Bulk and surface conductivity of pure tungsten single crystals under static skin effect

Authors

  • Александр Сергеевич Беликов (Alexander S. Belikov) Ural Federal University
  • Павел Сергеевич Коренистов (Pavel S. Korenistov) Ural Federal University
  • Вячеслав Викторович Марченков (Vyacheslav V. Marchenkov) M.N. Mikheev Institute of Metal Physics UB RAS

DOI:

https://doi.org/10.17072/1994-3598-2018-3-08-13

Keywords:

tungsten single crystals, magnetoresistivity, static skin effect

Abstract

In magnetic fields of up to 50 kOe and at T = 4.2 K, the field dependences of the magnetoresistance of pure tungsten single crystals with a residual resistance ratio ρ293K/ρ4.2K of about 75,000 under the static skin effect, i.e. the concentration of direct current near the conductor surface, were measured. The size effect, i.e. the dependence of the magnetoresistance on the dimensions and shape of the sample as well as the direction of the magnetic field relative to its surface, was studied. It was shown that under these conditions the conductivity (resistivity) near the sample surface is several orders of magnitude higher (lower) than that in the conductor bulk. Using the trivial formulas, it is possible to "separate" the contributions of the bulk and surface conductivities. A similar method can be used to estimate the contributions to the bulk and surface conductivities of more complex systems with an inhomogeneous distribution of electric current across the conductor cross-section

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Published

2018-11-21

How to Cite

Беликов (Alexander S. Belikov) А. С., Коренистов (Pavel S. Korenistov) П. С., & Марченков (Vyacheslav V. Marchenkov) В. В. (2018). Bulk and surface conductivity of pure tungsten single crystals under static skin effect. Bulletin of Perm University. Physics, (3(41). https://doi.org/10.17072/1994-3598-2018-3-08-13

Issue

Section

Regular articles