#   Long-range Topological Superconductivity: from Majoranas to non-local massive Dirac fermions 

 



####  calendar\_today Date and Time 

 **November 14, 2017** 

 11:45AM - 12:45PM EST 

####  pin\_drop Location 

 **Harvard University-Department Physics, Lyman 425, 17 Oxford St, Cambridge, MA**  



 

 



 

 Long-range interactions can dramatically modify the phase diagram of condensed matter systems. Novel topological superconducting phases can be induced in both wire-shaped and planar structures by including long-range effects. In 1D, massless Majorana modes at the edge pair into a new topological quasiparticle: a massive Dirac fermion localized at both edges of the wire. This new topological phase has fractional quantum numbers as a consequence of the long-range couplings. Moreover, we remarkably observe a staircase of higher-order topological phase transitions. In 2D, we show how long-range interactions may greatly enhance the formation of chiral topological superconductivity. The inclusion of long-range effects is potentially applicable to recent experiments with magnetic impurities and islands in superconductors.

 Speaker: [Óscar Viyuela](/people/oscar-viyuela), RCC Fellow, Postdoctoral Researcher in Physics at Harvard University



 

 



 

 

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