GEMAC

Our laboratory

The main mission of GEMaC laboratory is to run fundamental research with perspectives of application in the fields of physics and material science for tomorrow's electronics and information processing and storage.

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Our research

The research activities of our lab are based on a common expertise in physics and material science in the field of wide gap semiconductors, functional magnetic oxides, molecular materials and nanooptics.

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Experimental facilities

The research activities in GEMaC are based on an important experimental infrastructure dedicated to material elaboration, growth, and characterisation, as well as investigation of their properties.

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2023 master thesis offers

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GEMaC inauguration

SIMS analyser

Julien Barjon, diamond researcher

Tribute to Yogendra

The members of GEMaC join the family and friends of Dr. Yogendra Singh, who passed away recently, with sadness and grief. Our thoughts are with his parents, his fiancée and his friends, who have been greatly affected by this loss.

Reaching GEMaC

GEMaC laboratory is located on the campus of the UFR des sciences in Versailles (France), Fermat building, 45 avenue des États-Unis.

Last PhD and habilitation defences

Propriétés optiques du phosphore noir : du cristal massif aux couches atomiques

June 23, 2022

Propriétés optiques de nanosources de lumière hybrides or/semi-conducteur

June 10, 2022

Croissance et caractérisation de nanofils ZnS : une étude du polytypisme

March 8, 2022

» Defence agenda

Last seminars and colloquia

1st national workshop "Gallium owide ultra wide band gap material for energy electronics"

January 26, 2023

Spin-Hall Effect including screening: presence of longitudinal pure spin-current

October 18, 2022

E-MRS Fall 2022 : Ultra-wide Bandgap Semiconductors Symposium

September 19, 2022 - September 22, 2022

1st GDR-IRN Howdi meeting: proposals for contributions are now closed!

May 9, 2022 - May 13, 2022

Bipolar conductivity by self-doping in ultra-wide band gap semiconductor Spinel ZnGa2O4

November 15, 2021

All the seminars and colloquia

Highlights

	Gallium oxide pushes the limits of silicon for power electronics May 25, 2022 Editor’s Choice and one of the most downloaded papers of the ‘Materials’ (MDPI) journal in the first five months of the year, this review discusses the application of ultra-wide bandgap semiconductors in power electronic devices, focusing in particular on gallium oxide.
	A new theoretical approach reveals the emergence of complex self-organised structures in spin crossover materials January 31, 2022 Researchers from GEMaC laboratory have developed an effective electro-elastic model to simulate phase transitions in spin crossover crystals. The resolution of this model is 50 times faster than the traditionally used model, which has allowed them to reveal a wide variety of complex phenomena.
	A series of discoveries about the incredible conductive and transparent materials known as vanadates. November 14, 2021 Strontium and calcium vanadates (SrVO3 and CaVO3) are perovskite oxides. They are materials with multiple potential functions and applications. Here is an overview of recent advances, to which GEMaC has made a major contribution.
	A material conducts to a bright future September 17, 2021 GEMaC researchers show how the conductivity of the spinel material ZnGa2O4 can be controlled over a very wide range, opening up applications in ultra-high power electronics and deep ultraviolet optoelectronics.
	A new crystal phase in semiconductor nanowires June 25, 2021 GEMaC researchers, in partnership with the LEM (CNRS-Onera), have produced and characterised an original and unexpected crystal structure in nanoscale zinc sulphide (ZnS) wires.