Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Hermanns, Maria"'
Publikováno v:
Phys. Rev. B 110, 165402 - Published 1 October 2024
Recent quantum Hall experiments have observed `daughter states' next to several plateaus at half-integer filling factors in various platforms. These states were first proposed based on model wavefunctions for the Moore-Read state by Levin and Halperi
Externí odkaz:
http://arxiv.org/abs/2405.03753
We study the effect of disorder on Z$_2$ quantum spin liquids with a Majorana Fermi line (respectively surface in three dimensions) and show that depending on the symmetries that are preserved \emph{on average} qualitatively different scenarios will
Externí odkaz:
http://arxiv.org/abs/2402.01448
Recent years have seen a growing interest in topological phases beyond the standard paradigm of gapped, isolated systems. One recent direction is to explore topological features in non-hermitian systems that are commonly used as effective description
Externí odkaz:
http://arxiv.org/abs/2211.13721
Various types of topological phenomena at criticality are currently under active research. In this paper we suggest to generalize the known topological quantities to finite temperatures, allowing us to consider gapped and critical (gapless) systems o
Externí odkaz:
http://arxiv.org/abs/2202.11380
The entanglement spectrum is a useful tool to study topological phases of matter, and contains valuable information about the ground state of the system. Here, we study its properties for free non-Hermitian systems for both point-gapped and line-gapp
Externí odkaz:
http://arxiv.org/abs/2111.07788
Publikováno v:
Phys. Rev. B 103, 195132 (2021)
The bulk polarization is a $\mathbb{Z}_2$ topological invariant characterizing non-interacting systems in one dimension with chiral or particle-hole symmetries. We show that the bulk polarization can always be determined from the single-particle enta
Externí odkaz:
http://arxiv.org/abs/2102.02840
Autor:
Eschmann, Tim, Mishchenko, Petr A., O'Brien, Kevin, Bojesen, Troels A., Kato, Yasuyuki, Hermanns, Maria, Motome, Yukitoshi, Trebst, Simon
Publikováno v:
Phys. Rev. B 102, 075125 (2020)
In the field of frustrated magnetism, Kitaev models provide a unique framework to study the phenomena of spin fractionalization and emergent lattice gauge theories in two and three spatial dimensions. Their ground states are quantum spin liquids, whi
Externí odkaz:
http://arxiv.org/abs/2006.07386
Autor:
Mishchenko, Petr A., Kato, Yasuyuki, O'Brien, Kevin, Bojesen, Troels A., Eschmann, Tim, Hermanns, Maria, Trebst, Simon, Motome, Yukitoshi
Publikováno v:
Phys. Rev. B 101, 045118 (2020)
Chiral spin liquids (CSLs) are time-reversal symmetry breaking ground states of frustrated quantum magnets that show no long-range magnetic ordering, but instead exhibit topological order and fractional excitations. Their realization in simple and tr
Externí odkaz:
http://arxiv.org/abs/1907.10241
Publikováno v:
Phys. Rev. B 98, 115114 (2018)
Semimetals, in which conduction and valence bands touch but do not form Fermi surfaces, have attracted considerable interest for their anomalous properties starting with the discovery of Dirac matter in graphene and other two-dimensional honeycomb ma
Externí odkaz:
http://arxiv.org/abs/1803.04976
Autor:
Matern, Stephanie, Hermanns, Maria
Publikováno v:
J. Stat. Mech. (2018) 063101
Quantum spin liquids are highly fascinating quantum liquids in which the spin degrees of freedom fractionalize. An interesting class of spin liquids are the exactly solvable, three-dimensional Kitaev spin liquids. Their fractionalized excitations are
Externí odkaz:
http://arxiv.org/abs/1712.07715