Journal ArticleDOI
fcc Metallic superconducting phase observed in vapor-quenched Se and Te films
TLDR
In this paper, microcrystalline Se and Te overgrowths having an abnormal A-1-type structure were quench-condensed at 4.2 K on fine-grained base films of the space group oxides vapor-quenched at the same temperature on suitable glass substrates.Abstract:
Microcrystalline Se and Te overgrowths having an abnormal A-1-type structure were quench-condensed at 4.2 K on fine-grained base films ofO
space group oxides vapor-quenched at the same temperature on suitable glass substrates. From measurements of the electrical resistance we found that in this metastable fcc phase Se and Te behave as metals and may become superconductors. On heating, one reaches a critical temperature at which the overgrowth breaks because of the increase in volume occurring when the metallic phase transforms to the less dense, ordinary A-8-type semiconducting structure. An analysis of the data shows that the smaller is the lattice constant of the base film oxide, the higher are the density, the bulk superconducting transition temperature, and the bulk conductivity of the metallic Se and Te and the lower is the breaking temperature of the overgrowth.read more
Citations
More filters
Journal ArticleDOI
The Se-Te (Selenium-Tellurium) system
Journal ArticleDOI
Properties of vapour-quenched superconducting A1-type As, Sb and Bi films
TL;DR: In this article, the superconducting critical temperature T c is lowered irreversibly, until an annealing temperature T t is reached at which the overlay film fractures because of the occurrence of the abnormal-to-ordinary structure transformation.
Journal ArticleDOI
Superconducting properties of quench-deposited A1-type phosphorous and sulfur films
TL;DR: A1-type P and S films quench-condensed on LiF and LiF or MgO are soft superconductors whose transition temperature and critical magnetic field fall, with increasing thickness, to size-independent values and decrease, on annealing, with rising heating temperature.
References
More filters
Journal ArticleDOI
The mean free path of electrons in metals
TL;DR: The mean free path of electrons in metals has been studied in this paper, where the authors show that electrons follow a straight line along the path of the electron in the metal atom.
Journal ArticleDOI
The conductivity of thin metallic films according to the electron theory of metals
TL;DR: In this paper, the conductivity of thin films of the alkali metals has been measured in the H. W. Wills Physical Laboratory, Bristol and the experimental results were compared with a formula derived on the basis of this hypothesis.
Journal ArticleDOI
Metallic superconducting Si and Ge produced by vapor quenching on Cu
TL;DR: In this article, fine-grained Si and Ge overlays were obtained by vapor quenching at 42 K onto microcrystalline Cu films quench-condensed at the same temperature on glass substrates.
Related Papers (5)
Pressure Dependence of the Superconducting Transition Temperature of dhcp and fcc Lanthanum
T. F. Smith,W. E. Gardner +1 more