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of 12
pro vyhledávání: '"Suzuki, Takafumi"'
The characterization of quantum spin liquid phases in Kitaev materials has been a subject of intensive studies over the recent years, both theoretically and experimentally. Most theoretical studies have focused on an isotropically interacting model w
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c22e2decf1eb154d0756816f586fec7d
http://arxiv.org/abs/2212.11000
http://arxiv.org/abs/2212.11000
We investigate the ground-state properies of the $K-��$ model on a honeycomb lattice using series expansions and numerical exact diagonalizations, where the model includes Kitaev ($K$) and symmetric off-diagonal ($��$) interactions. Starting
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https://explore.openaire.eu/search/publication?articleId=doi_________::4a5042fc378870f13cbd132d2a622643
In this paper, we investigate the ground-state phase diagram of the $S=1/2$ Heisenberg-$��$ model on a honeycomb lattice by dimer series expansion and exact diagonalization. We focus on the effects of the anisotropy of the interactions; by tuning
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https://explore.openaire.eu/search/publication?articleId=doi_________::d93e469f0a06dcb100bc79a8b432f3cb
Autor:
Suzuki, Takafumi, Suga, Sei-ichiro
We calculate the dynamical spin-structure factor of the $S=1$ Ising spin chain with negative single-ion anisotropy in magnetic fields using the infinite time-evolving-block-decimation algorithm. We show that when a transverse magnetic field is applie
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https://explore.openaire.eu/search/publication?articleId=doi_________::c6dd4d9b317095033c9aaf18205c195d
A numerical algorithm to calculate exact finite-temperature spectra of many-body lattice Hamiltonians is formulated by combining the typicality approach and the shifted Krylov subspace method. The combined algorithm, which we name finite-temperature
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea4be199d59c8aed0c41e69b72b2fa50
Autor:
Suzuki, Takafumi, Suga, Sei-ichiro
We use an exact numerical diagonalization method to calculate the dynamical spin structure factors (DSFs) of three ab-initio models and one ab-initio-guided model for a honeycomb-lattice magnet $��$-RuCl$_3$. We also use thermal pure quantum stat
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https://explore.openaire.eu/search/publication?articleId=doi_________::d8c5a0ebeb91af27d51b8a33b1e5cbce
Autor:
Yamaji, Youhei, Suzuki, Takafumi, Yamada, Takuto, Suga, Sei-ichiro, Kawashima, Naoki, Imada, Masatoshi
Contrary to the original expectation, Na$_2$IrO$_3$ is not a Kitaev's quantum spin liquid (QSL) but shows a zig-zag-type antiferromagnetic order in experiments. Here we propose experimental clues and criteria to measure how a material in hand is clos
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e39f2c7da457a801a35d41acf67bf428
We present two types of relativistic Lagrangians for the Lorentz-Dirac equation written in terms of an arbitrary world-line parameter. One of the Lagrangians contains an exponential damping function of the proper time and explicitly depends on the wo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b7da3796b3a8aed3e0022c0fe3ce573
We investigate thermal phase transitions to a valence-bond solid phase in SU(N) Heisenberg models with four- or six-body interactions on a square or honeycomb lattice, respectively. In both cases, a thermal phase transition occurs that is accompanied
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca855fce690411f1018846238fd9fc9d
We performed variational calculation based on the multi-scale entanglemnt renormalization ansatz, for the antiferromagnetic Heisenberg model on a Shastry Sutherland lattice (SSL). Our results show that at coupling ratio J'/J= 0.687(3), the system und
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::830755d6581ad912e584ecb0a6eb9602
http://arxiv.org/abs/1212.1999
http://arxiv.org/abs/1212.1999