Emmanouil Frantzeskakis

Cette personne n’est plus à l’EPFL

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Publications associées (15)

Band structure scenario for the giant spin-orbit splitting observed at the Bi/Si(111) interface

Marco Grioni, Emmanouil Frantzeskakis

The Bi/Si(111) (root 3 x root 3)R30 degrees trimer phase offers a prime example of a giant spin-orbit splitting of the electronic states at the interface with a semiconducting substrate. We have performed a detailed angle-resolved photoemission spectroscop ...

2010

Silicon Surface with Giant Spin Splitting

Klaus Kern, Marco Grioni, Emmanouil Frantzeskakis, Christian Reinhard Ast

We demonstrate a giant Rashba-type spin splitting on a semiconducting substrate by means of a Bi-trimer adlayer on a Si(111) wafer. The in-plane inversion symmetry is broken inducing a giant spin splitting with a Rashba energy of about 140 meV, much larger ...

American Physical Society2009

Giant spin-orbit splitting in a surface alloy grown on a Si substrate: BiAg2/Ag/Si(111)

Marco Grioni, Emmanouil Frantzeskakis

We report on the formation of a BiAg2/Ag/Si(1 1 1) trilayer system which exhibits a giant Rashba spin-splitting of its surface-localized states and is grown on a semiconducting substrate. Angle-resolved photoelectron spectroscopy (ARPES) results reveal the ...

2009

Tunable Spin Gaps in a Quantum-Confined Geometry

Marco Grioni, Emmanouil Frantzeskakis

We have studied the interplay of a giant spin-orbit splitting and of quantum confinement in artificial Bi-Ag-Si trilayer structures. Angle-resolved photoelectron spectroscopy reveals the formation of a complex spin-dependent gap structure, which can be tun ...

American Physical Society2008

Recent ARPES experiments on quasi-1D bulk materials and artificial structures

Marco Grioni, Emmanouil Frantzeskakis

The spectroscopy of quasi-one-dimensional (1D) systems has been a subject of strong interest since the first experimental observations of unusual line shapes in the early 1990s. Angle-resolved photoemission (ARPES) measurements performed with increasing ac ...

2008

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