Magnetic Field versus Temperature Phase Diagram of the Spin-1/2 Alternating Chain Compound F5PNN

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dc.creatorYoshida, Yasuo
dc.creatorKawae, Tatsuya
dc.creatorHosokoshi, Yuko
dc.creatorInoue, Katsuya
dc.creatorMaeshima, Nobuya
dc.creatorOkunishi, Koichi
dc.creatorOkamoto, Kiyomi
dc.creatorSakai, Toru
dc.date2007-11-15
dc.date.accessioned2026-07-07T08:43:03Z
dc.date.available2026-07-07T08:43:03Z
dc.descriptionWe have measured the specific heat of the S = 1/2 alternating Heisenberg antiferromagnetic chain compound pentafluorophenyl nitronyl nitroxide in magnetic fields using a single crystal and powder. A sharp peak due to field-induced magnetic ordering (FIMO) is observed in both samples. The H-T phase boundary of the FIMO of the single crystal is symmetric with respect to the central field of the gapless field region HC1 < H < HC2, whereas it is distorted for the powder whose ordering temperatures are lower. An analysis employing calculations based on the finite temperature density matrix renormalization group indicates the possibility of novel incommensurate ordering due to frustration in the powder around the central field.
dc.description5 pages, 5 figures (Submitted to Physical Review B)
dc.identifierhttps://arxiv.org/abs/0711.2336
dc.identifierhttp://arxiv.org/abs/0711.2336
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/142181
dc.subjectStrongly Correlated Electrons
dc.titleMagnetic Field versus Temperature Phase Diagram of the Spin-1/2 Alternating Chain Compound F5PNN
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