[institut] SCL seminar - Branislav Nikolic: What can topological insulators do for spintronics?, petak 16. 8. 2013. u 12:00

[Nenad Vukmirović]

Поштоване колегинице и колеге,

Позивам вас на СЦЛ семинар који ће у петак 16. августа 2013. године у 
12:00 у читаоници Института за физику одржати професор Бранислав К. 
Николић (Универзитет у Делаверу, САД). Наслов семинара је:

What can topological insulators do for spintronics?

Abstract: Topological insulators (TIs) are newly discovered class of 
"Dirac" materials which possess an energy gap in the bulk, akin to 
conventional band insulators, while hosting metallic edge [in two 
dimensions (2D)] or surface [in three dimensions (3D)] states. Their the 
low-energy quasiparticles behave as massless Dirac fermions whose spins 
are locked to their momenta due to spin-orbit coupling of the Rashba 
type which is, however, order of magnitude larger than its more familiar 
counterpart in two-dimensional electron gases within semiconductor 
heterostructures. The TIs have attracted considerable attention by the 
basic research communities, because of offering a platform to probe 
exotic particles borrowed from high energy physics (such as axions, 
magnetic monopoles and Majorana fermions), as well as by the applied 
research communities interested in spintronics and quantum computing. In 
this talk I will discuss possible routes to integrate 2D (such as 
graphene with heavy adatoms) or 3D (such as BiSe layered compounds) TIs 
into spintronic heterostructures with ferromagnets (F) that would make 
it possible to test our theoretical predictions for: (i) quantized spin 
and charge pumping in 2DTI/F heterostructures; (ii) spin-transfer torque 
in vertical and lateral 3DTI/F heterostructures; and (iii) spin-Seebeck 
effect in three-terminal 3DTI/F devices.

Срдачан поздрав,

-- 
Др Ненад Вукмировић,
Виши научни сарадник,
Лабораторија за примену рачунара у науци,
Институт за физику Београд,
Србија.
URL: http://www.scl.rs/nenad