Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Tomáš Bzdušek"'
Autor:
Anffany Chen, Hauke Brand, Tobias Helbig, Tobias Hofmann, Stefan Imhof, Alexander Fritzsche, Tobias Kießling, Alexander Stegmaier, Lavi K. Upreti, Titus Neupert, Tomáš Bzdušek, Martin Greiter, Ronny Thomale, Igor Boettcher
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Hyperbolic lattices emulate particle dynamics equivalent to those in negatively curved space, with connections to general relativity. Here, the authors use electric circuits with a novel complex-phase circuit element to simulate hyperbolic graphene w
Externí odkaz:
https://doaj.org/article/5e4a5bdb3f6a41a582ba369fe7e6e93f
Autor:
Patrick M. Lenggenhager, Alexander Stegmaier, Lavi K. Upreti, Tobias Hofmann, Tobias Helbig, Achim Vollhardt, Martin Greiter, Ching Hua Lee, Stefan Imhof, Hauke Brand, Tobias Kießling, Igor Boettcher, Titus Neupert, Ronny Thomale, Tomáš Bzdušek
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
Spaces with negative curvature are difficult to realise and investigate experimentally, but they can be emulated with synthetic matter. Here, the authors show how to do this using an electric circuit network, and present a method to characterize and
Externí odkaz:
https://doaj.org/article/f3e742da54644207a0c96ca9b44595a5
Autor:
M. Michael Denner, Anastasiia Skurativska, Frank Schindler, Mark H. Fischer, Ronny Thomale, Tomáš Bzdušek, Titus Neupert
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Three-dimensional topological insulators have become a research focal point on topological quantum matter. Here, the authors propose the non-Hermitian analogue, the exceptional topological insulator, with anomalous surface states only existing within
Externí odkaz:
https://doaj.org/article/30626e05ec364b8ca77ed3bf0a41cee8
Publikováno v:
Physical Review Research, Vol 2, Iss 2, p 023226 (2020)
An Alice string is a topological defect with a very peculiar feature. When a defect with a monopole charge encircles an Alice string, the monopole charge changes sign. In this paper, we generalize this notion to the momentum space of periodic media w
Externí odkaz:
https://doaj.org/article/ae1a528f36b74519ad1ca8a09b6de0ad
Autor:
Anastasiia Skurativska, Tomáš Bzdušek, Titus Neupert, Frank Schindler, Ronny Thomale, M. Michael Denner, Mark H. Fischer
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Nature Communications
Nature Communications
We introduce the exceptional topological insulator (ETI), a non-Hermitian topological state of matter that features exotic non-Hermitian surface states which can only exist within the three-dimensional topological bulk embedding. We show how this pha
Publikováno v:
Physical Review B. 106
Autor:
David M. Urwyler, Patrick M. Lenggenhager, Igor Boettcher, Ronny Thomale, Titus Neupert, Tomáš Bzdušek
Recently, hyperbolic lattices that tile the negatively curved hyperbolic plane emerged as a new paradigm of synthetic matter, and their energy levels were characterized by a band structure in a four- (or higher-)dimensional momentum space. To explore
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43edb975ace674a6158ba9d90c660e43
http://arxiv.org/abs/2203.07292
http://arxiv.org/abs/2203.07292
Publikováno v:
Physical Review Letters. 126
Being Wannierizable is not the end of the story for topological insulators. We introduce a family of topological insulators that would be considered trivial in the paradigm set by the tenfold way, topological quantum chemistry, and the method of symm
Publikováno v:
Physical Review B, 103 (12)
We study a class of topological materials which in their momentum-space band structure exhibit threefold degeneracies known as triple points. Focusing specifically on PT-symmetric crystalline solids with negligible spin-orbit coupling, we find that s
Publikováno v:
Physical Review B. 102
We present a framework to systematically address topological phases when finer partitionings of bands are taken into account, rather than only considering the two subspaces spanned by valence and conduction bands. Focusing on $C_2\mathcal{T}$-symmetr