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H2020 Marie Sklodowska Curie Individual Fellowships (PHONTOP Project)

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ICN2 is a renowned research centre. Its research lines focus on the newly discovered physical and chemical properties that arise from the behaviour of matter at the nanoscale.

The Institute promotes collaboration among scientists from diverse backgrounds (physics, chemistry, biology, and engineering) to develop basic and applied research, while seeking out new ways to interact with local and global industry.

It also offers researchers training in nanotechnology, develops numerous activities to promote and enable the uptake of nanotechnology by industry, and promotes networking among scientists, engineers, technicians, business people, society, and policy makers.

ICN2 was accredited in 2014 as a Severo Ochoa Centre of Excellence and is a founding member of the Barcelona Institute of Science and Technology (BIST). The aim of the Severo Ochoa Program, sponsored by the Spanish Ministry of Economy, Industry and Competitiveness, are to identify and support those Spanish research centres that demonstrate scientific leadership and impact at global level.

Job Title:  H2020 Marie Sklodowska Curie Individual Fellowships (MSCA-IF 2017)

https://ec.europa.eu/research/participants/portal/desktop/en/opportunities/h2020/topics/msca-if-2017.html

Research area or group:

The 16-strong Phononic and Photonic Nanostructures (P2N) group at ICN2 is led by the ICREA research professor Clivia M. Sotomayor Torres.

http://icn2.cat/en/phononic-and-photonic-nanostructures-group 

The group investigates the interactions between phonons, photons and electrons in nano-scale condensed matter with a long-term view to develop new information technology concepts where information processing is achieved with novel or multiple state variables. Experimental work is carried out on nanophononics including nano-scale thermal transport and opto-mechanical crystals at the cross roads between nanotechnology and dispersion relation engineering. The research in nanophotonics is focused on localisation and more recently metamaterials.

We use state-of-the-art linear optical spectroscopy methods, pump-and-probe down to 10's of femtoseconds and develop new techniques to reach the nanoscale in thermal transport, most notably Laser Raman thermometry.

Over the years we have gathered expertise in periodic nanostructures to control the flow of light and phonons as well as their interactions. A natural development is to explore topological matter.

Project Description:

PHONTOP: Generation and Control of Coherent Phonons in two-Dimensional Materials: From Graphene to Topological Insulators

The miniaturization trend of the technology has led to levels of power densities exceed 100 watts/cm2, which are in the order of heat produced in a nuclear reactor. As a consequence, control and engineering of phonons in the nanoscale is essential for tuning desirable physical properties in a device in the quest to find a suitable compromise between performance and power consumption. Other consequence of the continuous downscaling is that the Si-based technology is reaching their physical and technological limits[1]. As a consequence, the 2D-LMs are presented as convenient alternative to overcome these limitations. From the broad advances of the graphene technology a large variety of 2D-LMs have been explored, such as: gallium chalcogenides (GaX, X = S, Se, Te), transition metal dichalcogenides (WS2, WSe2, MoS2), metal halides (PbI2, MgBr2), metal oxides (MnO2, MoO3), topological insulators (Bi2Se3, Bi2Ti3), among others. In general, 2D-LMs present layer-dependent properties, which are often not observed in their bulk counterpart.

Despite the large scientific interest of these materials, the study of phonon-dynamics in the sub-THz regime remains uncovered. Due to the low energy of these modes, with energy below of 5 meV (~ 40 cm-1, ~ 1 THz), the observation of these modes have been extremely challenging. In general, these energies are completely suppressed by the notch or edge filter in the common Raman equipment.

The focus of this project is to investigate, model and explore the coherent phonon propagation in two-dimensional layered materials, 2D-LMs, towards a development of high-frequency nanoresonators and the spintronics technology. The long term aim is to explore the generation, manipulation and detection of coherent phonons in order to lay the foundation of the basis for phonon-based technology in 2D-LMs. The expected outcomes from this proposal will lead to a better understanding the phonon dynamics in such materials and, as consequence, it will clarify the necessary inputs for the improvement of beyond graphene technology.

How to apply:

All applications must be sent to Emigdio Chavez Angel (Emigdio.chavez@icn2.cat ) and include the following:

1.              A full CV including contact details.

2.              Statement of research in relation to this project proposal.

Deadline for applications: 30th June 2017.

Equal opportunities:

ICN2 is an equal opportunity employer committed to diversity and inclusion of people with disabilities.