35 research outputs found
Charge Order Driven spin-Peierls Transition in NaV2O5
Full text linkWe conclude from 23Na and 51V NMR measurements in NaxV2O5(x=0.996) a charge
ordering transition starting at T=37 K and preceding the lattice distortion and
the formation of a spin gap Delta=106 K at Tc=34.7 K. Above Tc, only a single
Na site is observed in agreement with the Pmmn space group of this first
1/4-filled ladder system. Below Tc=34.7 K, this line evolves into eight
distinct 23Na quadrupolar split lines, which evidences a lattice distortion
with, at least, a doubling of the unit cell in the (a,b) plane. A model for
this unique transition implying both charge density wave and spin-Peierls order
is discussed.Comment: 4 pages, 3 figures, submitted to Phys. Rev. Let
Dynamic effective connectivity in cortically embedded systems of recurrently coupled synfire chains
Full text linkRovibrational motion of CO in solid C60
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The Correlation of Proton-NMR, Fluorine-MMR and ESR-Experiments on Some (Fluoranthenyl) 2
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Pulsed ESR on the organic ion radical salt: 3,3′-diethyl-4,4′-dimethyl-2,2′-thiazolocyanine-[TCNQ]2
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Proton Polarization with Naphthalene Crystals by Integrated Solid Effect on Photoexcited Triplet State
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