Outreach News

"Exploring the complexity of organic spins using soft X-rays" by Maria Benedetta Casu (Tues, 1 Oct 2019)

The Seminars and Training Committee kindly invites you to the following ICMAB Invited Seminar:

Exploring the complexity of organic spins using soft X-rays

by Maria Benedetta CASU, Institute of Physical and Theoretical Chemistry, University of Tübingen, Germany

Tuesday, 1 October 2019 @ 12 pm
ICMAB - Sala d'Actes Carles Miravitlles

Abstract:

Using soft X-ray spectroscopies, performed also at synchrotrons, we investigate thin film processes, surfaces and interfaces at the nanoscale of organic radicals deposited on metal and metal oxide surfaces. The use of these techniques represents a powerful approach to reveal the mechanisms governing complex interfaces, such as radical/metal and radical/metal-oxide where it is important to describe both charge and spin behavior (spinterfaces).

Inspired by their tremendous potential, we have also investigated thin films of a Blatter radical derivative by using X-ray magnetic circular dichroism (XMCD). We observe X-ray magnetic circular dichroism at the nitrogen K-edge, demonstrating a ferromagnetic behavior of the thin films. Our results show a collective magnetic behavior purely ascribed to light organic elements. We anticipate our work to be a starting point in investigating magnetic behavior in purely organic thin films. The tuning of the magnetic properties by tuning the molecular arrangement in films is an encouraging perspective towards revealing new properties and possible applications.

Hosted by Núria Crivillers, NANOMOL group

20 September 2019