Highlights 2017

November 2017

20-11-2017
Contact : Eva Monroy
Researchers at INAC-PHELIQS-NPSC have developed new approaches for the detection of ultraviolet/infrared light using single GaN nanowires. Results have led to the demonstration of the first photodetector-in-a-wire based on intersubband transitions, i.e. electron transitions within quantum-confined ... More »
15-11-2017
Contact : David Aradilla
Three different services, SyMMES, MEM and PhELIQS from INAC institute, have been working together during the last year and a half within the framework of a collaborative intern project dealing with nitrogen doped-vertically oriented graphene nanosheets (N-VOGNs) for supercapacitor applications. The ... More »
08-11-2017
Radiation robust circuit design for harsh environments like space is a big challenge for IC design and embedded systems. As circuits become more and more complex and CMOS processes get denser and smaller, their immunity towards particle strikes decreases drastically. Spintec proposed a novel ... More »
 

October 2017

18-10-2017
Integration of charge sensors for the readout of semiconductor quantum bits (qubits) is required for a realistic realization of scalable quantum computer. Such charge-sensitive devices, however, involve a significant overhead in terms of gates and contact leads, posing an issue for scalability ... More »
13-10-2017
In the context of the study of the interplay between magnetism and superconductivity, a phase transition has been evidenced as a function of magnetic field between two phases having identical magnetic symmetry. Since this effect cannot be magnetically driven, it implies a modification of the nature ... More »

September 2017

29-09-2017
Contact : Hélène Bea
Nanoscale magnetic skyrmions are good candidates for data manipulation and storage in spintronic applications (logic and/or memory). A team from INAC/SPINTEC has recently shown that a gate voltage can nucleate or annihilate skyrmions. This proof of concept of a skyrmion switch paves the way towards ... More »
11-09-2017
Contact : David Aradilla
Rodrigo Newell has received an award by the Société Chimique de France (SCF - Subdivision Electrochimie) within the framework of his master project conducted at INAC/SyMMES/STEP under the supervision of Dr. Aradilla. The prize is a recognition for his work dealing with the development ... More »
04-09-2017
Uranium is a natural element widely found in the environment, due to both natural occurrence in mineral ores or in sea water and industrial applications. The production of nuclear energy uses enriched uranium in 235U for nuclear fission. Despite its ubiquitous distribution, uranium has no essential ... More »
 

August 2017

29-08-2017
Contact : Julien Claudon
Researchers have succeeded in coupling a semiconductor quantum dot to a vibrating wire. The quantum dot is then able to detect the mechanical vibrations of the wire with very high sensitivity. This result, obtained within a collaboration between INAC and the University of Basel, opens new ... More »
22-08-2017
Jean-Pierre Nozières, Spintec researcher in magnetic devices, is one of the winners of the Innovation Medal of the CNRS “cuvee” 2017 at 54 years old. Since 2011, this distinction has been awarded for outstanding scientific research leading to a remarkable innovation, whether in ... More »

July 2017

21-07-2017
Contact : Matthieu Jamet
Germanium is one of the most appealing candidate for spintronic applications, thanks to its compatibility with the Si platform, the long electron spin lifetime and the optical properties matching the conventional telecommunication window. Electrical spin injection schemes have always been exploited ... More »
21-07-2017
Contact : Joël Emery
The properties of hard X-ray to excite light emission can be combined simultaneously with X-ray fluorescence techniques to study nanoscale devices as demonstrated for multiple quantum well (MQW) InGaN/GaN core/shell wires integrated in blue LED emitters. This study allowed us to understand the ... More »
17-07-2017
Contact : Mair CHSHIEV
Advancing spintronic devices requires using novel 2D materials including graphene with featured properties. In particular, a significant effort has been focused on injecting spins and inducing magnetism in graphene giving rise to emerging field of graphene spintronics. It is demonstrated that ... More »
 

