Publication
Spin-resolved photoemission study of epitaxially grown MoSe2 and WSe2 thin films
Publications associées (41)
Hidden bulk and surface effects in the spin polarization of the nodal-line semimetal ZrSiTe
Marco Grioni, Arnaud Magrez, Oleg Yazyev, Daniel Gosalbez Martinez, Helmuth Berger, Alberto Crepaldi, Mauro Fanciulli, Gianmarco Gatti
Local inversion symmetry breaking in centrosymmetric materials can lead to large spin polarization of the electronic band structure in separate sectors of the unit cell. Here, the authors reveal such hidden spin polarisation in ZrSiTe using spin and angle ...
NATURE RESEARCH2021Spatial statistics of superposition of two uncorrelated speckle patterns with polarization diversity
A detailed theoretical and experimental study on the effect of the superposition of uncorrelated speckle patterns with polarization diversity on the spatial statistics of the superposed speckle pattern is presented. It is shown that depending on the mutual ...
Elsevier2021Fully spin-polarized bulk states in ferroelectric GeTe
By measuring the spin polarization of GeTe films as a function of light polarization we observed that the bulk states are fully spin polarized in the initial state, in strong contrast with observations for other systems with a strong spin-orbit interaction ...
2020Measuring the Intra-Atomic Exchange Energy in Rare-Earth Adatoms
Harald Brune, François Patthey, Stefano Rusponi, Marina Pivetta
We present the first experimental determination of the intra-atomic exchange energy between the inner 4f and the outer 6s5d shells in rare-earth elements. Inelastic electron tunneling spectroscopy on individual rare-earth atoms adsorbed on metal-supported ...
AMER PHYSICAL SOC2020Correlated states in twisted double bilayer graphene
Oleg Yazyev, Quansheng Wu, Cheng Shen, Na Li, Jian Tang, Rong Yang
Electron-electron interactions play an important role in graphene and related systems and can induce exotic quantum states, especially in a stacked bilayer with a small twist angle(1-7). For bilayer graphene where the two layers are twisted by the 'magic a ...
NATURE PUBLISHING GROUP2020Radial Spin Texture of the Weyl Fermions in Chiral Tellurium
Majed Chergui, Henrik Moodysson Rønnow, Marco Grioni, Oleg Yazyev, Luc Testa, Daniel Gosalbez Martinez, Philippe Bugnon, Alberto Crepaldi, Luca Moreschini, Mauro Fanciulli, Simon Karl Moser, Gianmarco Gatti, Serhii Polishchuk
Trigonal tellurium, a small-gap semiconductor with pronounced magneto-electric and magneto-optical responses, is among the simplest realizations of a chiral crystal. We have studied by spin- and angle-resolved photoelectron spectroscopy its unconventional ...
AMER PHYSICAL SOC2020Terahertz-optical properties of a bismuth ferrite single crystal
Henrik Moodysson Rønnow, Jean-Philippe Ansermet, Marcin Bialek
Transmission through a (100)-oriented single crystal of bismuth ferrite (BiFeO3) was studied at frequencies of 0.485-0.765 THz with a continuous-wave source and in the temperature range of 30-350 K as a function of polarization angle. The fine splitting of ...
AMER PHYSICAL SOC2019Tailored-Potential Semiconductor Quantum Nanostructures Grown in Inverted Pyramids
We have focused on the ability to tune the aluminum (Al) content of the AlGaAs alloy along the growth direction in inverted pyramids (by MOVPE), thus tailoring the potential along a QWR nanostructure. Three parabolic-potential QDs (PQDs) of different poten ...
EPFL2019Comparative analysis of transmittance measurement geometries and apparatus
Sabine Süsstrunk, Marjan Shahpaski
The accurate measurement of reflectance and transmittance properties of materials is essential in the printing and display industries in order to ensure precise color reproduction. In comparison with reflectance measurement, where the impact of different g ...
2019Selective Probing of Hidden Spin-Polarized States in Inversion-Symmetric Bulk MoS2
Jan Hugo Dil, Joël Mesot, Stefan Peter Muff, Andrea Pisoni, Mauro Fanciulli, Elia Razzoli, Philipp Aebi
Spin-and angle-resolved photoemission spectroscopy is used to reveal that a large spin polarization is observable in the bulk centrosymmetric transition metal dichalcogenide MoS2. It is found that the measured spin polarization can be reversed by changing ...
American Physical Society2017