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  • 1
    Electronic Resource
    Electronic Resource
    Electric Field Driven Electron Self-Exchanges in Dry Nafion Containing Mixed-Valent Osmium Bipyridine (1994)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 98 (1994), S. 5127-5134 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100070a031
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  • 2
    Electronic Resource
    Electronic Resource
    Optics (communication arising) Mechanism for 'superluminal' tunnelling (2003)
    [s.l.] : Nature Publishing Group
    Nature 424 (2003), S. 638-638 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Büttiker and Washburn reply Winful objects to our appeal to pulse reshaping discussed in refs 2,3. It is these discussions, however, that show that causality is maintained in the tunnelling process and that no fundamental tenet of modern physics is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/424638b
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  • 3
    Electronic Resource
    Electronic Resource
    Optics Ado about nothing much? (2003)
    [s.l.] : Nature Publishing Group
    Nature 422 (2003), S. 271-272 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In Physical Review Letters, Herbert Winful presents a description of the “Nature of 'superluminal' barrier tunnelling”, in answer to the controversy that has arisen from experiments in which pulses of light and microwaves appear to tunnel through a barrier at speeds faster than a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/422271a
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  • 4
    Electronic Resource
    Electronic Resource
    A laser that sings a different tune (1997)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 387 (1997), S. 755-755 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The laser is perhaps the most important product of atomic physics. Traditionally, laser design has relied on careful choice of materials, each with fixed lasing properties, but on page 777 of this issue J. Faist et al. describe a much more versatile device, whose properties can be changed at ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/387755a0
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  • 5
    Electronic Resource
    Electronic Resource
    Effects of Dissipation and Temperature on Macroscopic Quantum Tunneling in Josephson Junctions (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 480 (1986), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1986.tb12410.x
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  • 6
    Electronic Resource
    Electronic Resource
    Feedback cooling of currents (1989)
    [s.l.] : Nature Publishing Group
    Nature 337 (1989), S. 597-598 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] JUST as feedback can be used to correct errors in the output voltages of amplifiers, it can also be used to remove noise from the current through a resistor á€" including the 'Johnson/Nyquist' noise that results from the thermal motion of electrons1. Such a fed-back amplifier ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/337597a0
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  • 7
    Electronic Resource
    Electronic Resource
    NMR studies of single crystals of H2. VII. Orientational ordering in the hcp phase (1984)
    Springer
    Journal of low temperature physics 57 (1984), S. 31-54 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report an analysis of NMR lineshape measurements in hcp single crystals of H2 at ortho concentrationsX between 0.15 and 0.55 over the temperature range where the orientational ordering becomes substantial. The normalized rms order parameter $$\bar \sigma $$ is obtained from the second momentM 2 and is plotted against the reduced orientational entropyS red derived from calorimetric measurements. For comparison, we present calculations for a single-particle model, for isolated pairs and triangles ofo-H2 molecules. They confirm that single-particle models as used by previous authors cannot satisfactorily account for the orientational ordering in the hcp phase. Rather, cluster configurations where the lowest excited states have a quite different ordering arrangement from that of the ground state, yet only a small energy change, need to be invoked. In a $$\bar \sigma $$ versus 1−S red plot, the hcp phase ordering is contrasted with that in the ordered cubic phase. In the Appendix, the experimental sample cell design at Duke University and the observed NMR line shapes are compared with those of the groups at Saclay and Harvard University under similar conditions ofT andX and the differences in results are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00681515
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  • 8
    Electronic Resource
    Electronic Resource
    Single atoms as transistors (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 199-200 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As the drive to gigabit computer memory chips accelerates, requiring smaller and smaller transistors, one might ask what the limits are to making transistors smaller. Recent experiments indicate that the limit might be reached only at the level of single atoms. Three independent groups of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/357199a0
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  • 9
    Electronic Resource
    Electronic Resource
    Current oscillations ring true (1993)
    [s.l.] : Nature Publishing Group
    Nature 361 (1993), S. 587-588 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE subtle quantum-mechanical inter-play between current and magnetic field gives rise to current oscillations in devices such as SQUIDs (superconducting quantum interference devices), which are small loops of superconducting material. On page 617 of this issue1, Moschalkov et al. describe a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/361587a0
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  • 10
    Electronic Resource
    Electronic Resource
    Trapped in mid-air (1992)
    [s.l.] : Nature Publishing Group
    Nature 358 (1992), S. 537-538 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IF one tosses a tennis ball into a silo (Fig. 1), the ball will remain confined there in the potential energy well. If one tosses the ball so that it passes over the top of the silo, nothing much happens - the well has no effect on the trajectory of the ball. If instead one plays at the microscopic ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/358537a0
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