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SUMMARY:Surgical manipulation of collective modes in novel materials
DTSTART:20170130T161500
DTEND:20170130T171500
DTSTAMP:20260427T233502Z
UID:2aaacf6083c11b388bdfdf3cff04a6f8f1151bfa85c83abb9d8b9d18
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Fabrizio Carbone\, Laboratory for Ultrafast Microscopy 
 and Electron Scattering\, SB\, EPFL\nBio: Master degree: University of Pav
 ia "optoelectronic engineering". September 2001.\nReasearch scientist at P
 irelli Labs\, Milan Italy between September 2000 and August 2002.\nPhD in 
 condensed matter physics from the University of Geneva\, prof. van der Mar
 el gorup. January 2007\nPost doc in physical chemistry at Caltech in prof.
  Zewail`s group. March 2007-April 2009\nInherent properties such as low-di
 mensionality\, strong electron-electron correlations\, topological protect
 ion\, and/or nano-fabrication\, multilayer stacking and self-assembly are 
 the fundamental ingredients of materials displaying novel electronic\, opt
 ical\, and mechanical properties.\nMicroscopically\, these phenomena are o
 ften ruled by ordered textures of spins and charges and their concerted mo
 tions. Key to understand and manipulate these states of matter is the abil
 ity to act on specific degrees of freedom externally while being able to m
 onitor at the atomic level in space and time the consequences.\n\nIn this 
 seminar\, I will review the activity of our group in the last few years wi
 th a particular focus on ultrafast transmission electron microscopy. This 
 approach is based on the selective fast manipulation of structural and/or 
 electronic degrees of freedom followed by a real time monitoring of a soli
 d via a combination of time-resolved  diffraction\, spectroscopy and imag
 ing.\n\nWe will show the ability to manipulate the charge density distribu
 tion in a 2D metallic film and the electronic temperature in a single nano
 wire with fs-nm combined precision.\n\nWe will also demonstrate that magne
 tic skyrmions\, a topologically protected whirling distribution of spins\,
  can be manipulated by light and imaged in real-space with few nm resoluti
 on.\nThe implications of these results and the perspectives of these techn
 iques will be also discussed.
LOCATION:CE 1 1 https://plan.epfl.ch/?room==CE%201%201
STATUS:CONFIRMED
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