Adriano Amaricci
  • Home
  • About me
  • CV
  • Publications
  • Research
    • Correlated Topological Insulators
    • Non Equilibrium
    • Mott Transitions
    • Others

New paper "Edge state reconstruction from strong correlations in quantum spin Hall insulators" appeared in Physical Review B

30/5/2017

Comments

 
Quasiparticle weight $Z$ as a function of the interaction strength $U$ for the first few layers
We study the fate of helical edge states in a quantum spin Hall insulators when the whole system is exposed to strong Coulomb interactions. Using dynamical mean-field theory, we show that the dispersion relation of the edge states is strongly affected by Coulomb interactions. In fact, the formerly gapless edge modes become gapped at a critical interaction strength. Interestingly, this critical interaction strength is significantly smaller at the edge than its counterpart in the bulk. Thus, the bulk remains in a topologically nontrivial state at intermediate interaction strengths where the edge states are already gapped out. This peculiar scenario leads to the reconstruction of gapless helical states at the new boundary between the topological bulk and the trivial (Mott insulating) edge.....
Learn more
Comments
    Picture

    Author:

    Adriano Amaricci

    SISSA - CM Group
    Office 417 - 4th floor
    Via Bonomea 265, 
    34136 Trieste, Italy
    tel.: +39 040 3787 505

    fax: +39 040 3787 528​
    ​la differenza tra bufalo e locomotiva salta agli occhi, 
    la locomotiva ha la strada segnata,  

    mentre il bufalo puo' scartare di lato, 
    e cadere...

    Archives

    May 2018
    March 2018
    January 2018
    June 2017
    May 2017
    January 2017

    RSS Feed

Powered by Create your own unique website with customizable templates.
  • Home
  • About me
  • CV
  • Publications
  • Research
    • Correlated Topological Insulators
    • Non Equilibrium
    • Mott Transitions
    • Others