On the Fermi Surface Shapes of the Noble Metals by Ultrasonic

1961 ◽  
Vol 33 (5) ◽  
pp. 699-700 ◽  
Author(s):  
R. W. Morse ◽  
A. Myers ◽  
C. T. Walker
Keyword(s):  
Fermi Surface ◽  
Noble Metals

Positron Annihilation with Core Electrons in the Noble Metals

1974 ◽  
Vol 52 (4) ◽  
pp. 336-339 ◽  
Author(s):  
E. H. Becker ◽  
A. G. Gould ◽  
E. M. D. Senicki ◽  
B. G. Hogg
Keyword(s):  
Simple Model ◽  
Fermi Surface ◽  
Single Crystals ◽  
Positron Annihilation ◽  
Angular Correlation ◽  
Noble Metals ◽  
Correlation Data ◽  
Core Electrons

Experimental angular correlation curves for identically oriented single crystals of copper, silver, and gold have been obtained using "a point geometry" apparatus. The differences between these angular correlation data are compared to the differences predicted using a simple model of the Fermi surface combined with calculations of the theoretical core distributions.

Effect of pressure on the Fermi surface of noble metals

1989 ◽  
Vol 39 (14) ◽  
pp. 9806-9808 ◽  
Author(s):  
Rajeev Ahuja ◽  
A. K. Solanki ◽  
S. Auluck
Keyword(s):  
Fermi Surface ◽  
Noble Metals ◽  
Effect Of Pressure

Calculated Fermi Surface Characteristics of the Noble Metals

1988 ◽  
Vol 147 (2) ◽  
pp. 575-582 ◽  
Author(s):  
J. Graefenstein ◽  
I. Mertig ◽  
E. Mrosan ◽  
V. N. Antonov ◽  
Vl. N. Antonov
Keyword(s):  
Fermi Surface ◽  
Noble Metals ◽  
Surface Characteristics

Fermi surface of the noble metals

Pramana ◽  
1989 ◽  
Vol 32 (6) ◽  
pp. 831-840 ◽  
Author(s):  
Rajeev Ahuja ◽  
A K Solanki ◽  
T Nautiyal ◽  
S Auluck
Keyword(s):  
Fermi Surface ◽  
Noble Metals

THEORY OF THE SEEBECK COEFFICIENT IN ALKALI AND NOBLE METALS

1999 ◽  
Vol 13 (20) ◽  
pp. 689-694 ◽  
Author(s):  
SHIGEJI FUJITA ◽  
HUNG-CHEUK HO ◽  
SALVADOR GODOY
Keyword(s):  
Energy Density ◽  
Charge Carrier ◽  
Fermi Surface ◽  
Seebeck Coefficient ◽  
Carrier Density ◽  
Noble Metals ◽  
Alkali Metals ◽  
Charge Carrier Density ◽  
Different Shapes ◽  
New Formula

A new formula for the Seebeck coefficient S is obtained: [Formula: see text], where q, n, ε F , [Formula: see text] and [Formula: see text] are, respectively, charge, carrier density, Fermi energy, density of states at ε F and volume. Seebeck (S) and Hall (R H ) coefficients in alkali metals are both negative while these coefficients in noble metals have opposite signs. This difference is shown to arise from the different shapes of the Fermi surface.

scholarly journals Plasmon Modulation Spectroscopy of Noble Metals to Reveal the Distribution of the Fermi Surface Electrons in the Conduction Band

2017 ◽  
Vol 7 (12) ◽  
pp. 1315 ◽  
Author(s):  
Kentaro Takagi ◽  
Selvakumar Nair ◽  
Jumpei Saito ◽  
Keisuke Seto ◽  
Ryosuke Watanabe ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Conduction Band ◽  
Noble Metals ◽  
Modulation Spectroscopy ◽  
Surface Electrons

Effect of strain on the Fermi surface of the noble metals

1993 ◽  
Vol 48 (3) ◽  
pp. 1373-1377
Author(s):  
R. Ahuja ◽  
A. K. Solanki ◽  
S. Auluck
Keyword(s):  
Fermi Surface ◽  
Noble Metals

The Fermi surfaces of the noble metals

1969 ◽  
Vol 265 (1167) ◽  
pp. 507-532 ◽  
Keyword(s):  
Fermi Surface ◽  
Angular Dependence ◽  
Noble Metals ◽  
Orientation Dependence ◽  
Radius Vector ◽  
Precision Measurements ◽  
Minimum Area ◽  
Fermi Surfaces ◽  
Analytical Formulae ◽  
Fitting In

Precision measurements of the angular dependence of the de Haas-van Alphen frequencies F (proportional to extremal areas of the Fermi surface) of the noble metals have been made, using the technique of following the oscillations in magnetic properties as the crystal is slowly rotated in a fixed magnetic field.The most thorough measurements were on copper and these and a few measurements on silver agree very well with the results of Joseph, Thorsen, Gertner & Valby (1966) and Joseph & Thorsen (1965); a few measurements were also made on gold to clear up some slight discrepancies between the data of Joseph, Thorsen & Blum (1965) and of Shoenberg (1962). The major part of the paper is concerned with the use of the most reliable data from all available sources to compute analytical representations of the Fermi surfaces in the form of Fourier expansions. The method of analysis is essentially the same as that used by Roaf (1962) to fit the data of Shoenberg (1962), but because of the greater accuracy and comprehensiveness of the data now available, an appreciably greater accuracy could be achieved in the formulae for the Fermi surfaces. Following Roaf, the volumes of the computed Fermi surfaces were chosen to be exactly those of the free-electron sphere and the excellent agreement between the computed and observed absolute values of F , demonstrates the validity of this assumption. The computed orientation dependence of F agreed with experiment not only in regions between fitting points but also as regards features not used in the fitting. In particular, the analytical formulae predicted non-central minima of area whose angular dependence agreed almost exactly with the behaviour of the subsidiary belly oscillations observed by Joseph & Thorsen. Moreover, the existence of a new non-central minimum area (the ' lemon ’) predicted by the formulae for copper and gold was confirmed experimentally in copper with F in close agreement with the computed prediction. The computed radius vectors of 5 and 7 coefficient formulae for the same metal (with unrelated coefficients) agree to within about 0.2% and this suggests that the formulae are reliable to this sort of accuracy in the radius vector; this compares with the accuracy of order 1% achieved by Roaf. Once the extremal areas of cross-section of the Fermi surface are known, those of a surface of constant energy slightly differing from the Fermi energy Ev can be immediately deduced if the cyclotron masses are known.

Fermi surface of noble metals: Full-potential generalized-gradient-approximation calculations

1994 ◽  
Vol 50 (15) ◽  
pp. 11183-11186 ◽  
Author(s):  
R. Ahuja ◽  
S. Auluck ◽  
P. Söderlind ◽  
O. Eriksson ◽  
J. M. Wills ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Noble Metals ◽  
Full Potential ◽  
Generalized Gradient ◽  
Generalized Gradient Approximation
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