[hep-th] PROMENA TERMINA, SCL Seminar: Vladimir Juricic, petak 5. april u 11:00

[Nenad Vukmirovic]

Postovane koleginice i kolege,

Doslo je do promene termina dole najavljenog seminara koji ce odrzati 
Vladimir Juricic. Seminar ce se odrzati u petak 5. aprila u 11:00 u 
citaonici Instituta za fiziku.

Izvinjavam se zbog visestrukog slanja poruka vezanih za isti seminar.

Srdacan pozdrav,

-- 
Dr Nenad Vukmirovic,
Visi naucni saradnik,
Laboratorija za primenu racunara u nauci,
Institut za fiziku Beograd,
Srbija.
URL: http://www.scl.rs/nenad

On 03/27/2013 01:52 PM, Nenad Vukmirovic wrote:
> Postovane koleginice i kolege,
>
> Pozivam vas na seminar koji ce u petak 29. marta 2013. godine u 11:00 u
> citaonici Instituta za fiziku odrzati Vladimir Juricic sa Univerziteta u
> Lajdenu. Naslov seminara i apstrakt su dati u nastavku ove poruke.
>
> Title: The Space Group Classification of Topological Band-Insulators
>
> Abstract:
>
> Topological band insulators are bulk insulating states of matter which
> in the presence of time-reversal invariance feature metallic states at
> their edge or surface [1]. This state of quantum matter has been
> recently experimentally realized in the HgTe quantum wells.
>
> I will first introduce the concept of topological band insulators and
> then discuss the role of crystal symmetries in the physics of these
> states of quantum matter. I will derive the classification of
> topological band insulators protected not only by time-reversal, but
> also by space group symmetries [2]. I will show that there are three
> broad classes of topological states: (a) Gamma-states robust against
> general time-reversal invariant perturbations; (b)
> Translationally-active states protected from elastic scattering, but
> susceptible to topological crystalline disorder; (c) Valley
> (crystalline) topological insulators sensitive to both non-topological
> and crystalline disorder. I will show how some of these states can be
> realized in two dimensions when the tight-binding M-B model, originally
> introduced for the HgTe quantum wells, is generalized to include
> longer-range hoppings. I will also discuss probing of these states by
> magnetic pi-fluxes and lattice dislocations [3]. Finally, I will
> consider some experimental implications of our classification scheme.
>
> [1] For recent reviews, see  M. Z. Hasan and C. L. Kane, Rev. Mod. Phys.
> 82, 3045 (2010); X. L. Qi and S. C. Zhang, Rev. Mod. Phys. 83, 1057
> (2011).
>
> [2] R.-J. Slager, A. Mesaros, V. Juricic, and J. Zaanen, Nature Physics
> 9, 98 (2013).
>
> [3] V. Juricic, A. Mesaros, R.-J. Slager, and J. Zaanen, Phys. Rev.
> Lett. 108, 106403 (2012).
>
>
> Srdacan pozdrav,
>