Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Pertsova, Anna"'
Publikováno v:
Phys. Rev. B 104, L201102 (2021)
Topological insulator (TI) thin films with surface magnetism are expected to exhibit a quantized anomalous Hall effect (QAHE) when the magnetizations on the top and bottom surfaces are parallel, and a quantized topological magnetoelectric (QTME) resp
Externí odkaz:
http://arxiv.org/abs/2107.02410
Publikováno v:
Phys. Rev. Research 3, 033001 (2021)
We suggest the tried approach of impurity band engineering to produce flat bands and additional nodes in Dirac materials. We show that surface impurities give rise to nearly flat impurity bands close to the Dirac point. The hybridization of the Dirac
Externí odkaz:
http://arxiv.org/abs/2012.15323
Autor:
Krieger, Jonas A., Pertsova, Anna, Giblin, Sean R., Döbeli, Max, Prokscha, Thomas, Schneider, Christof W., Suter, Andreas, Hesjedal, Thorsten, Balatsky, Alexander V., Salman, Zaher
Publikováno v:
Phys. Rev. Lett. 125, 026802 (2020)
At an interface between a topological insulator (TI) and a conventional superconductor (SC), superconductivity has been predicted to change dramatically and exhibit novel correlations. In particular, the induced superconductivity by an $s$-wave SC in
Externí odkaz:
http://arxiv.org/abs/2003.12104
Publikováno v:
Phys. Rev. B 99, 205126 (2019)
We present the result of an \textit{ab initio} search for new Dirac materials among inverse perovskites. Our investigation is focused on the less studied class of lanthanide antiperovskites containing heavy $f$-electron elements in the cation positio
Externí odkaz:
http://arxiv.org/abs/1902.06337
The quantum anomalous Hall effect (QAHE), characterized by dissipationless quantized edge transport, relies crucially on a non-trivial topology of the electronic bulk bandstructure and a robust ferromagnetic order that breaks time-reversal symmetry.
Externí odkaz:
http://arxiv.org/abs/1901.06395
Publikováno v:
Phys. Status Solidi RRL. 2018 doi:10.1002/pssr.201800210
Using the non-equilibrium Green\noindent 's function method and the Keldysh formalism, we study the effects of spin-orbit interactions and time-reversal symmetry breaking exchange fields on non-equilibrium quantum transport in graphene armchair nanor
Externí odkaz:
http://arxiv.org/abs/1805.02418
Autor:
Pertsova, Anna, Balatsky, Alexander V.
Publikováno v:
Phys. Rev. B 97, 075109 (2018)
Recently it was suggested that transient excitonic instability can be realized in optically-pumped two-dimensional (2D) Dirac materials (DMs), such as graphene and topological insulator surface states. Here we discuss the possibility of achieving a t
Externí odkaz:
http://arxiv.org/abs/1710.09132
Publikováno v:
Phys. Rev. B 95, 205410 (2017)
Recent pump-probe experiments demonstrate the possibility that Dirac materials may be driven into transient excited states describable by two chemical potentials, one for the electrons and one for the holes. Given the Dirac nature of the spectrum, su
Externí odkaz:
http://arxiv.org/abs/1701.04206
Publikováno v:
Phys. Rev. B 92, 155420 (2015)
We study theoretically the effects of short-range electron-electron interactions on the electronic structure of graphene, in the presence of single substitutional impurities. Our computational approach is based on the $\pi$ orbital tight-binding appr
Externí odkaz:
http://arxiv.org/abs/1501.07526
Publikováno v:
Phys. Rev. B 84, 155436 (2011)
We investigate the possibility of the electrical control of spin transfer in monoatomic chains incorporating spin-impurities. Our theoretical framework is the mixed quantum-classical (Ehrenfest) description of the spin dynamics, in the spirit of the
Externí odkaz:
http://arxiv.org/abs/1106.3687