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 ...

EPFL2018

Determination of the time scale of photoemission from the measurement of spin polarization

Jan Hugo Dil, Mauro Fanciulli

The Eisenbud-Wigner-Smith (EWS) time delay of photoemission depends on the phase term of the matrix element describing the transition. Because of an interference process between partial channels, the photoelectrons acquire a spin polarization which is also ...

2018

Spin polarization in photoemission from the cuprate superconductor Bi2Sr2CaCu2O8+delta

Jan Hugo Dil, Stefan Peter Muff, Mauro Fanciulli, Andrew Patton Weber

Photoelectrons produced from the excitation of spin-degenerate states in solids can have a sizable spin polarization, which is related to the phase of interfering channels in the photoemission matrix elements. Such spin polarization can be measured by spin ...

Amer Physical Soc2017

Spin-resolved electronic structure of ferroelectric α-GeTe and multiferroic Ge1−Mn Te

Jan Hugo Dil, Stefan Peter Muff, Vladimir N. Strocov, Mauro Fanciulli, Andrew Patton Weber

2017

Spin Polarization and Attosecond Time Delay in Photoemission from Spin Degenerate States of Solids

Jan Hugo Dil, Stefan Peter Muff, Mauro Fanciulli

After photon absorption, electrons from a dispersive band of a solid require a finite time in the photoemission process before being photoemitted as free particles, in line with recent attosecond-resolved photoemission experiments. According to the Eisenbu ...

American Physical Society2017

Spin-resolved band structure of a densely packed Pb monolayer on Si(111)

Jan Hugo Dil, Stefan Peter Muff, Mauro Fanciulli

Monolayer structures of Pb on Si(111) attracted recently considerable interest as superconductivity was found in these truly two-dimensional (2D) structures. In this study, we analyzed the electronic surface band structure of the so-called striped incommen ...

Amer Physical Soc2017

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Spin-Resolved Electronic Response to the Phase Transition in MoTe2

Arnaud Magrez, Jan Hugo Dil, Nan Xu, Helmuth Berger, Philippe Bugnon, Stefan Peter Muff, Mauro Fanciulli, Andrew Patton Weber

2018

Spin polarization in photoemission from the cuprate superconductor Bi2Sr2CaCu2O8+delta

Jan Hugo Dil, Stefan Peter Muff, Mauro Fanciulli, Andrew Patton Weber

Amer Physical Soc2017

Influence of ferroelectric order on the surface electronic structure of BaTiO3 films studied by photoemission spectroscopy

Stefan Peter Muff, Jan Hugo Dil, Mauro Fanciulli, Andrew Patton Weber, Zoran Ristic, Zheng Wang

2018