Fermi surface and many-body enhancement in Pd

Dye, David H.; Campbell, S. A.; Crabtree, G. W.; Ketterson, J. B.; Sandesara, N. B.; Vuillemin, J. J.

doi:10.1103/physrevb.23.462

Cited by 70 publications

(27 citation statements)

References 47 publications

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“…Our calculations are compared with Dye et al [6]. We have also calculated Fermi velocities of some orbits which are comrired with the results of Dye et al [6]. The Fermi velocities are calculated for four Fermi sheets.…”

Section: Methods Of Calculationmentioning

confidence: 91%

“…They did calculate some extremal orbits on the Pd Fermi surface and obtained good agreement with experimental data. Dye et al [6] have recently completed a detailed study of the Pd Fermi surface using the dHvA effect. They have reported accurate extremal areas on all the four sheets of the Fermi surface of Pd and data for the L-centered holes.…”

Section: Introductionmentioning

confidence: 99%

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Fermi Surface Charactertics of Palladium

Ahuja

Solanki

Auluck

1990

Physica Status Solidi (b)

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The Fermi surface of palladium is calculated using the linear mufin tin orbital method in the atomic sphere approximation. The calculations demonstrate the need to include relativistic corrections for a good representation of the Fermi surface. Calculations are performed including the f-band potential parameters and by increasing the number of k points in the Brillouin zone summation. With the view to ascertain which exchange-correlation potential is appropriate for Fermi surface work calculations are made using a number of exchange-correlation potentials. The calculations indicate that the Slater Xa exchange with a = 0.75 provides the best agreement with the experimental Fermi surface data. Using this exchange the electron velocities and mass enhancement factor are calculated for the various sheets of the Fermi surface. The results are compared with the experimental data and with available theoretical calculations.Die Fermiflache von Palladium wird rnit der linearen "mufin-tin"-Orbitalmethode in der Atomkugelnaherung berechnet. Die Berechnungen zeigen die Notwendigkeit, relativistische Korrekturen fur eine gute Darstellung der Fermiflache einzuschlieBen. Die Berechnungen werden durchgefiihrt unter EinschluB der f-Band-Potentialparameter und mit steigender Zahl von k-Punkten bei der Brillouinzonensummation. Mit der Absicht, zu entscheiden, welches Austausch-Korrelationspotential fur die Fermioberflache geeignet ist, werden Berechnungen rnit einer Anzahl von Austausch-Korrelationspotentialen durchgefiihrt. Die Rechnungen zeigen, da13 der Slater-Xa-Austausch rnit a = 0,75 die beste obereinstimmung mit den experimentellen Fermiflachenwerten liefert. Mit diesem Austausch werden die Elektronengeschwindigkeit und der MassenvergroBerungsfaktor fur verschiedene Schichten der Fermiflache berechnet. Die Ergebnisse werden rnit experimentellen Werten und rnit vorhandenen theoretischen Berechnungen verglichen.

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Section: Methods Of Calculationmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Fermi Surface Charactertics of Palladium

Ahuja

Solanki

Auluck

1990

Physica Status Solidi (b)

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“…The number of conduction electrons ͑⌫-centered electron sheet͒ per Pd atom was found to be 0.37. 14 This results in the carrier density N =2ϫ 10 15 cm −3 . The effective mass of the conduction electrons is m * ϳ 2m, where m is the freeelectron mass and the Fermi velocity is v F = 5.6ϫ 10 7 cm/ s. 14 This results in m Ӎ 9 nm.…”

Section: Resultsmentioning

confidence: 99%

“…14 This results in the carrier density N =2ϫ 10 15 cm −3 . The effective mass of the conduction electrons is m * ϳ 2m, where m is the freeelectron mass and the Fermi velocity is v F = 5.6ϫ 10 7 cm/ s. 14 This results in m Ӎ 9 nm. One should realize that the sheet resistance in the Pd thin film is mostly determined by diffuse scattering at the interfaces.…”

Section: Resultsmentioning

confidence: 99%

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Scattering of spin current injected in Pd(001)

Foros

Woltersdorf

Heinrich

et al. 2005

Journal of Applied Physics

108

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We have studied spin pumping in Pd/ Fe͑001͒ ultrathin crystalline films prepared on GaAs͑001͒ by ferromagnetic resonance ͑FMR͒. FMR measurements show that the Pd͑001͒ overlayers lead to an appreciable attenuation of the spin current, which was generated by the precessing magnetization of Fe. Pd overlayers thicker than about 10 nm act as perfect spin sinks. It is argued that the loss of spin coherence in Pd is caused by scattering with spin fluctuations.

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De Haas‐Van Alphen Effect in Nearly Magnetic Transition Metals

Riseborough

1984

Physica Status Solidi (b)

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The oscillatory part of the thermodynamic potential and magnetization are calculated for a paramagnetic system that is near to a magnetic instability. The dominant excitations of such an exchange enhanced Fermi liquid are persistent spin fluctuations. The electrons are scattered by processes in which the spin fluctuations are emitted and absorbed. The electron spin fluctuation interaction results in a many-body resonance of the electronic density of states at the Fermi level. It is shown that the spin fluctuations manifest themselves in the de Haas-van Alphen oscillations. The amplitude of the oscillations is reduced, the reduction is dependent on the enhancement of the linear T term in the electronic specific heat. The results are applied to the experiments on CeSn, and on Pd.Fur ein paramagnetisches System in der Niihe einer magnetischen Instabilitat wird der oszillierende Anteil des thermodynamischen Potentials und der Magnetisierung berechnet. Die relevanten Anregungen sind durch Spinfluktuationen gegeben. Die Streuprozesse der Elektronen sind die Emission und die Absorption von Spinfluktuationen. Diese Spinfluktuationen resultieren in einer Amplitudenreduktion der de Haas-van Alphen-Oseillationen. Diese Amplitudenreduktion ist eine Funktion der Verstarkung des beziiglich der Temperatur linearen Teils der elektronischen spezifischen Wlrme. Die Resultate werden mit Experimenten an CeSn, und Pd verglichen.

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Fermi surface and many-body enhancement in Pd

Cited by 70 publications

References 47 publications

Fermi Surface Charactertics of Palladium

Fermi Surface Charactertics of Palladium

Scattering of spin current injected in Pd(001)

De Haas‐Van Alphen Effect in Nearly Magnetic Transition Metals

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