Concept

Inversion du champ magnétique terrestre

Publications associées (75)

Permalloy thin films exchange coupled to arrays of cobalt islands

Jürgen Brugger, Marc Antonius Friedrich van den Boogaart

Periodic arrays of elongated cobalt islands exchange coupled to continuous Permalloy thin films were fabricated using silicon nitride stencil masks and the magnetic spin configurations during magnetization reversal were studied with photoemission electron ...

2006

Evidence of high dissipation in magnetization reversal processes of five Co/Cu bilayers

Jean-Philippe Ansermet, Santiago Serrano Guisan

Heat and charge transport perpendicular to the plan in five Co/Cu stacks are studied using AC temperature gradients in the presence of a DC current. Large peaks in AC voltage response versus applied field are observed. This effect, measured only in reversi ...

Elsevier2006

Measurement of the instability threshold for toroidal Alfven eigenmodes in JET plasmas with forward and reversed magnetic field

Ambrogio Fasoli, Duccio Testa

In this paper we have investigated the effect of reversing the direction of the magnetic field and plasma current, hence the ion del B-drift direction, on the instability threshold of toroidal Alfven eigenmodes with toroidal mode number (n) in the range ve ...

2006

Large scale magnetic ﬁelds and coherent structures in nonuniform unmagnetized plasma

Martin Jucker

The properties of streamers and zonal magnetic structures in magnetic electron drift mode turbulence are investigated. The stability of such large scale structures is investigated in the kinetic and the hydrodynamic regime, for which an instability criteri ...

American Institute of Physics2006

Atrial repolarization as observable in the PQ interval

Zenichi Ihara

Objective: To study the involvement of atrial repolarization in body surface potentials. Methods: Electrocardiograms of healthy subjects were recorded using a 64-lead system. The data analysis focused on the PQ intervals, while devoting special attention t ...

2006

Condensation of magnons and spinons in a frustrated ladder

Frédéric Mila

Motivated by the ever-increasing experimental effort devoted to the properties of frustrated quantum magnets in a magnetic field, we present a careful and detailed theoretical analysis of a one-dimensional version of this problem, a frustrated ladder with ...

2006

Ferroelectric gates with rewritable domain nanopatterns for modulation of transport properties in GaN/AlGaN heterostructures

Nava Setter, Jean-François Carlin, Igor Stolichnov, Enrico Colla, Lisa Malin

The concept of field-effect transistor with ferroelectric gate in combination with the advanced technique of direct domain writing is applied for modulation of transport properties of 2D electron gas located close to the interface in a GaN/AlGaN heterostru ...

AIP2005

Fluctuations de l'aimantation induites par des courants de haute densité dans des vannes de spin électrodéposées

Andrea Fabian Montabert

Copper wires each one containing a pseudo-spin valve of Co/Cu/Co were produced by electrodeposition inside nanoporous polycarbonate membranes. These wires have a diameter of 40 nm and a length of 6000 nm of which only 50 nm relates to the spin valve. In or ...

EPFL2004

Rapid reversal of stress induced loss of synapses in CA3 of rat hippocampus following water maze training

Maria del Carmen Sandi Perez, Maria Isabel Cordero Campana

The impact was examined of exposing rats to two life experiences of a very different nature (stress and learning) on synaptic structures in hippocampal area CA3. Rats were subjected to either (i) chronic restraint stress for 21 days, and/or (ii) spatial tr ...

2003

On the effect of high Mg doping on the polarity of GaN

Nicolas Grandjean

A study on the effect of high Mg doping on the microstructure of GaN grown on sapphire is presented. The tendency of Mg to induce a change in polarity is demonstrated. In metalorganic vapour phase epitaxy grown films, pyramidal and columnar inversion domai ...

AIP2001

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