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[Fizinfo] Egzotikus kvantum fazisok csoport szeminariuma


Chronological Thread 
  • From: Balazs Dora <dora AT kapica.phy.bme.hu>
  • To: Fizinfo AT lists.kfki.hu
  • Subject: [Fizinfo] Egzotikus kvantum fazisok csoport szeminariuma
  • Date: Wed, 3 Apr 2013 15:14:13 +0200 (CEST)
  • List-archive: <http://mailman.kfki.hu/pipermail/fizinfo>
  • List-id: ELFT HÍRADÓ <fizinfo.lists.kfki.hu>




MEGHIVO
a BME Fizikai Intezet, Egzotikus kvantum fazisok csoport
szeminariumara:


Doru Sticlet (MPIPKS, Dresden)
"Multiplication of topological phases in two-band tight-binding models"


Insulators and superconductors characterized by a Z topological invariant
allow phases which exhibit any number of protected edge states. To uncover these phases it is not always necessary to consider multiband materials.
We show that they can be realized in two-band tight-binding models with
distant-site couplings. This is exemplified with two cases: a two-dimensional Chern insulator - the Haldane model, and a 1D chiral superconductor supporting Majorana bound states. We also discuss some implications due to the presence of multiple Majorana edge states in the 1D chain.

References:
F.D.M. Haldane, Phys. Rev. Lett., 61, 2015 (1988)
S. Ryu, A. Schnyder, A. Furusaki & A.W.W. Ludwig, New J. Phys., 12, 065010
(2010)
Y. Niu, S.B. Chung, C.-H. Hsu, I. Mandal, S. Raghu & S. Chakravarty, Phys.
Rev. B, 85, 035110 (2012)
S. Tewari & J.D. Sau, Phys. Rev. Lett. 109, 150408 (2012)
D. Sticlet & F. Piechon, Phys. Rev. B, 87, 115402 (2013)
D. Sticlet, C. Bena & P. Simon, Phys. Rev. B, 87, 104509 (2013)

Helye: BME Fizikai Intezet,
Elmeleti Fizika Tanszek
Budafoki ut 8.
Szeminariumi szoba
Ideje: 2013. aprilis 8. hetfo, 14:15.


Minden erdeklodot szivesen latunk.

Dora Balazs










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