Electronic structure and magnetic susceptibility of nearly magnetic metals (palladium and platinum)

Povzner, A. A.; Volkov, A. G.; Filanovich, A. N.

doi:10.1134/s1063783410100021

Cited by 13 publications

(8 citation statements)

References 14 publications

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“…Thus, the electronic states and physical properties of the β phase are quite different from Pd. In Pd, although the electronic configuration of the atomic Pd is [Kr]4d 10 5 s 0 , the 4d band of fcc Pd is not filled and the Fermi level is located at the 4d band due to an overlap of 4d and 5 s bands (Figure a) ,. In the β phase, a Pd−H chemical bond is formed, resulting in the formation of bonding and antibonding bands below and above the 4d band (Figure b) .…”

Section: Hydrogen In Bulk Pdmentioning

confidence: 99%

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Hydrogen in Palladium and Storage Properties of Related Nanomaterials: Size, Shape, Alloying, and Metal‐Organic Framework Coating Effects

et al. 2019

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One of the key issues for an upcoming hydrogen energy-based society is to develop highly efficient hydrogen-storage materials. Among the many hydrogen-storage materials reported, transition-metal hydrides can reversibly absorb and desorb hydrogen, and have thus attracted much interest from fundamental science to applications. In particular, the PdÀ H system is a simple and classical metal-hydrogen system, providing a platform suitable for a thorough understanding of ways of controlling the hydrogen-storage properties of materials. By contrast, metal nanoparticles have been recently studied for hydrogen storage because of their unique properties and the degrees of freedom which cannot be observed in bulk, i. e., the size, shape, alloying, and surface coating. In this review, we overview the effects of such degrees of freedom on the hydrogen-storage properties of Pd-related nanomaterials, based on the fundamental science of bulk PdÀ H. We shall show that sufficiently understanding the nature of the interaction between hydrogen and host materials enables us to control the hydrogen-storage properties though the electronic-structure control of materials.[a] Dr.

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Section: Hydrogen In Bulk Pdmentioning

confidence: 99%

“…Such a change in electronic states drastically changes physical properties. Due to its high DOS at the Fermi level, Pd shows a strong temperature‐dependent paramagnetism ,. In the β phase, because the Fermi level is located at the 5 s band, the DOS at the Fermi level is much smaller than in pure Pd.…”

Section: Hydrogen In Bulk Pdmentioning

confidence: 99%

Hydrogen in Palladium and Storage Properties of Related Nanomaterials: Size, Shape, Alloying, and Metal‐Organic Framework Coating Effects

et al. 2019

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“…The decrease follows a A ∝ T −3/2 behavior, as expected for ES-VRH. The temperature dependence of the correlation function < P i P j > relates to the changes of the DOS, which was shown to be temperature dependent for Pt metals [31].…”

Section: Resultsmentioning

confidence: 99%

Magnetoresistance of granular Pt–C nanostructures close to the metal–insulator transition

Porrati¹,

Sachser²,

Huth³

2014

J. Phys.: Condens. Matter

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We investigate the electrical and magneto-transport properties of Pt-C granular metals prepared by focused-electron-beam induced deposition. In particular, we consider samples close to the metal-insulator-transition obtained from as-grown deposits by means of a lowenergy electron irradiation treatment. The temperature dependence of the conductivity shows a σ ∼ lnT behavior with a transition to σ ∼ √ T at low temperature, as expected for systems in the strong-coupling tunneling regime. The magnetoresistance is positive and is described within the wave-function shrinkage model, normally used for disordered system in the weak-coupling regime. In order to fit the experimental data spin-dependent tunneling has to be taken into account. In the discussion we attribute the origin of the spin-dependency to confinement effects of Pt nano-grains embedded in the carbon matrix.

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“…Here U is Hubbard parameter that represent the electron-electron interaction strength and N ( F ) is the density of state at Fermi energy. The effects of large Stoner enhancement on magnetic susceptibility have been thoroughly studied [11][12][13]. However, the studies exploring the effects of electron-electron interaction on spin mixing conductance are still few [14].…”

Section: Introductionmentioning

confidence: 99%

Effects of screened Coulomb interaction on spin transfer torque

Cahaya,

Majidi

2021

Preprint

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In magnetic multilayer, magnetizations can be manipulated by spin transfer torque. Both spin transfer torque and its reciprocal effect, spin pumping, are governed by spin mixing conductance. The magnitude of spin mixing conductance at the interface of nearly magnetic metal has been theoretically shown to be enhanced by electron -electron interaction. However, experiments show both increasing and decreasing values of spin mixing conductance for metals with larger electronelectron interaction. Here we take into account the effect of electron -electron interaction on the screening of the Coulomb interaction at the magnetic interface to correctly describe the experiment.

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Electronic structure and magnetic susceptibility of nearly magnetic metals (palladium and platinum)

Cited by 13 publications

References 14 publications

Hydrogen in Palladium and Storage Properties of Related Nanomaterials: Size, Shape, Alloying, and Metal‐Organic Framework Coating Effects

Hydrogen in Palladium and Storage Properties of Related Nanomaterials: Size, Shape, Alloying, and Metal‐Organic Framework Coating Effects

Magnetoresistance of granular Pt–C nanostructures close to the metal–insulator transition

Effects of screened Coulomb interaction on spin transfer torque

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