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Archives - News 2012

Spin polarization of the 5/2 fractional quantum Hall state

The fractional quantum Hall (FQH) effect observed in a high quality 2 dimensional electron gas (2DEG) at low temperatures and high magnetic fields is a direct manifestation of electron-electron interactions, which open energy gaps in the density of states for certain fractional occupation of the Landau levels. Fractional quantum Hall states observed for odd denominator fractions are now well understood within the framework of the Laughlin wavefunction, whose quasiparticles carry (...)

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Control superconductivity between two insulators with a electric field

Physicists from the LNCMI took part in the following collaboration: In this Letter, we show that a superconducting two-dimensional electron gas is formed at the LaTiO3/SrTiO3 interface whose transition temperature can be modulated by a back-gate voltage. The gas consists of two types of carriers: a majority of low-mobility carriers always present, and a few high-mobility ones that can be injected by electrostatic doping. The calculation of the electron spatial distribution in the (...)

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Multiferroic materials: rational implementation of ferroelectricity in an organic–inorganic hybrid molecule-based magnet

Multiferroic materials: A novel class of multiferroics based on organic–inorganic hybrid materials is synthesized. The ferromagnetic properties originate from the coordination network, whereas the ferroelectricity results from the polar organic ions (see picture, M=magnetization and P=polarization). (c) Cyrille Train Read the full article here

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The aim of the workshop is to bring together the communities of scientists investigating condensed matter by techniques combining high magnetic fields and synchrotron or neutron facilities. The workshop will be the occasion for the presentation of the recent scientific breakthroughs and instrumental developments performed in the area. It will give the opportunity to evaluate the state of the art, identify ongoing and future projects and the need for further (...)

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The LNCMI helps the Ariane rockets to better fly...

From magnets to rockets; magnetic levitation studies of liquid hydrogen Gravity interferes strongly and universally with many phenomena and processes. Examples range from the boiling of liquids, via crystal growth and the effects of container walls on processes, to cell division in living tissues. To understand and control this influence, one has to study the same phenomena and processes in the absence of gravity, or under microgravity conditions. Such a microgravity environment can be (...)

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