Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Matthias Gohlke"'
Publikováno v:
SciPost Physics, Vol 15, Iss 5, p 206 (2023)
We present the first successful application of the matrix product state (MPS) representing a thermal quantum pure state (TPQ) in equilibrium in two spatial dimensions over almost the entire temperature range. We use the Kitaev honeycomb model as a pr
Externí odkaz:
https://doaj.org/article/1dd084e88e064e3c961b418988c24202
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043023 (2020)
The appearance of nontrivial phases in Kitaev materials exposed to an external magnetic field has recently been a subject of intensive studies. Here, we elucidate the relation between the field-induced ground states of the classical and quantum spin
Externí odkaz:
https://doaj.org/article/4ad3a5e549ce440aa4426cf0452deda7
Publikováno v:
Physical Review Research. 2
The appearance of nontrivial phases in Kitaev materials exposed to an external magnetic field has recently been a subject of intensive studies. Here, we elucidate the relation between the field-induced ground states of the classical and quantum spin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90f1eee77cdd37980bf785d3b5a295e3
https://doi.org/10.1103/physrevresearch.2.043023
https://doi.org/10.1103/physrevresearch.2.043023
Topological spin liquids in two spatial dimensions are stable phases in the presence of a small magnetic field, but may give way to field-induced phenomena at intermediate field strengths. Sandwiched between the low-field spin liquid physics and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ac51420ebb936b8bb11bad2e26b57c9
Publikováno v:
Physical Review B
The protons in water ice are subject to so called \emph{ice rules} resulting in an extensive ground state degeneracy. We study how an external electric field reduces this ground state degeneracy in hexagonal water ice I$_h$ within a minimal model. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07f107a73274e0e178194be3918e0744
Autor:
Karlo Penc, Jeffrey G. Rau, Frank Pollmann, Paul A. McClarty, Matthias Gohlke, Roderich Moessner, Xiao-Yu Dong
Publikováno v:
Physical Review B
We study the Kitaev-Heisenberg-$\Gamma$-$\Gamma'$ model that describes the magnetism in strong spin-orbit coupled honeycomb lattice Mott insulators. In strong $[111]$ magnetic fields that bring the system into the fully polarized paramagnetic phase,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6874c80cc555b815d61d528c00ab222c
https://hdl.handle.net/21.11116/0000-0002-091D-521.11116/0000-0002-090D-7
https://hdl.handle.net/21.11116/0000-0002-091D-521.11116/0000-0002-090D-7
Publikováno v:
Physical Review B
The Kitaev model exhibits a Quantum Spin Liquid hosting emergent fractionalized excitations. We study the Kitaev model on the honeycomb lattice coupled to a magnetic field along the [111] axis. Utilizing large scale matrix product based numerical mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d52b815fba3b3fbd021cc7a93bc43c1
https://doi.org/10.1103/physrevb.98.014418
https://doi.org/10.1103/physrevb.98.014418
Publikováno v:
Physical Review B
Motivated by recent experiments on $\alpha$-RuCl$_3$, we investigate a possible quantum spin liquid ground state of the honeycomb-lattice spin model with bond-dependent interactions. We consider the $K-\Gamma$ model, where $K$ and $\Gamma$ represent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f80a04bb6718cdc215c284c272805887
https://doi.org/10.1103/physrevb.97.075126
https://doi.org/10.1103/physrevb.97.075126
Publikováno v:
Physical Review Letters
We introduce a matrix-product state based method to efficiently obtain dynamical response functions for two-dimensional microscopic Hamiltonians, which we apply to different phases of the Kitaev-Heisenberg model. We find significant broad high energy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::737a8078121a69fae495c6794a8ce184
https://pubmed.ncbi.nlm.nih.gov/29077461
https://pubmed.ncbi.nlm.nih.gov/29077461
Publikováno v:
Physical Review Letters. 114
We study the linear and nonlinear acoustic response of ${\mathrm{SrTiO}}_{3}$ across its ferroelastic transition at ${T}_{a}=105\text{ }\text{ }\mathrm{K}$ by time domain Brillouin scattering. Above ${T}_{a}$ we observe that for a strain amplitude of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbfff0efe71f99bae677802692870904
https://doi.org/10.1103/physrevlett.114.047401
https://doi.org/10.1103/physrevlett.114.047401