2,200 research outputs found
Optical non-reciprocity in magnetic structures related to high-Tc superconductors
Recent neutron scattering [1,2], and optical measurements [3,4] have detected
evidence in underdoped cuprate superconductors for a phase transition near the
pseudogap onset temperature T* to a time reversal-breaking state. The neutron
scattering indicates antiferromagnetic ordering, while it is often assumed that
optical polarization rotation requires at least a weak ferromagnetic component.
In this note we identify several antiferromagnetic structures, compatible with
neutron scattering data, that allow intrinsic polarization rotation through the
magnetoelectic effect
Alkaline battery separator characterization studies Quarterly report, 28 Apr. - 28 Jul. 1969
Absorber evaluation of alkaline battery separator systems with electrolyte wetting and wicking measuremen
Alkaline battery separator characterization studies Quarterly report, 28 Jun. - 28 Sep. 1969
Membrane and absorber screening tests for alkaline battery separator
A non-linear transport method for detecting superconducting stripes
We theoretically study the effect of stripe-like superconducting inclusions
on the non-linear resistivity in single crystals. Even when the stripe
orientation varies throughout the sample between two orthogonal directions due
to twinning, we predict that there should be a universal scaling relationship
between the nonlinear resistivity curves measured at different angles relative
to the crystal axes. This prediction can be used to verify or rule out the
existence of superconducting stripes at and above the superconducting
transition temperature in cuprate superconductors.Comment: 4 pages, 4 figure
Low Temperature AC Conductivity in BSCCO (2212)
We report measurements of anamolously large dissipative conductivities in
BiSrCaCuO(2212) at low temperatures. We have measured the complex conductivity
of BSCCO thin films at 100-600 GHz as a function of doping from the underdoped
to the overdoped state. At low temperatures there exists a residual dissipative
conductivity which scales with the T=0 superfluid density as the doping is
varied. This residual dissipative conductivity is larger than the possible
contribution from a thermal population of quasiparticles at the d-wave gap
nodes.Comment: Submitted to the Proceedings of the 22nd International Low
Temperature Physics Conference. To be published in Physica B
(http://www.elsevier.nl/locate/physb); 2 Pages with 2 Figure
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