Spin-Dependent Tunnel Currents in Junctions Involving Charge-Density-Wave Metals

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概要

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• We have calculated the voltage, $V$, characteristics of the differential tunnel conductance $G(V)$ for two general set-ups of junctions involving normal and superconducting charge-density-wave metals (CDWMs) in the external magnetic field $H$. The first one is non-symmetrical having a CDWM electrode biased with respect to a ferromagnetic (FM) one. Calculations show that paramagnetic splitting occurs between spin-up and spin-down components of $G(V)$, similar to what happens when a superconducting (S) electrode is used instead of the CDWM one. The second set-up is symmetric (CDWM–CDWM), which is achievable, for example, by the break-junction technique. At $H \neq 0$, $G(V)$ will also be spin-split, in contrast to what is appropriate to the S–S case. In both cases, the forms of $G(V)$ depends on the phases of the CDWM order parameter.

• 2006-03-15

著者

• Li Mai

  Institute Of Physics Polish Academy Of Sciences

• Ekino Toshikazu

  Hiroshima Univ. Hiroshima

• Li Mai

  Institute of Physics, PAN, Al. Lotnikow 32/46, PL-02-668 Warsaw, Poland

• Voitenko Alexander

  Institute of Physics, NASU, prospekt Nauki 46, 03028 Kiev, Ukraine

• Gabovich Alexander

  Institute of Physics, NASU, prospekt Nauki 46, 03028 Kiev, Ukraine

• Pȩkaŀa Marek

  Department of Chemistry, University of Warsaw, Al. Zwirki i Wigury 101, PL-02-089 Warsaw, Poland

• Szymczak Henryk

  Institute of Physics, PAN, Al. Lotnikow 32/46, PL-02-668 Warsaw, Poland

• Ekino Toshikazu

  Hiroshima University, Faculty of Integrated Arts and Sciences, Higashi-Hiroshima, Hiroshima 739-8521, Japan

• Pȩkaŀa Marek

  Department of Chemistry, University of Warsaw, Al. Zwirki i Wigury 101, PL-02-089 Warsaw, Poland

関連論文

• Spin-Dependent Tunnel Currents in Junctions Involving Charge-Density-Wave Metals
• Tunnel Currents in Charge-Density-Wave Metal-Insulator-Charge-Density-Wave Metal Structures : Magnetic Field-induced Spin-splitting of the Conductance Peaks(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)

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