Journal ArticleDOI
Hall effect in thin films of gold-silver alloys
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TLDR
In this article, an effective relaxation time is deduced from the variation of the Hall coefficient with the concentration which is found to be proportional to the mean free path of the electrons.Abstract:
Measurements on Hall constant and magnetoresistance of thin films (350 A-800 A) of Ag-Au alloys with concentrations up to 20% gold have been made. An effective relaxation time is deduced from the variation of the Hall coefficient with the concentration which is found to be proportional to the mean free path of the electrons. The mean free path of the film decreases by about a factor of 3 from the bulk value for silver on the addition of gold to silver. The results are consistent with those of other workers who have used different methods and also indicate that the relaxation time is anisotropic in thin films of alloy. Size effects have also been discussed.read more
Citations
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Unusually small electrical resistance of three-dimensional nanoporous gold in external magnetic fields.
Takeshi Fujita,H. Okada,H. Okada,Keiichi Koyama,Kenji Watanabe,Sadamichi Maekawa,Mingwei Chen +6 more
TL;DR: It was found that topologically disordered 3D nanoporosity leads to extremely low magnetoresistance and anomalous temperature dependence as the characteristic length of nanoporous gold is tuned to be approximately 14 nm.
Journal ArticleDOI
Hall coefficient of thin films in a mean free path model
C R Tellier,M Rabel,A J Tosser +2 more
TL;DR: In this paper, the Boltzmann transport equation was used to define an effective relaxation time for thin metallic films subjected to a transverse magnetic field, and analytical expressions were derived for the Hall coefficient and conductivity in the case of nearly specular scattering on external surfaces.
Journal ArticleDOI
Hall coefficient of thin polycrystalline metallic films in a three-dimensional scattering model
TL;DR: In this article, a three-dimensional grain boundary model is used to calculate the transport properties of fine-grained films where background and grain boundaries scattering processes occur simultaneously, and analytical expressions are easily derived for the Hall coefficient and conductivity in polycrystalline films subjected to a transverse magnetic field.
Journal ArticleDOI
Dependence of the resistivity and hall coefficient in thin metallic films on the thickness and the transverse magnetic field
TL;DR: In this paper, the authors derived analytical equations for the conductivity and the Hall coefficient of thin metallic films subjected to a longitudinal electric field and a transverse magnetic field from previously proposed general expressions.
Journal ArticleDOI
Theoretical analysis of the transverse Hall effect in thin monocrystalline films
TL;DR: The transverse Hall coefficient of thin monocrystalline films was derived from the recently presented bidimensional conduction model by introducing a term in the Boltzmann equation representing the effective mean free path as discussed by the authors.
References
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Journal ArticleDOI
Optical Constants of the Noble Metals
P. B. Johnson,R. W. Christy +1 more
TL;DR: In this paper, the optical constants for the noble metals (copper, silver, and gold) from reflection and transmission measurements on vacuum-evaporated thin films at room temperature, in the spectral range 0.5-6.5 eV.
Journal ArticleDOI
Optical Properties of Ag and Cu
H. Ehrenreich,H. R. Philipp +1 more
TL;DR: In this paper, experimental data for the optical constants of Ag and Cu extending to 25 eV are discussed in terms of three fundamental physical processes: (1) free-electron effects, (2) interband transitions, and (3) collective oscillations.
Journal ArticleDOI
The ordinary transport properties of the noble metals
TL;DR: In this article, the shape of the Fermi surface is made to depend on a single parameter which can be interpreted as the pseudo-potential of the {111} atomic planes acting on an orthogonalized plane wave, giving rise to an energy gap of 5-10 ev at the zone boundaries.
Journal ArticleDOI
Investigation of the optical properties of Ag by means of thin semi-transparent films
TL;DR: In this paper, the optical constants of thin Ag films are determined from measurements of both their transmittance and reflectance, in terms of intra and interband transitions, in relation with the film crystallographic structure.
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