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  • 1
    Electronic Resource
    Electronic Resource
    Vapor-Liquid Equilibrium. IV. Carbon Tetrachloride-Cyclohexane Mixtures1 (1939)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 61 (1939), S. 3206-3210 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01266a066
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  • 2
    Electronic Resource
    Electronic Resource
    Vapor-Liquid Equilibrium. V. Carbon Tetrachloride-Benzene Mixtures1 (1940)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 62 (1940), S. 712-716 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01861a006
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  • 3
    Electronic Resource
    Electronic Resource
    Vapor–Liquid Equilibrium. III. Benzene–Cyclohexane Mixtures. (1939)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 43 (1939), S. 119-130 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150388a009
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  • 4
    Electronic Resource
    Electronic Resource
    Plastic third sound resonator and low-temperature pressure gauge (1985)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 56 (1985), S. 444-448 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A robust plastic third sound resonator has been developed which permits a wide range of experiments to be carried out on superfluid helium films. At room temperature the cell can be filled by diffusion with a wide range of gases including He, Ne, Ar, N2, and CO2 to form both substrate and experiment. The highly flexible walls allow in situ pressure measurements with a resolution of 10−6 Torr. Third sound can also be detected with capacitor plates within this cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1138320
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  • 5
    Electronic Resource
    Electronic Resource
    Sign reversal of the Hall effect in YBa2(Cu1−x )3O7−δ single crystals (1995)
    Springer
    Journal of superconductivity 8 (1995), S. 383-389 
    Details
    ISSN: 1572-9605
    Keywords: Superconductivity ; YBa2(Cu1−x Co x )3O7−δ ; Hall effect ; Single crystals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract We have measured the in-plane Hall effect and in-plane resistivity of cobalt-doped YBa2Cu3O7−δ (YBCO) single-crystal samples. The concentration of cobalt ranged from 1 to 3%. As the applied field was varied, a sign reversal of the Hall resistivity was seen for 1 and 2% Co-doped samples, but not for the 3% sample. Our results are expressed in terms of conductivities, as recently recommended by the work of Dorseyet al. and Kopninet al. In the mixed state just below the superconducting transition temperatureT c, the Hall conductivityσ xy is the sum of two terms,C 1/H andC 2H, whereC 1 andC 2 are field-independent but temperature-dependent. As previously observed by Ginsberg and Manson for undoped YBCO, the coefficientC 1 is approximately proportional toτ 2 andC 2 is approximately linear inτ, whereτ = 1−(T/T c ). The values ofC 1 andC 2 are presented for each cobalt concentration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00728176
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  • 6
    Electronic Resource
    Electronic Resource
    Superfluid flow dissipation in two dimensions (1985)
    Springer
    Journal of low temperature physics 61 (1985), S. 173-183 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A model is presented describing the onset of nonlinear dissipation in two-dimensional helium films for allT〈T KT, whereT KT is the Kosterlitz-Thouless transition temperature. The superfluid velocity is included in the renormalization equations of Kosterlitz and Thousless, and it is shown that the model predicts a characteristic velocity for a given temperature, film thickness, and frequency where onset occurs. No “critical velocity” is predicted except atT=0. The model neglects the effects of prinning, and preliminary measurements seem to substantiate this assumption.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00681629
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  • 7
    Electronic Resource
    Electronic Resource
    Self-consistent measurement of the adsorption of He on Cu, CO2, Ar, and Ne (1989)
    Springer
    Journal of low temperature physics 75 (1989), S. 349-359 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The chemical potentials as a function of He coverage have been determined from He adsorption isotherms measured at 1.72 K for the following thick substrates: Ne, Ar, and CO2-plated Cu, and bare Cu. The adsorption isotherm data were analyzed self-consistently using the modified Brunauer-Emmett-Teller method for low coverages and the Frenkel-Halsey-Hill vapor pressure relation at high coverages. The analysis establishes the surface area, chemical potential constant, Γ=−μd 3, and capacity increases and heats of adsorption of the first and second monolayers of He for each adsorbent. The measured chemical potentials follow the expected inverse-cube law for coverages greater than 2.5 layers, but differ substantially for smaller coverages. We use results of the isotherm analysis to interpret measurements of third sound velocities, and to make precision measurements of the He inert (nonsuperfluid) layer coverages on these substrates
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00683712
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  • 8
    Electronic Resource
    Electronic Resource
    Extraordinary behavior of4He on hydrogen and deuterium surfaces (1992)
    Springer
    Journal of low temperature physics 89 (1992), S. 125-134 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using third sound resonance below 1 K, for4He on solid H2 and D2 surfaces, we have found new phenomena. On H2 we find surface superfluidity for4He coverages less than one layer, with the zero temperature Kosterlitz-Thouless (KT) transition extrapolated to a coverage of 0.35±0.05 layers. On both H2 and D2 we find a new line of transitions below the KT transitions. On H2, at zero temperature, the new line of transitions starts at zero temperature at a coverage of 0.6±0.1 layers of4He and has a slope of 0.58 (K/layer) of the universal KT slope. We also find, on H2, two modes of surface wave propagation between the new transition and the KT transition. Below the new transition we also find anomalous third sound absorption which increases exponentially with temperature by five orders of magnitude.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692584
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  • 9
    Electronic Resource
    Electronic Resource
    Measurement of vortex diffusivity and lifetime below the Kosterlitz-Thouless transition in helium films (1990)
    Springer
    Journal of low temperature physics 78 (1990), S. 325-334 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using vortex pair motion, we have measured the vortex diffusivity below the Kosterlitz-Thouless transition temperature (T KT) in atomically thin superfluid helium films on both argon and neon substrates. The diffusivities are on the order ofħ/m nearT KT and then fall rapidly to10 −3 ħ/m near0.1 K for argon and to0.03 ħ/m for neon. However, for the thinnest helium film on neon, the diffusivity is large and independent of temperature. At small flow velocities, dissipation due to unpaired vortices indicates a vortex lifetime on the order of seconds for a neon substrate near0.1 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00683314
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  • 10
    Electronic Resource
    Electronic Resource
    Structure in thin superfluid helium films (1990)
    Springer
    Journal of low temperature physics 78 (1990), S. 157-163 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Precision measurements of third sound in atomically thin4He films on Ne, Ar, and CO2 substrates reveal a periodic structure not corresponding to whole layers. Treating the He film as an incompressible, continuous fluid, the data indicate that the chemical potential has a contribution proportional to l−6, where l is the He coverage in layers, which is modulated at intervals of 0.62±0.04 layers and which weakens the van der Waals potential. Alternatively the data indicates the existence in the film of a damped smectic density wave with a 0.54±0.40 layer periodicity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00686097
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