Concept

Electric dipole spin resonance

Publications associées (270)

Influence of the substrate on the spin-orbit splitting in surface alloys on (111) noble-metal surfaces

Klaus Kern, Marco Grioni, Christian Reinhard Ast, Luca Moreschini

We have studied by angle-resolved photoelectron spectroscopy the ordered XCu2 surface alloys formed by X=Sb and Bi on a Cu(111) substrate. We found clear analogies with the corresponding XAg2 alloys formed by the same elements on Ag(111). The electronic st ...

2009

Weak-and strong-coupling limits of the two-dimensional Frohlich polaron with spin-orbit Rashba interaction

Claudio Grimaldi

The continuous progress in fabricating low-dimensional systems with large spin-orbit couplings has reached a point in which nowadays materials may display spin-orbit splitting energies ranging from a few to hundreds of meV. This situation calls for a bette ...

2008

Energy levels of a two-dimensional hydrogen atom with spin-orbit Rashba interaction

Claudio Grimaldi

Electronic bound states around charged impurities in two-dimensional systems with structural inversion asymmetry can be described in terms of a two-dimensional hydrogen atom in the presence of a Rashba spin-orbit interaction. Here, the energy levels of the ...

2008

Spin-orbit split two-dimensional electron gas with tunable Rashba and Fermi energy

Klaus Kern, Marco Grioni, Luca Moreschini, Daniela Pacilè

We demonstrate that it is possible to tune the Rashba energy, introduced by a strong spin-orbit splitting, and the Fermi energy in a two-dimensional electron gas by a controlled change of stoichiometry in an artificial surface alloy. In the BixPb1-x/Ag(111 ...

2008

Innovative devices for electron spin resonance spectroscopy on small samples

Malika Bouterfas

Within the past few years, the field of Electron Spin Resonance has become an important tool in physical, chemical and biological research. However, in many cases its usefulness is limited by the sensitivity of the experimental setup. A typical example is ...

EPFL2008

Single-chip detector for electron spin resonance spectroscopy

Giovanni Boero

We have realized an innovative integrated detector for electron spin resonance spectroscopy. The microsystem, consisting of an LC oscillator, a mixer, and a frequency division module, is integrated onto a single silicon chip using a conventional complement ...

2008

Effects of homonuclear scalar couplings during multiple refocusing sequences in nuclear magnetic resonance

Nicolas Aeby

Multiple refocusing cycles can be used to extract transverse relaxation rates, R2, while homonuclear scalar couplings do not interfere. In this work, I have demonstrated the usefulness of a hybrid sequence, which is a compromise between single and multiple ...

EPFL2008

Effect of rare-gas adsorption on the spin-orbit split bands of a surface alloy: Xe on Ag(111)-(root 3 x root 3) R30 degrees-Bi

Marco Grioni, Christian Reinhard Ast, Luca Moreschini

We have investigated by angle-resolved photoemission spectroscopy changes induced by Xe adsorption on the spin-orbit-split bands of the epitaxial Ag(111) (root 3x root 3)R30 degrees-Bi surface alloy. We observe an extensive backfolding of the alloy band st ...

2008

Electron spin resonance in alkali doped SWCNTs

László Forró, Bálint Náfrádi

Electron spin resonance (ESR) measurements on SWCNTs doped with alkali atoms (potassium) using a solid state reaction is reported. We find the emergence of the ESR signal of itinerant electrons upon doping with a signal intensity that is comparable to that ...

2008

Charge transition levels of the Ge dangling bond defect at Ge/insulator interfaces

Alfredo Pasquarello, Peter Broqvist, Audrius Alkauskas

We calculate defect levels of dangling bonds in germanium using hybrid density functionals. To validate our approach, we first consider the dangling bond in silicon finding two well-separated defect levels, in excellent correspondence with their experiment ...

2008

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