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Probing the Fe<SUP>2+</SUP>/Fe<SUP>3+</SUP> mixed-valence state in magnetic semiconductor Fe oxides at the atomic scale... and evidencing an expected charge ordering

8 February 2014

Probing the Fe<SUP>2+</SUP>/Fe<SUP>3+</SUP> mixed-valence state in magnetic semiconductor Fe oxides at the atomic scale... and evidencing an expected charge ordering

We reveal the direct experimental evidence of Fe2+/Fe3+ charge ordering at room temperature in hematite-ilmenite Fe1.35Ti0.65O3-δ (FTO) thin films using the NION UltraSTEM 200 aberration-corrected scanning transmission electron microscopy (STEM) coupled to high-resolution energy electron-loss spectroscopy (EELS).

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Spatially Resolved Quantum Nano-Optics of Single Photons Using an Electron Microscope

7 February 2014

Spatially Resolved Quantum Nano-Optics of Single Photons Using an Electron Microscope

LPS researchers fabricated a single photon source by exciting a color center in a nanodiamond using a nanometer-wide electron beam. This new excitation method, having a much better spatial resolution than the optical excitation, paves the way for the study of quantum emitters that are closely packed.

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Ancel Prize 2012 awarded to Odile Stéphan

7 October 2013

Ancel Prize 2012 awarded to Odile Stéphan

The Louis Ancel Prize of the French Physics Society was awarded to Odile Stéphan in acknowledgment of the importance and the quality of her scientific production and of her national and international recognition.

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A viral capsid assembled in a X-ray beam

1 October 2013

A viral capsid assembled in a X-ray beam

The simplest viruses are made of a protein shell – the capsid.

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One diamond + one defect = a very sensitive magnetic microscope

1 October 2013

One diamond + one defect = a very sensitive magnetic microscope

The defect in diamond, called a NV center is like an artificial atom the luminescence ...

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