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[Fizinfo] Meghívó Prof. Jaroslav Fabian előadására


Chronological Thread 
  • From: SIMON Ferenc <simon AT esr.phy.bme.hu>
  • To: fizinfo AT lists.kfki.hu
  • Subject: [Fizinfo] Meghívó Prof. Jaroslav Fabian előadására
  • Date: Wed, 27 May 2015 20:44:39 +0200 (CEST)

MEGHÍVÓ

A BME Fizika Tanszék szemináriumára:

Prof. Jaroslav Fabian
University of Regensburg

Spin phenomena in two dimensional materials

Időpont: 2015. június 1 (hétfő) 10.00
Hely: BME, F. epulet, I. lépcsőhaz, 1. emelet, Schay terem
megközelítes: https://www.google.hu/maps/ AT 47.479918,19.0547192,19z

Rövid bemutatás:
Jaroslav Fabian a spintronikai kutatások egyik meghatározó alakja. Összefoglaló munkáját a területen (Rev. Mod. Phys. 76, 323)
több mint 4.500-an hivatkozták. Jelenlegi munkái a grafén - mint ígéretes spintronikai alapanyag - spin-relaxációs problémáira
irányulnak.

Minden érdeklődőt szeretettel várunk!
Üdvözlettel
Simon Ferenc

Abstract:
Two dimensional materials, such as graphene, transition metal dichalcogenides, or black phosphorous, offer immense opportunities
for electronics and spintronics [1]. Being ultimately thin these materials could make the thinnest diodes and transistors, or the
thinnest magnetic sensors and read heads. Being essentially a surface, they are also susceptible to adatoms and admolecules which
can induce local magnetic moments and giant spin-orbit coupling [2]. This is in fact a great opportunity, allowing us to decorate
(functionalize) graphene and like materials with specific defects to make desired properties. I will review the essential spin
physics of novel two dimensional materials, including spin-orbit coupling and magnetic moments, and discuss the ramifications of
the (intended and non-intended) functionalization for spin transport experiments. Most of the results are obtained by performing
first principles calculations on large atomic supercells, necessary to study the physics in the dilute defect limit. These
calculations show a nice agreement with experiments regarding spin relaxation in single [3] and bilayer [4] graphene, but also
make authoritative predictions for future realistic charge and spin based device---an example is given by optospintronics in
graphene/TMC structures.
[1] W. Han, R. Kawakami, M. Gmitra, and J. Fabian, Nature Nanotechnology 9, 794 (2014).
[2] M. Gmitra, D. Kochan, and J. Fabian, Phys. Rev. Lett. 110, 246602 (2013).
[3] D. Kochan, M. Gmitra, and J. Fabian, Phys. Rev. Lett. 112, 116602 (2014).
[4] D. Kochan, S. Irmer, M. Gmitra, and J. Fabian, arXiv:1504.03898


----------------------------
Prof. Ferenc SIMON (PhD, DSc)
professor @ TU-Budapest
privatdozent @ Uni Wien
http://dept.phy.bme.hu/staff/simon/simon.html
http://homepage.univie.ac.at/Ferenc.Simon/
skype: ferisimon
Dept. of Physics Budapest Univ. of Techn. and Econ.
H 1521 Budapest POBox 91 HUNGARY
ph. lab.: (36-1) 463-1215
ph. secr.(hung. only) (36-1) 463-1438
fax: (36-1) 463-4180
mob.: 36-30-452-4705


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