Measurement of the shear strength of a charge-density wave

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dc.creatorO'Neill, K.
dc.creatorCicak, K.
dc.creatorThorne, R. E.
dc.date2003-12-10
dc.date2004-06-03
dc.date.accessioned2026-07-07T06:27:04Z
dc.date.available2026-07-07T06:27:04Z
dc.descriptionWe have explored the shear plasticity of charge density waves (CDWs) in niobium triselenide samples with cross-sections having a single micro-fabricated thickness step. Shear stresses along the step result from thickness-dependent CDW pinning. For small thickness differences the CDW depins elastically at the volume average depinning field. For large thickness differences the thicker, more weakly pinned side depins first via plastic shear. A simple model describes the qualitative features of our data, and yields a value for the CDW's shear strength of approximately 9.5*10^3 N/m^2 and a lower bound for the elastic shear modulus of 2.1*10^4 N/m^2. These values are orders of magnitude smaller than the CDW's longitudinal modulus but are much larger than corresponding values for flux-line lattices, and may explain the relative coherence of the CDW response.
dc.description10 pages, 4 figures, submitted to Physical Review Letters
dc.identifierhttps://arxiv.org/abs/cond-mat/0312265
dc.identifierhttp://arxiv.org/abs/cond-mat/0312265
dc.identifierPhysical Review Letters 93, 066601 (2004)
dc.identifierdoi:10.1103/PhysRevLett.93.066601
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/97308
dc.subjectStrongly Correlated Electrons
dc.titleMeasurement of the shear strength of a charge-density wave
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