Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Yoshihiko Nonomura"'
Publikováno v:
Physical Review B. 103
We study phase transitions in the two-dimensional Heisenberg model with the Dzyaloshinskii-Moriya interaction, the Ising anisotropy ($\eta$), and the dipolar interaction under zero and finite magnetic fields ($H$). For three typical strengths (zero,
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f059cc5a524e973cdb8fdc803d2ccbbf
https://doi.org/10.1103/physrevb.103.214404
https://doi.org/10.1103/physrevb.103.214404
Autor:
Yoshihiko Nonomura, Yusuke Tomita
Recently, the present authors proposed the nonequilibrium-to-equilibrium scaling (NE-ES) scheme for critical Monte Carlo relaxation process, which scales relaxation data in the whole simulation-time regions regardless of functional forms, namely both
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ed431abc7a1ac56f906041cd7581480
http://arxiv.org/abs/2007.14356
http://arxiv.org/abs/2007.14356
Autor:
Yoshihiko Nonomura, Yusuke Tomita
Publikováno v:
Physical Review E. 101
Although the nonequilibrium relaxation (NER) method has been widely used in Monte Carlo studies on phase transitions in classical spin systems, such studies have been quite limited in quantum phase transitions. The reason is that relaxation process b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d21f685e956f272de75aba0ae561e5a
https://doi.org/10.1103/physreve.101.032105
https://doi.org/10.1103/physreve.101.032105
Publikováno v:
Physical Review B. 100
We investigate phase transitions in the two-dimensional dipolar Heisenberg model with uniaxial anisotropy with a specific ratio between the exchange and dipolar constants, $\delta=1$. We obtain the $\eta$--$T$ (anisotropy vs. temperature) phase diagr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9ff87ad70ba05718390e2b51de3a2f3
https://doi.org/10.1103/physrevb.100.094407
https://doi.org/10.1103/physrevb.100.094407
Publikováno v:
Physical Review E. 98
We study field-induced phase transitions in the two-dimensional dipolar Ising ferromagnet with a specific ratio between the exchange and dipolar constants, $\delta=1$, which exhibits a stripe-ordered phase with the width of one lattice unit at low te
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4c77b17e4cd298f33e856b46aa542bd
https://doi.org/10.1103/physreve.98.062126
https://doi.org/10.1103/physreve.98.062126
Publikováno v:
Physical Review B. 97
We explore the possibility of a Berezinskii-Kosterlitz-Thouless-like critical phase for the charge degrees of freedom in the intermediate-temperature regime between the charge-ordered and disordered phases in two-dimensional systems with competing sh
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https://doi.org/10.1103/physrevb.97.205125
https://doi.org/10.1103/physrevb.97.205125
Autor:
Yoshihiko Nonomura, Yusuke Tomita
We investigate nonequilibrium relaxations of Ising models at the critical point by using a cluster update. While preceding studies imply that nonequilibrium cluster-flip dynamics at the critical point are universally described by the stretched-expone
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d99aab7b36973bdce1b2ea5325a10927
Autor:
Yusuke Tomita, Yoshihiko Nonomura
Publikováno v:
Physical Review E. 93
Recently, it was shown [Y. Nonomura, J. Phys. Soc. Jpn. 83, 113001 (2014)JUPSAU0031-901510.7566/JPSJ.83.113001] that the nonequilibrium critical relaxation of the two-dimensional (2D) Ising model from a perfectly ordered state in the Wolff algorithm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c44a49d52d509bcc94501d81929fb2ed
https://doi.org/10.1103/physreve.93.012101
https://doi.org/10.1103/physreve.93.012101
Autor:
Yoshihiko Nonomura
Publikováno v:
Journal of Superconductivity and Novel Magnetism. 23:601-604
Recently terahertz wave emission from intrinsic Josephson junctions without external magnetic fields has been intensively studied, and some emission states have been proposed numerically or theoretically. For the surface impedance Z=1, the McCumber-l
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https://explore.openaire.eu/search/publication?articleId=doi_________::0ac28b148c58de061e5a4660ce1e7ee3
https://doi.org/10.1007/s10948-010-0690-3
https://doi.org/10.1007/s10948-010-0690-3
Autor:
Yoshihiko Nonomura
Publikováno v:
Physica C: Superconductivity and its Applications. 468:644-648
Effect of sample sizes in electromagnetic wave emission from intrinsic Josephson junctions is investigated numerically. By using material parameters of Bi 2 Sr 2 CaCu 2 O 8 , emission frequency becomes as large as 1 THz for a few dozens of layers. Fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23c5c043f672a584142dd70160199c81
https://doi.org/10.1016/j.physc.2007.11.096
https://doi.org/10.1016/j.physc.2007.11.096