Výsledky vyhledávání - "Iwasaki, Yoshiki"

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Quantum spin state stabilized by coupling with classical spins

Autor: Yamaguchi, Hironori, Okubo, Tsuyoshi, Matsuo, Akira, Kawakami, Takashi, Iwasaki, Yoshiki, Takahashi, Taiki, Hosokoshi, Yuko, Kindo, Koichi

Publikováno v: Phys. Rev. B 109, L100404 (2024)

We introduce a model compound featuring a spin-1/2 frustrated square lattice partially coupled by spin-5/2. A significant magnetization plateau exceeding 60 T could be observed, indicating a quantum state formed by $S$ = 1/2 spins in the square latti

Externí odkaz: http://arxiv.org/abs/2404.06767

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Magnetic properties of a spin-1/2 octagonal lattice

Autor: Morota, Satoshi, Kida, Takanori, Hagiwara, Masayuki, Shimura, Yasuyuki, Iwasaki, Yoshiki, Yamaguchi, Hironori

Publikováno v: Phys. Rev. B 109, 054401 (2024)

We successfully synthesized a verdazyl-based complex, ($p$-Py-V-$p$-CN)$_2$[Cu(hfac)$_2$]. Molecular orbital calculations reveal that three types of antiferromagnetic (AF) interactions are involved in the formation of a spin-1/2 distorted octagonal l

Externí odkaz: http://arxiv.org/abs/2402.01200

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Quantum gapped state in a spin-1/2 distorted honeycomb-based lattice with frustration

Autor: Yamaguchi, Hironori, Morota, Satoshi, Kida, Takanori, Shimono, Seiya, Araki, Koji, Iwasaki, Yoshiki, Hosokoshi, Yuko, Hagiwara, Masayuki

Publikováno v: Phys. Rev. Mater. 7, 104403 (2023)

We successfully synthesized ($p$-Py-V)[Cu(hfac)$_2$], a verdazyl-based complex. Molecular orbital calculations revealed five types of intermolecular interactions between the radical spins and two types of intramolecular interactions between the radic

Externí odkaz: http://arxiv.org/abs/2310.14569

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Field-induced quantum phase in a frustrated zigzag-square lattice

Autor: Yamaguchi, Hironori, Shimamura, Kazutoshi, Yoshida, Yasuo, Matsuo, Akira, Kindo, Koichi, Nakano, Kiichi, Morota, Satoshi, Hosokoshi, Yuko, Kida, Takanori, Iwasaki, Yoshiki, Shimono, Seiya, Araki, Koji, Hagiwara, Masayuki

Publikováno v: Phys. Rev. Mater. 7, L091401 (2023)

This study presents the experimental realization of a spin-1/2 zigzag-square lattice in a verdazyl-based complex, namely ($m$-Py-V-2,6-F$_2$)$[$Cu(hfac)$_2]$. Molecular orbital calculations suggest the presence of five types of frustrated exchange co

Externí odkaz: http://arxiv.org/abs/2309.14619

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Spin-Peierls transition to a Haldane phase

Autor: Yamaguchi, Hironori, Takahashi, Hiroki, Kawakami, Takashi, Okamoto, Kiyomi, Sakai, Toru, Yajima, Takeshi, Iwasaki, Yoshiki

Publikováno v: Phys. Rev. B 107, L161111 (2023)

We present an organic compound exhibiting a spin-Peierls (SP) transition to an effective spin-1 antiferromagnetic uniform chain, that is, the Haldane chain. The clear disappearance of magnetization, accompanied by a structural phase transition, is we

Externí odkaz: http://arxiv.org/abs/2304.13970

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Magnetotransport in Layered Dirac Fermion System Coupled with Magnetic Moments

Autor: Iwasaki, Yoshiki, Morinari, Takao

Publikováno v: J. Phys. Soc. Jpn. 87, 033706 (2018)

We theoretically investigate the magnetotransport of Dirac fermions coupled with localized moments to understand the physical properties of the Dirac material EuMnBi$_2$. Using an interlayer hopping form, which simplifies the complicated interaction

Externí odkaz: http://arxiv.org/abs/1802.01060

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Magnetic properties of quasi-two-dimensional $S$ = 1/2 Heisenberg antiferromagnet with distorted square lattice

Autor: Yamaguchi, Hironori, Tamekuni, Yusuke, Iwasaki, Yoshiki, Otsuka, Rei, Hosokoshi, Yuko, Kida, Takanori, Hagiwara, Masayuki

Publikováno v: Phys. Rev. B 95, 235135 (2017)

We successfully synthesize single crystals of the verdazyl radical $\alpha$-2,3,5-Cl$_3$-V. $Ab$ $initio$ molecular orbital calculations indicate that the two dominant antiferromagnetic interactions, $J_{\rm{1}}$ and $J_{\rm{2}}$ ($\alpha =J_{\rm{2}}

Externí odkaz: http://arxiv.org/abs/1706.07546

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