Person

Jean Berney

This person is no longer with EPFL

Related publications (7)

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Electron beam apparatus

Jean Berney

A method suitable for preparing a specimen for inspection, the method comprising the steps of: irradiating a photocathode so that the photocathode emits electrons from a surface of the photocathode, wherein the emitted electrons each follow a trajectory, a ...

2012

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We show a double path mechanism for the formation of charged excitons (trions); they are formed through bi- and trimolecular processes. This directly implies that both negatively and positively charged excitons coexist in a quantum well, even in the absenc ...

2009

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We demonstrate that the interaction between excitons and a sea of incoherent electrons does not preclude excitons dressing by light. We investigate if exciton-electron scattering plays some inhibiting role in the coherent light-exciton coupling by measurin ...

2008

I report on the effect of a moderate excess electron population on nonlinearities in modulation-doped CdTe quantum wells. I show that the electron population does not qualitatively affect the nature of correlations between excitons. In this respect, I brin ...

EPFL2007

Many-body interaction evidenced through exciton-trion-electron correlated dynamics

Benoît Marie Joseph Deveaud, Jean Berney, Marcia Portella Oberli, Victoria Ciulin

Interactions among excitons, trions, and electrons are studied in CdTe modulation-doped quantum wells. These many-body interactions are investigated through the nonlinear dynamical properties in the excitonic complexes using time and spectrally resolved pu ...

2004

Determination of the exciton formation in quantum wells from time-resolved interband luminescence

Benoît Marie Joseph Deveaud, Jean Berney, François Morier-Genoud, Marcia Portella Oberli, Lars Kappei

We present the results of a detailed time-resolved luminescence study carried out on a very high quality InGaAs quantum well sample where the contributions at the energy of the exciton and at the band edge can be clearly separated. We perform this experime ...

American Physical Society2004

Interacting many-body systems in quantum wells: Evidence for exciton-trion-electron correlations

Benoît Marie Joseph Deveaud, Jean Berney, Marcia Portella Oberli, Victoria Ciulin

We report on the nonlinear optical dynamical properties of excitonic complexes in CdTe modulation-doped quantum wells, due to many-body interactions among excitons, trions, and electrons. These were studied by time and spectrally resolved pump-probe experi ...

American Physical Society2004