Impurity atoms on view in cuprates
Materials Today Elsevier 5:4 (2002) 24-33
Nanoscale One-Dimensional Scattering Resonances in the CuO Chains of YBa2Cu3O6+x
Physical Review Letters American Physical Society (APS) 88:9 (2002) 097002
Nanoscale one-dimensional scattering resonances in the CuO chains of YBa2 Cu3 O6+x
Physical Review Letters 88:9 (2002) 970021-970024
Abstract:
Scanning tunneling spectroscopy measurements of the CuO chain plane in YBa2Cu3O6+xshowing a ≅25 meV gap in the local density of states (LDOS) filled by numerous intragap resonances were presented. Intense peaks in LDOS spectra associated with one dimensional, Friedel-like oscillations were analyzed. The results from other probes as well as their implications for phenomena in the superconducting CuO2plane were also discussed.Ballistic effusion of normal liquid 3He through nanoscale apertures
Physical Review B - Condensed Matter and Materials Physics 65:7 (2002) 0754141-0754144
Abstract:
We have measured mass transport of normal liquid 3He through an array of submicron diameter apertures in a thin membrane. As the temperature is decreased we observe the crossover from viscous flow to ballistic effusion transport by quasiparticles. In this ballistic regime the quasiparticle mean free path is large compared to both the aperture diameter and the membrane thickness, and the flow conductance is temperature independent. At lowest temperatures, this experiment provides an analog of the electronic ballistic point contact for neutral Fermi liquids. The measured conductance is in quantitative agreement with theory.Ballistic effusion of normal liquid 3He through nanoscale apertures
Physical Review B American Physical Society (APS) 65:7 (2002) 075414