Real space visualization of thermal fluctuations in a triangular flux-line lattice
نویسندگان
چکیده
منابع مشابه
Spin Fluctuations from Hertz to Terahertz on a Triangular Lattice.
The temporal magnetic correlations of the triangular-lattice antiferromagnet NiGa_{2}S_{4} are examined through 13 decades (10^{-13}-1 sec) using ultrahigh-resolution inelastic neutron scattering, muon spin relaxation, and ac and nonlinear susceptibility measurements. Unlike the short-ranged spatial correlations, the temperature dependence of the temporal correlations show distinct anomalies. T...
متن کاملFlux-line lattice distortion in PrOs4Sb12.
We report that the flux-line lattice in the cubic superconductor Pr(Os4Sb12 is strongly distorted from an ideal hexagonal lattice at very low temperatures in a small applied field. We attribute this to the presence of gap nodes in the superconducting state on at least some Fermi-surface sheets.
متن کاملFlux-line-lattice stability and dynamics.
The mechanical stability of a Aux-line lattice (FLL) having parameters appropriate for the high-T, superconductors is determined using the self-consistent phonon theory of lattice dynamics. Nearly parallel Aux lines (FL's) are assumed and FL pinning is neglected. The FLL becomes unstable when a phonon frequency goes to zero. At instability the rms vibrational amplitude diverges and the FL's can...
متن کاملMetastability and Glassy Behavior of a Driven Flux-Line Lattice.
Strong metastability and history dependence are observed in dc and pulsed transport studies of fluxline lattices in 2H-NbSe2, leading to the identification of two distinct states of the lattice with different spatial ordering. The metastability is most pronounced upon crossing a transition line marked by a large jump in the critical current (the peak effect). Current-induced annealing of the me...
متن کاملac Dynamics of a Pinned Flux-Line Lattice
The surface impedance of 2H-NbSe2 in the mixed state was measured over the frequency range 10–3000 MHz in fields up to 2 T. A crossover between pinned and viscous flux-line dynamics is observed at a pinning frequency, vp . The measured vp is compared to that predicted by a singleparticle “washboard potential” model of pinning. When the flux lattice is in an ordered state, vp is in good agreemen...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2010
ISSN: 1367-2630
DOI: 10.1088/1367-2630/12/3/033022