Novel Spin-Gap Behavior in Layered S=1/2 Quantum Spin System TiOCl

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dc.creatorImai, T.
dc.creatorChou, F. C.
dc.date2003-01-22
dc.date.accessioned2026-07-07T02:49:18Z
dc.date.available2026-07-07T02:49:18Z
dc.descriptionWe have investigated the spin fluctuations and their interplay with lattice instabilities in a layered S=1/2 quantum spin system TiOCl. Our Ti and Cl NMR data demonstrate a pseudo spin-gap behavior below T*=135 K, followed by successive phase transitions at T_c1=94K and T_c2=66K into the singlet ground state with an unusually large energy gap E_g=430K. The broad distribution of the local electric field gradient in the intermediate phase between T_c1 and T_c2 suggests unconventional spin and lattice (probably orbital) states with an emerging spin-gap.
dc.description4 pages and 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0301425
dc.identifierhttp://arxiv.org/abs/cond-mat/0301425
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/20742
dc.subjectStrongly Correlated Electrons
dc.titleNovel Spin-Gap Behavior in Layered S=1/2 Quantum Spin System TiOCl
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