T
Takashi Tonegawa
Researcher at Kobe University
Publications - 110
Citations - 1295
Takashi Tonegawa is an academic researcher from Kobe University. The author has contributed to research in topics: Magnetization & Ground state. The author has an hindex of 19, co-authored 103 publications receiving 1189 citations. Previous affiliations of Takashi Tonegawa include Fukui University of Technology & Osaka Prefecture University.
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Experimental observation of the 1/3 magnetization plateau in the diamond-chain compound Cu3(CO3)2(OH)2.
Hikomitsu Kikuchi,Yutaka Fujii,Meiro Chiba,Seitaro Mitsudo,Toshitaka Idehara,Takashi Tonegawa,Kiyomi Okamoto,Tôru Sakai,Tomohiko Kuwai,Hitoshi Ohta +9 more
TL;DR: The magnetic susceptibility, high field magnetization, and specific heat measurements of Cu3(CO3)2(OH)2, which is a model substance for the frustrating diamond spin chain model, have been performed using single crystals.
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Ground-State Phase Diagram and Magnetization Curves of the Spin-1 Antiferromagnetic Heisenberg Chain with Bond Alternation and Uniaxial Single-Ion-Type Anisotropy
TL;DR: In this article, the ground-state properties of the spin-1 antiferromagnetic Heisenberg chain with bond alternation and uniaxial single-ion-type anisotropy, described by the Hamiltonian, H 0 plus the Zeeman term, are studied.
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Ground state of an $S=1/2$ distorted diamond chain - model of $\rm Cu_3 Cl_6 (H_2 O)_2 \cdot 2H_8 C_4 SO_2$
TL;DR: In this paper, the ground state of the model Hamiltonian of the trimerized $S=1/2$ quantum Heisenberg chain was studied and three kinds of coupling constants between spins were assumed to be antiferromagnetic.
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Magnetic Properties of the Diamond Chain Compound Cu3(CO3)2(OH)2
Hikomitsu Kikuchi,Yutaka Fujii,Meiro Chiba,Seitaro Mitsudo,Toshitaka Idehara,Takashi Tonegawa,Kiyomi Okamoto,Tôru Sakai,Tomohiko Kuwai,Koichi Kindo,Akira Matsuo,Wataru Higemoto,Kusuo Nishiyama,Mladen Horvatić,Claude Bertheir +14 more
TL;DR: In this paper, a 1/3 magnetization plateau is confirmed to be present in the magnetization curve of azurite and two resonance peaks of 1 H-NMR were observed.