Talk given by Dr. Svetlana Klyatskaya A major interest in physics, chemistry and materials science is the interface between solid-state physics and functional molecular systems. The bottom-up synthetic approach takes advantage of the intrinsic physical properties of a molecule, of which billions atomically precise copies can be synthesized by chemical methods. Moreover, molecular systems can be organized by surface-confinement and self- assembly protocols using their respective components (organic molecules, metal ions, complexes, etc.) towards complex systems at the organizational level. Beyond this, the molecules often exhibit a wide range of electronic, magnetic, and spintronic properties of fundamental interest and practical importance, thus opening bright avenue towards novel functional nanosystems. In this talk I will present results from the close collaboration of groups from synthetic chemistry [1] and experimental physics exploring magnetic molecules as building bricks for spintronics devices [2-4]. In this context, the investigation of quantum properties of a single nuclear-spin is a demanding goal. The molecular spin-transistor fabricated allowed for an electrical, non-destructive read-out of the nuclear spin state. Exploiting this property we were able to measure the real-time quantum trajectory of an isolated nuclear spin qubit [5]. Thereby, the herein presented spintronic devices are rationally designed by implementing and controlling magnetic molecules in device environments [6]. Moreover, recent results on the bottom-up surface functionalization by simple molecular building bricks exploring the emergence of hierarchy, functionality and complexity at the organizational level will be discussed [7, 8]. In particular this approach has given rise to novel covalent sp-sp2 all carbon networks, representing two-dimensional carbon allotropes of graphene [9, 10]. [1] a) Klyatskaya S., Galán Mascarós J.-R.; Bogani L., Hennrich F., Kappes M., Wernsdorfer W.; Ruben M. J. Am. Chem. Soc. 131(42), 2009, 15143; b) Klyatskaya S., Eichhöfer A., Wernsdorfer W. „X-ray crystallographic analysis of the pyrene-substituted heteroleptic unsymmetrical bis(phthalocyaninato) Tb(III) SMM", submitted. [2] Urdampilleta M., Klyatskaya S., Cleuziou J.-P., Ruben M., Wernsdorfer W. Nature Materials, 10(7), 2011, 502. [3] Vincent R., Klyatskaya S., Ruben M., Wernsdorfer W., Balestro F. Nature, 488, 2012, 357. [4] Ganzhorn M., Klyatskaya S., Ruben M., Wernsdorfer W. Nature Nanotechnology, 8, 2013, 165. [5] Thiele S., Balestro F., Ballou R., Klyatskaya. S., Ruben M., Wernsdorfer W. "Electrically driven nuclear spin resonance in single- molecule magnets", submitted [6] Schwöbel J., Fu Y., Brede J., Dilullo A., Hoffmann G., Klyatskaya S., Ruben M., Wiesendanger R. Nature Comms. 3, 2012, 953. [7] Marschall M., Reichert J., Weber–Bargioni A., Seufert K., Auwärter W., Klyatskaya S., Zappellaro G., Ruben M., Barth J.V. Nature Chemistry, 2, 2010, 131. [8] Klyatskaya S., Klappenberger F., Schlickum U., Kühne D., Marschall M., Reichert J., Decker R., Krenner W., Zoppellaro G., Brune H., Barth J.V., Ruben M. Adv.Funct.Mater. 21, 2011, 1230 (review). [9] Zhang Y.Q., Kepcija N., Kleinschrodt M., Diller K., Fischer S., Papageorgiou A.C., Allegretti F., Björk J., Klyatskaya S., Klappenberger F., Ruben M., Barth J. V. Nature Comms. 3, 2012, 1286. [10] Cirera B. Zhang Y.-Q., Björk J., Klyatskaya S., Chen Z., Ruben M., Barth J.V., Klappenberger F. Nano Letters, 2014, 14, 1891.

This event is part of the eventgroup INT Talks

Homepage
https://www.int.kit.edu/events.php

Speaker
Dr. Svetlana Klyatskaya

Karlsruhe Institute of Technology (KIT)
Institute of Nanotechnology (INT)

Organizer
Prof. Dr.-Ing. Horst Hahn
Institute of Nanotechnology (INT)
Karlsruhe Institute of Technology (KIT)
Eggenstein-Leopoldshafen
Mail: horst hahn ∂does-not-exist.kit edu

Targetgroup
Interested / Everyone