Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Götz S. Uhrig"'
Autor:
Mohsen Hafez-Torbati, Götz S. Uhrig
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-12 (2024)
Abstract Despite the discovery of multiple intrinsic magnetic topological insulators in recent years the observation of Chern insulators is still restricted to very low temperatures due to the negligible charge gaps. Here, we uncover the potential of
Externí odkaz:
https://doaj.org/article/b8dc140339d54f5cbf38891c5f4be72d
Publikováno v:
Communications Physics, Vol 5, Iss 1, Pp 1-8 (2022)
Most bound quantum states in condensed matter systems emerge due to two-body interactions. Here, the formation of a stable three-particle bound state, induced by irreducible three-particle interactions in an antiferromagnetic spin ladder, is evidence
Externí odkaz:
https://doaj.org/article/564cfb1347ce413f8c21c6188bc6ea7e
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043191 (2023)
Dipolar spin ensembles with random spin positions are attracting much attention because they help us to understand decoherence as it occurs in solid-state quantum bits in contact with spin baths. Also, these ensembles are systems which may show many-
Externí odkaz:
https://doaj.org/article/2e9142fcc63e42ac9d5c5eed18a324c3
Publikováno v:
PRX Quantum, Vol 4, Iss 3, p 030332 (2023)
The orientation of the order parameter of quantum magnets can be used to store information in a dense and efficient way. Switching this order parameter corresponds to writing data. To understand how this can be done, we study a precessional reorienta
Externí odkaz:
https://doaj.org/article/4b722e41d9e84b158e09e0ac011c7919
Publikováno v:
Physical Review Research, Vol 5, Iss 1, p 013132 (2023)
We apply continuous similarity transformations (CSTs) to the easy-axis antiferromagnetic XXZ model on the square lattice. The CST flow equations are truncated in momentum space by the scaling dimension d so that all contributions with d≤2 are taken
Externí odkaz:
https://doaj.org/article/39cf0e7cd08e4903bb4c93486ec2de6a
Publikováno v:
Physical Review Research, Vol 3, Iss 4, p 043168 (2021)
A dynamic mean-field theory for spin ensembles (spinDMFT) at infinite temperatures on arbitrary lattices is established. The approach is introduced for an isotropic Heisenberg model with S=1/2 and external field. For large coordination numbers, it is
Externí odkaz:
https://doaj.org/article/2ca2b977267e47b591f1d6a17935bbf9
Publikováno v:
Physical Review Research, Vol 3, Iss 4, p 043232 (2021)
A substantial energy gap of charge excitations induced by strong correlations is the characteristic feature of Mott insulators. We study how the Mott gap is affected by long-range antiferromagnetic order. Our key finding is that the Mott gap is incre
Externí odkaz:
https://doaj.org/article/8811869adac34fb3960a2f65aac75d8a
Publikováno v:
Physical Review Research, Vol 1, Iss 3, p 033189 (2019)
Spin inertia measurements are a novel experimental tool to study long-time spin relaxation processes in semiconductor nanostructures. We develop a theory of the spin inertia effect for resident electrons and holes localized in quantum dots. We consid
Externí odkaz:
https://doaj.org/article/1e032b28d6cf47df9fe199bd1db95347
Autor:
Leanna B. Müller, Götz S. Uhrig
Publikováno v:
Physical Review B. 107
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0af111a4ddba86cd3e545395b76bf09f
https://doi.org/10.1103/physrevb.107.l081102
https://doi.org/10.1103/physrevb.107.l081102
We apply continuous similarity transformations (CSTs) to the easy-axis antiferromagnetic XXZ-model on the square lattice. The CST flow equations are truncated in momentum space by the scaling dimension $d$ so that all contributions with $d\le 2$ are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff1ca9d0622e43f96ad09bed882be923
http://arxiv.org/abs/2211.05689
http://arxiv.org/abs/2211.05689
