Frustrated minority spins in GeNi2O4

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dc.creatorMatsuda, M.
dc.creatorChung, J. -H.
dc.creatorPark, S.
dc.creatorSato, T. J.
dc.creatorMatsuno, K.
dc.creatorAruga-Katori, H.
dc.creatorTakagi, H.
dc.creatorKakurai, K.
dc.creatorKamazawa, K.
dc.creatorTsunoda, Y.
dc.creatorKagomiya, I.
dc.creatorHenley, C. L.
dc.creatorLee, S. -H.
dc.date2007-08-23
dc.date.accessioned2026-07-07T08:25:13Z
dc.date.available2026-07-07T08:25:13Z
dc.descriptionRecently, two consecutive phase transitions were observed, upon cooling, in an antiferromagnetic spinel GeNi$_2$O$_4$ at $T_{N1}=12.1$ K and $T_{N2}=11.4$ K, respectively \cite{matsuno, crawford}. Using unpolarized and polarized elastic neutron scattering we show that the two transitions are due to the existence of frustrated minority spins in this compound. Upon cooling, at $T_{N1}$ the spins on the $<111>$ \kagome planes order ferromagnetically in the plane and antiferromagnetically between the planes (phase I), leaving the spins on the $<111>$ triangular planes that separate the \kagome planes frustrated and disordered. At the lower $T_{N2}$, the triangular spins also order in the $<111>$ plane (phase II). We also present a scenario involving exchange interactions that qualitatively explains the origin of the two purely magnetic phase transitions.
dc.identifierhttps://arxiv.org/abs/0708.3162
dc.identifierhttp://arxiv.org/abs/0708.3162
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/136587
dc.subjectStrongly Correlated Electrons
dc.titleFrustrated minority spins in GeNi2O4
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