SISSA CM Seminar by P.P. Baruselli - Thu 18 Dec, 10.00h, room 131

[Erio Tosatti]

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> From: Condensed Matter Seminars <cm_info at lists.sissa.it>
> Subject: [cm_info] CM Seminar by P.P. Baruselli - Thu 18 Dec, 10.00h, room 131
> Date: December 17, 2014 1:28:55 PM GMT+01:00
> To: cm_info at lists.sissa.it
> Reply-To: cm_info at lists.sissa.it
> 
> CONDENSED MATTER SEMINAR
> 
> 
> Pier Paolo Baruselli (TU Dresden)
> 
> "Surface Quasiparticle Interference in Topological Kondo Insulators"
> 
> 
> Thursday 18th December 2014 at 10.00
> 
> Room 131, Santorio Building, SISSA
> 
> Abstract:
> 
> The interplay between strong correlations and topology is a fast-developing and fascinating subject in the field of condensed matter.
> Recently, the existence of topological Kondo insulators (TKIs) has been theoretically proposed [1]. In these materials the insulating behavior arises from strong correlations, that is from the Kondo screening of localized moments via conduction electrons, while non-trivial topology emerges from the structure of the hybridization between the local-moment and conduction bands.
> SmB6, long known as a Kondo insulator, is the main TKI candidate compound [2], and currently subject of intense experimental and theoretical investigation.
> In this talk I will first of all present the concept of TKI and the main properties of SmB6.
> I will then address the more specific problem of Kondo holes and of quasiparticle interference in TKIs, using a self-consistent real-space mean-field theory, first in a toy-model for Ce compounds [3], then in a realistic tight-binding description for SmB6 [4].
> 
> [1] M. Dzero, K. Sun, V. Galitski, and P. Coleman, Phys. Rev. Lett. 104, 106408 (2010)
> [2] T. Takimoto, J. Phys. Soc. Jpn. 80, 123710 (2011)
> [3] P. P. Baruselli and M. Vojta, PRB 89, 205105 (2014)
> [4] P. P. Baruselli and M. Vojta, PRB 90, 201106(R) (2014)
> 
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