Concept
Quasi-moment
Publications associées (31)
Momentum-Space Imaging of Ultra-Thin Electron Liquids in δ-Doped Silicon
Two-dimensional dopant layers (δ-layers) in semiconductors provide the high-mobility electron liquids (2DELs) needed for nanoscale quantum-electronic devices. Key parameters such as carrier densities, effective masses, and confinement thicknesses for 2DELs ...
WILEY2023Sondheimer oscillations as a probe of non-ohmic flow in WP2 crystals
Philip Johannes Walter Moll, Matthias Carsten Putzke, Yi-Chiang Sun, Chunyu Guo, Jonas De Jesus Diaz Gomez, Maarten Ruud van Delft, Jacopo Oswald
As conductors in electronic applications shrink, microscopic conduction processes lead to strong deviations from Ohm's law. Depending on the length scales of momentum conserving (l(MC)) and relaxing (l(MR)) electron scattering, and the device size (d), cur ...
NATURE PORTFOLIO2021Visualizing the multifractal wave functions of a disordered two-dimensional electron gas
The wave functions of a disordered two-dimensional electron gas at the quantum-critical Anderson transition are predicted to exhibit multifractal scaling in their real space amplitude. We experimentally investigate the appearance of these characteristics i ...
AMER PHYSICAL SOC2021Experimental studies of the equilibrium and out-of-equilibrium electronic structure of non-symmorphic topological materials
Symmetry and topology are fundamental properties of nature. Mathematics provides us with a general framework to understand these concepts. On one side, symmetry describes the invariance properties of an object for specific transformations. On the other sid ...
EPFL2020Generalization of Fourier’s Law into Viscous Heat Equations
Nicola Marzari, Andrea Cepellotti, Michele Simoncelli
Heat conduction in dielectric crystals originates from the dynamics of atomic vibrations, whose evolution is well described by the linearized Boltzmann transport equation for the phonon populations. Recently, it was shown that thermal conductivity can be r ...
2020h/e oscillations in interlayer transport of delafossites
Philip Johannes Walter Moll, Maja Deborah Bachmann, Matthias Carsten Putzke
Microstructures can be carefully designed to reveal the quantum phase of the wave-like nature of electrons in a metal. Here, we report phase-coherent oscillations of out-of-plane magnetoresistance in the layered delafossites PdCoO2 and PtCoO2. The oscillat ...
2020Electron Dynamics in Anatase TiO2 Nanoparticles by Ultrafast Broadband Deep-Ultraviolet Spectroscopy
Majed Chergui, Edoardo Baldini, Enrico Pomarico, Tania Palmieri
The optical bandgap of anatase TiO2 nanoparticles is dominated by bulk absorption bands in the deep-ultraviolet due to strongly bound excitons. These spectral features can be utilized as a sensitive probe of carrier and lattice dynamics inside the TiO2 nan ...
E D P SCIENCES2019Crystalline and correlated phases in two-dimensional transition metal dichalcogenides
This thesis is dedicated to the study of various aspects of the electronic structure of two-dimensional transition metal dichalcogenides (TMDs) of chemical composition MX (where M is a transition metal atom and X= S, Se, Te), using a combination of \te ...
EPFL2019Spin polarization and attosecond time delay in photoemission from solids
In the photoemission process electrons are emitted from a solid upon excitation with UV light. From the measurement of their energy and momentum, angle-resolved photoemission spectroscopy (ARPES) allows to reconstruct the electronic properties of the solid ...
EPFL2018Experimental investigation of the propagation properties of Bloch surface waves on dielectric multilayer platform
Hans Peter Herzig, Elsie Barakat, Richa Dubey
Background: The periodic dielectric multilayers sustaining Bloch surface waves have been proposed as a platformfor the sensing applications and the two dimensional integrated optics. In this paper, we present the experimental and theoretical investigation ...
2017