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The Isotope Effect in Superconductivity
Physical Review, 1954The isotope effect in superconductors is usually summarized by giving the observed values of $p$ in the equation ${M}^{p}{T}_{c}=\mathrm{constant}$, where $M$ is the isotopic mass and ${T}_{c}$ the superconducting transition temperature. Fr\"ohlich predicted the value $p=\frac{1}{2}$, but the measurements in some instances show deviations from this ...
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Isotope Effects in the Cuprates
Journal of the Physical Society of Japan, 1995It is shown that isotope effects observed in the high- T c cuprates are compatible with unconventional d -wave superconductivity due to a nonphonon mechanism. Because of the high- T c , a considerable amount of quasi-particle damping exists at T c , thereby giving rise to pair-breaking effect.
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The isotope effect in superconductivity
Physics Today, 1952Ever since Kamerlingh-Onnes discovered in 1911 that the electrical resistance of mercury abruptly vanished at a temperature just a few degrees above the absolute zero, the phenomenon of superconductivity has presented an intriguing challenge to physicists.
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Isotope effect in ferromagnets
Journal of Experimental and Theoretical Physics, 1997A phenomenological approach to the theory of the isotope effect in ferromagnets is developed on the basis of the phenomenon of magnetoelasticity. Parameters whose experimental measurement permits a quantitative calculation of the contribution of acoustic phonons to the isotope shift of the Curie temperature are identified.
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Physical Review, 1969
A derivation of the classical jump rate $\ensuremath{\Gamma}$ for tracer diffusion aimed at a clear expression for the mass dependence of the frequency factor $\overline{\ensuremath{\nu}}$ is presented. The derivation is effected without using the usual collective normal coordinates which usually combine the masses in a complicated way.
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A derivation of the classical jump rate $\ensuremath{\Gamma}$ for tracer diffusion aimed at a clear expression for the mass dependence of the frequency factor $\overline{\ensuremath{\nu}}$ is presented. The derivation is effected without using the usual collective normal coordinates which usually combine the masses in a complicated way.
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Physical Review, 1935
The normal frequencies of the linear acetylene molecule have been computed for infinitesimal vibrations with the generalization that the masses of the two hydrogen atoms are different. Constants of the potential energy have been determined by using the well-known frequencies of normal acetylene. Numerical calculations have then been carried through for
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The normal frequencies of the linear acetylene molecule have been computed for infinitesimal vibrations with the generalization that the masses of the two hydrogen atoms are different. Constants of the potential energy have been determined by using the well-known frequencies of normal acetylene. Numerical calculations have then been carried through for
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Equilibrium and nonequilibrium oxygen isotope effects in synthetic carbonates
, 1997Sang-Tae Kim, J. R. O'neil
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Introduction to Isotope Effect
2012An atom consists of an extremely small, positively charged nucleus surrounded by a cloud of negatively charged electrons. Although typically the nucleus is less than one ten-thounsandth the size of the atom, the nucleus contains more than 99.9% of the mass of the atom.
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