Quantum magnetism and quantum phase transitions

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Phase diagram of multiferroic KCu3As2O7(OD)3

Physical Review B American Physical Society (APS) 95:21 (2017) 214415

Authors:

Gøran J Nilsen, Virginie Simonet, Claire V Colin, Ryutaro Okuma, Yoshihiko Okamoto, Masashi Tokunaga, Thomas C Hansen, Dmitry D Khalyavin, Zenji Hiroi
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Iyoite, MnCuCl(OH)3 and misakiite, Cu3Mn(OH)6Cl2: new members of the atacamite family from Sadamisaki Peninsula, Ehime Prefecture, Japan

Mineralogical Magazine Mineralogical Society 81:3 (2017) 485-498

Authors:

D Nishio-Hamane, K Momma, M Ohnishi, N Shimobayashi, R Miyawaki, N Tomita, R Okuma, AR Kampf, T Minakawa
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Weak ferromagnetic order breaking the threefold rotational symmetry of the underlying kagomé lattice in CdCu$_3$(OH)$_6$(NO$_3$)$_2\cdot$H$_2$O

ArXiv 1703.09357 (2017)

Authors:

Ryutaro Okuma, Takeshi Yajima, Daisuke Nishio-Hamane, Tsuyoshi Okubo, Zenji Hiroi
Details from ArXiV

Quasiparticle Breakdown and Spin Hamiltonian of the Frustrated Quantum Pyrochlore Yb$_2$Ti$_2$O$_7$ in Magnetic Field

(2017)

Authors:

JD Thompson, PA McClarty, D Prabhakaran, I Cabrera, T Guidi, R Coldea
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Weak ferromagnetic order breaking the threefold rotational symmetry of the underlying kagome lattice in CdCu3(OH)6(NO3)2·H2O

Physical Review B American Physical Society (APS) 95:9 (2017) 094427

Authors:

Ryutaro Okuma, Takeshi Yajima, Daisuke Nishio-Hamane, Tsuyoshi Okubo, Zenji Hiroi
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