Zobrazeno 1 - 10
of 272
pro vyhledávání: '"Fulga I"'
Most superconductors are thermal insulators. A disordered chiral \textit{p}-wave superconductor, however, can make a transition to a thermal metal phase. Because heat is then transported by Majorana fermions, this phase is referred to as a Majorana m
Externí odkaz:
http://arxiv.org/abs/2410.17076
Publikováno v:
Phys. Rev. Lett. 129, 086601 (2022)
Physically, one tends to think of non-Hermitian systems in terms of gain and loss: the decay or amplification of a mode is given by the imaginary part of its energy. Here, we introduce an alternative avenue to the realm of non-Hermitian physics, whic
Externí odkaz:
http://arxiv.org/abs/2111.02263
Publikováno v:
Phys. Rev. Lett. 125, 236802 (2020)
The quest for non-Abelian quasiparticles has inspired decades of experimental and theoretical efforts, where the scarcity of direct probes poses a key challenge. Among their clearest signatures is a thermal Hall conductance with quantized half-intege
Externí odkaz:
http://arxiv.org/abs/2006.09392
Autor:
Thirupathaiah, S., Kushnirenk, Y. S., Koepernik, K., Piening, B. R., Buechner, B., Aswartham, S., Brink, J. van den, Borisenko, S. V., Fulga, I. C.
Publikováno v:
SciPost Phys. 10, 004 (2021)
We show that the cubic compound PtBi2, is a topological semimetal hosting a sixfold band touching point in close proximity to the Fermi level. Using angle-resolved photoemission spectroscopy, we map the bandstructure of the system, which is in good a
Externí odkaz:
http://arxiv.org/abs/2006.08642
Publikováno v:
Phys. Rev. B 100, 075415 (2019)
Two-dimensional second-order topological superconductors (SOTSCs) have gapped bulk and edge states, with zero-energy Majorana bound states localized at corners. Motivated by recent advances in Majorana nanowire experiments, we propose to realize a tu
Externí odkaz:
http://arxiv.org/abs/1904.02437
Publikováno v:
Phys. Rev. B 99, 235408 (2019)
Periodically driven quantum many-body systems support anomalous topological phases of matter, which cannot be realized by static systems. In many cases, these anomalous phases can be many-body localized, which implies that they are stable and do not
Externí odkaz:
http://arxiv.org/abs/1902.06995
Publikováno v:
Phys. Rev. B 98, 201114 (2018)
Topological multipole insulators are a class of higher order topological insulators (HOTI) in which robust fractional corner charges appear due to a quantized electric multipole moment of the bulk. This bulk-corner correspondence has been expressed i
Externí odkaz:
http://arxiv.org/abs/1807.09050
Publikováno v:
Phys. Rev. B 97, 121402 (2018)
We show how to realize topologically protected crossings of three energy bands, integer-spin analogs of Weyl fermions, in three-dimensional optical lattices. Our proposal only involves ultracold atom techniques that have already been experimentally d
Externí odkaz:
http://arxiv.org/abs/1711.10935
Publikováno v:
Phys. Rev. Lett. 120, 216801 (2018)
The topological phases of periodically-driven, or Floquet systems, rely on a perfectly periodic modulation of system parameters in time. Even the smallest deviation from periodicity leads to decoherence, causing the boundary (end) states to leak into
Externí odkaz:
http://arxiv.org/abs/1711.06188
Publikováno v:
J. Phys. A: Math. Theor. 50, 455301 (2017)
We present a general analytical formalism to determine the energy spectrum of a quantum particle in a cubic lattice subject to translationally invariant commensurate magnetic fluxes and in the presence of a general space-independent non-Abelian gauge
Externí odkaz:
http://arxiv.org/abs/1706.09745