June 2017

28-06-2017
The development of sensitive and compact readout tools of quantum states is a central issue in the run to industrial scalability of semiconductor quantum bits (qubits). We employ the gates of industrial silicon Field-Effect Transistors (used as qubits) as radio-frequency resonators integrated in ... More »
 

May 2017

24-05-2017
Several groups have already reported the fabrication of nanotubes, but such structures exhibit usually poor light emission performances. Indeed, the surface states and defects favor the non-radiative recombination processes that quench light emission. To overcome this problem, we have developed a ... More »
23-05-2017
  We have developed arrays of innovative magnetic nanotweezers or “nanojaws” on silicon wafers, by a top-down approach using the fabrication techniques of microelectronics.   The mechanical manipulation of micro- and nanometric objects relies on constantly evolving ... More »
03-05-2017
Contact : Julien Claudon
A new class of optoelectronic devices, such as single-photon sources, is based on semiconductor quantum dots (QDs) embedded in a photonic structure. Nowadays, the best QDs are still obtained via a self-assembly process: these emitters are thus randomly located in the structure. Pinpointing the ... More »
03-05-2017
Contact : Gilles Gaudin
We have created an analytical model of spin waves in microscopic spin-wave waveguides in the presence of interfacial Dzyaloshinskii-Moriya interaction. By comparing to micromagnetic simulations, we have demonstrated that spatially periodic excitation sources can be used to create a uni-directional ... More »

April 2017

12-04-2017
In a metal the energy levels of the electrons, which have to be all in different quantum states due to the Pauli exclusion principle, are filled up to the Fermi energy at zero temperature. The surface of constant energy in the reciprocal space separating occupied and unoccupied electronic states is ... More »
 

March 2017

03-03-2017
Contact : Gaël De Paepe
Katharina Märker (PhD student, MEM/RM) was awarded the Ernst Award during the Annual Meeting of the German Magnetic Resonance Discussion Group in Düsseldorf. At this occasion she had the opportunity to present her recently published work on NMR crystallography. The Ernst award was ... More »
 

February 2017

27-02-2017
Combined extreme conditions of high pressure and strong magnetic field are an extremely powerful tool to tune microscopic interactions in order to attain and study new states of matter. While high pressure measurements in static magnetic fields present no particular difficulty, the maximum static ... More »
22-02-2017
Contact : Mathieu Jamet
We have fabricated large-scale two-dimensional transition metal dichalcogenide (2D TMD) MoSe2, a promising candidate for electronics, valley-spintronics and optoelectronics, on insulating sapphire and have investigated its structural and transport properties. We have shown that the layered MoSe2 ... More »
07-02-2017
Contact : Matthieu Jamet
We have demonstrated the spin-to-charge interconversion by Rashba coupling at the interface between two light materials: iron and germanium which is compatible with today’s CMOS technology. This result constitutes the first step towards the fabrication of a spin transistor based on the ... More »
02-02-2017
Moiré patterns are superlattice structures that appear when two crystals with a lattice mismatch or with a different orientation are superimposed. We have developed a universal classification of all possible periodic Moirés in order to determine their exact crystallographic ... More »

January 2017

10-01-2017
Contact : Stefano Mossa
Veerapandian Ponnuchamy, Ioannis Skarmoutsos, Stefano Mossa - INAC/SYMMES Valentina Vetere - LITEN/DEHT The electrolyte is a crucial component of a Lithium-ion battery. On one side, it affects the rate of the energy release, by controlling the mass transport properties within the cell. It ... More »
06-01-2017
Contact : Manon Tardif
We demonstrate the optical trapping of living objects with an integrated SOI microcavity and the discrimination of three different types of bacteria based on the analysis of the trapped bacterium interactions with the electromagnetic field of the cavity. Bacteria are an important subject of ... More »
05-01-2017
Contact : Bernard Dieny
Magnetic field mapping techniques have continuously been developed due to the necessity for determining the spatial components of local magnetic fields in many industrial applications and fundamental research. Several factors are considered for sensors such as spatial resolution, sensitivity, ... More »
 

 

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