levels of the As-As dimer defect at GaAs/oxide interfaces through hybrid functionals

Alfredo Pasquarello, Giacomo Francesco Leonardo Miceli

The energy levels of the As-As dimer defect at GaAs/oxide interfaces are accurately determined within a hybrid functional scheme and aligned with respect to the GaAs band gap. An As-As dimer is constructed at a model interface between GaAs and kappa-Al2O3, ...

American Institute of Physics2013

Controlling edge states in the Kane-Mele model via edge chirality

Oleg Yazyev, Gabriel Albert Autes

We investigate the dependence of band dispersion of the quantum spin Hall effect (QSHE) edge states in the Kane-Mele model on crystallographic orientation of the edges. Band structures of the one-dimensional honeycomb lattice ribbons show the presence of t ...

Wiley-V C H Verlag Gmbh2013

Transient mid-IR study of electron dynamics in TiO2 conduction band

Majed Chergui, Michel Rossi, Mercedes Hannelore Rittmann-Frank, Fabio Giacomo Santomauro

The dynamics of TiO2 conduction band electrons were followed with a novel broadband synchrotron-based transient mid-IR spectroscopy setup. The lifetime of conduction band electrons was found to be dependent on the injection method used. Direct band gap exc ...

Royal Society of Chemistry2013

Peculiarities in the pressure dependence of photoluminescence in InAlN

Nicolas Grandjean, Jean-François Carlin

Studies of ambient-pressure and high-pressure behavior of photoluminescence (PL) for series of InxAl1-xN layers are presented. The measured evolution of PL energy (E-PL) with x is characterized by a clear decrease of E-PL and exhibits a strong bowing. This ...

Wiley-V C H Verlag Gmbh2013

Evidence of reduced surface electron-phonon scattering in the conduction band of Bi2Se3 by nonequilibrium ARPES

Klaus Kern, Marco Grioni, Helmuth Berger, Philippe Bugnon, Alberto Crepaldi, Jens Christian Johannsen

The nature of the Dirac quasiparticles in topological insulators calls for a direct investigation of the electron-phonon scattering at the surface. By comparing time-resolved ARPES measurements of the topological insulator Bi2Se3 with different probing dep ...

Amer Physical Soc2013

Ultrafast photodoping and effective Fermi-Dirac distribution of the Dirac particles in Bi2Se3

Klaus Kern, Marco Grioni, Helmuth Berger, Philippe Bugnon, Alberto Crepaldi

We exploit time- and angle-resolved photoemission spectroscopy to determine the evolution of the out-of-equilibrium electronic structure of the topological insulator Bi2Se3. The response of the Fermi-Dirac distribution to ultrashort IR laser pulses has bee ...

Amer Physical Soc2012

Giant Ambipolar Rashba Effect in the Semiconductor BiTeI

Klaus Kern, Marco Grioni, Oleg Yazyev, Helmuth Berger, Philippe Bugnon, Alberto Crepaldi, Gabriel Albert Autes, Luca Moreschini, Simon Karl Moser, Cédric Tournier-Colletta, Naunidh Singh Virk

We observe a giant spin-orbit splitting in the bulk and surface states of the noncentrosymmetric semiconductor BiTeI. We show that the Fermi level can be placed in the valence or in the conduction band by controlling the surface termination. In both cases, ...

Amer Physical Soc2012

Disentanglement of Surface and Bulk Rashba Spin Splittings in Noncentrosymmetric BiTeI

Jan Hugo Dil, Thorsten Schmitt, Vladimir N. Strocov, Stefan Peter Muff

BiTeI has a layered and noncentrosymmetric structure where strong spin-orbit interaction leads to a giant Rashba spin splitting in the bulk bands. We present direct measurements of the bulk band structure obtained with soft x-ray angle-resolved photoemissi ...

2012

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Bi2Te3-xSex series studied by resistivity and thermopower

Accurate determination of charge transition levels of the As-As dimer defect at GaAs/oxide interfaces through hybrid functionals

Controlling edge states in the Kane-Mele model via edge chirality

Transient mid-IR study of electron dynamics in TiO2 conduction band

Peculiarities in the pressure dependence of photoluminescence in InAlN

Evidence of reduced surface electron-phonon scattering in the conduction band of Bi2Se3 by nonequilibrium ARPES

Band-edge levels in semiconductors and insulators: Hybrid density functional theory versus many-body perturbation theory

Ultrafast photodoping and effective Fermi-Dirac distribution of the Dirac particles in Bi2Se3

Giant Ambipolar Rashba Effect in the Semiconductor BiTeI

Disentanglement of Surface and Bulk Rashba Spin Splittings in Noncentrosymmetric BiTeI

Quasiparticle effects in the bulk and surface-state bands of Bi2Se3 and Bi2Te3 topological insulators

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Ultrafast photodoping and effective Fermi-Dirac distribution of the Dirac particles in Bi2Se3

Disentanglement of Surface and Bulk Rashba Spin Splittings in Noncentrosymmetric BiTeI

Quasiparticle effects in the bulk and surface-state bands of Bi2Se3 and Bi2Te3 topological insulators

Accurate determination of charge transition levels of the As-As dimer defect at GaAs/oxide interfaces through hybrid functionals

Controlling edge states in the Kane-Mele model via edge chirality

Giant Ambipolar Rashba Effect in the Semiconductor BiTeI

Transient mid-IR study of electron dynamics in TiO2 conduction band

Evidence of reduced surface electron-phonon scattering in the conduction band of Bi2Se3 by nonequilibrium ARPES

Peculiarities in the pressure dependence of photoluminescence in InAlN

Band-edge levels in semiconductors and insulators: Hybrid density functional theory versus many-body perturbation theory