Low-Field de Haas-van Alphen Effect in Gold

Joseph, A. S.; Thorsen, A. C.; Blum, F. A.

doi:10.1103/physrev.140.a2046

Cited by 48 publications

(13 citation statements)

References 6 publications

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“…The effective masses are: copper, 1.38; silver, 1.01; gold 1.09. These effective masses are very similar to the "belly" cyclotron effective masses observed for copper, 18 silver, 19 and gold, 20 respectively. Fermi surfaces 21 for these metals obtained from de Haas-van Alphen-effect 22 results show that gold is the most anisotropic and that silver, apart from the neck regions, is closest to a free-electron sphere.…”

Section: Discussionsupporting

confidence: 77%

Specific Heats below 3°K of Pure Copper, Silver, and Gold, and of Extremely Dilute Gold-Transition-Metal Alloys

Martin

1968

Phys. Rev.

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Section: Discussionsupporting

confidence: 77%

Specific Heats below 3°K of Pure Copper, Silver, and Gold, and of Extremely Dilute Gold-Transition-Metal Alloys

Martin

1968

Phys. Rev.

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“…Fourier transforms (Fig. 4c, e) of the torque data show fundamental frequencies at F α 3 = 855 T, F ε 1 = 2120 T, F η = 3550 T, and F ξ = 14,560 T. Such a large frequency of 14,560 T is observed only in some selected materials 21,38,39 . This reveals large Fermi pockets which are usually not expected in typical Dirac 10 and Weyl semimetals 9,11 .…”

Section: Resultsmentioning

confidence: 89%

Extremely high conductivity observed in the triple point topological metal MoP

et al. 2019

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Weyl and Dirac fermions have created much attention in condensed matter physics and materials science. Recently, several additional distinct types of fermions have been predicted. Here, we report ultra-high electrical conductivity in MoP at low temperature, which has recently been established as a triple point fermion material. We show that the electrical resistivity is 6 nΩ cm at 2 K with a large mean free path of 11 microns. de Haas-van Alphen oscillations reveal spin splitting of the Fermi surfaces. In contrast to noble metals with similar conductivity and number of carriers, the magnetoresistance in MoP does not saturate up to 9 T at 2 K. Interestingly, the momentum relaxing time of the electrons is found to be more than 15 times larger than the quantum coherence time. This difference between the scattering scales shows that momentum conserving scattering dominates in MoP at low temperatures.

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“…3 Because of the doubt, mentioned above, about the accuracy obtainable when using a superconducting solenoid, we decided to use the torque method to give an independent check of our figure.…”

Section: Methodsmentioning

confidence: 99%

Electronic Structure of Magnetic Impurities in Copper

Sokoloff

1967

Phys. Rev.

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A model is presented for dilute iron-series magnetic impurities in copper, which is a generalization of the work of Anderson and the work of Wolff taking into consideration the band structure of copper. The impurity virtual states are treated as bound states pushed out of the 3d bands of copper and broadened into virtual states by admixture with the conduction band. The copper energy bands are represented by an interpolation scheme developed by Hodges and Ehrenreich fit to the energy-band calculation done by Burdick. The equations of motion for the single-particle Green's function of the perturbed lattice are solved in the Hartree-Fock approximation using the Koster-Slater method, and from this Green's function the charge density is calculated and used to solve the equations of motion self-consistently. The bound states at or above the Fermi energy are found to be better than 95% localized to the impurity site, and therefore simplifications result from treating the problem in a hole formalism (i.e., the localized moment is attributed to unoccupied bound states at the impurity site). The effects of crystal-field splitting and spin-orbit coupling on the bound states are discussed. Bohr magneton numbers are calculated and found to be in agreement with experiment in most cases. The net polarization of the conduction bands is also discussed and found to agree semiquantitatively with experiment.

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Low-Field de Haas-van Alphen Effect in Gold

Cited by 48 publications

References 6 publications

Specific Heats below 3°K of Pure Copper, Silver, and Gold, and of Extremely Dilute Gold-Transition-Metal Alloys

Specific Heats below 3°K of Pure Copper, Silver, and Gold, and of Extremely Dilute Gold-Transition-Metal Alloys

Extremely high conductivity observed in the triple point topological metal MoP

Electronic Structure of Magnetic Impurities in Copper

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