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LNCMI-T (UPR 3228) 143 avenue de Rangueil 31400 Toulouse, France

Post Doctoral Position in Nanoelectronics The recent control of metallic nano-objects (NOs) synthesis opens new routes regarding the

bottom-up approach of electronic device fabrication. They can be foreseen as active or interconnecting parts of the next generation of complex logic circuits [1], as well as efficient chemical sensors due to their large aspect ratio and environmental sensitiveness [2]. However, fundamental studies are still required. In this framework, a consortium of 3 laboratories (Laboratoire de Physique et Chimie des Nano-Objets - LPCNO, Centre d’Elaboration des Matériaux et d’Etudes Structurales – CEMES, Laboratoire National des Champs Magnétiques Intenses, LNCMI) aims at controlling and exploring the main NOs features from synthesis to electronic transport properties. The involved research teams have long-term experience in:

• The chemical synthesis of NOs and the modulation of their physico-chemical properties • The controlled deposition of NOs by nanoxerography technique • The electrical addressing of NOs by stencil and EBeam lithography or FEBID (Focused

electron beam ion deposition) • Electronic transport at low temperature and high magnetic field As part of this project, a 12 months post-doctoral position is available at LNCMI-Toulouse. In

strong interaction with the other laboratories, the successful candidate will focus on two types of NOs: gold (Au) nano-wires (fig.1-a) and platinium (Pt) nano-stars (fig.1-b). Due to a strong confinement of the electronic wave-function at the nanoscale (the typical dimensions range between 5nm to 50nm), only a limited number of conduction channels are allowed. Therefore, such NOs are likely to exhibit wave-guide like quantum transport at low temperature [3]. While the quasi-one dimensional Au nano-wires may exhibit non-Fermi liquid behavior due to strong electronic interactions, Pt 3-fold nano-stars constitute ideal nano-systems in order to explore non-local transport phenomena in the ballistic regime.

This experimental activity focuses on major sticking points inherent to electronic transport as well as the electrical addressing of NOs. Hence, the successful candidate will be in charge of deposition, characterization and nano-connexion of individual NOs making use of high precision e-beam lithography and stencil lithography. He will also conduct magneto-transport measurements at low temperature in order to investigate on the fundamental charge transport regime of these NOs.

Candidate profile: a physicist with strong expertise in nanotechnology and clean-room processes. Experience in electrical transport measurement would be appreciated. Contacts : Walter Escoffier (LNCMI) : walter.escoffier@lncmi.cnrs.fr, 05 62 17 29 70 Lacroix Lise-Marie (NanoChemistry group, LPCNO): lmlacroi@insa-toulouse.fr, 05.61.55.96.63 [1] C. Wang et. al. J. Am. Chem. Soc. 130, 8902 (2008) [2] A. Kisner et. al. Nanoscale 6, 5146 (2014) ; [3] S. Pud et. al. Small 9, 846 (2013) ; U. Chandni et. al. ACS Nano 58398 (2011) ; A. Loubat et. al. Nano Res. 6, 644 (2013) [4] A. Loubat et al. Langmuir, 30, 4005 (2014) [5] L.-M. Lacroix et al., Angew. Chem. Int. Ed, 51, 4690 (2012)

Figure 1. TEM image of (a) Au nanowires and (b) Pt stars. From [4,5]