Sign reversal of hall coefficients near Tc in high-Tc YBa2Cu3Oy films

H. E. Horng*, H. H. Sung, H. C. Yang, L. M. Wang


研究成果: 雜誌貢獻期刊論文同行評審

3 引文 斯高帕斯(Scopus)


Hall coefficients and resistivities of YBa2Cu3Oy films in super-conducting mixed state have been measured at T near Tc. A sign reversal of Hall coefficients in superconducting mixed state is accounted for in terms of the induced electric field, Eind = B × vL/c. Eind occurs as a result of the motion of the flux-vortex; B the magnetic induction; vL the resultant velocity of the flux vortex; and c the speed of light. The normal carriers were driven to one side of the sample by the transverse component Eind,y (perpendicular to the transport current js). In a steady state, an electric field Eacc, yx would be developed by the accumulated charge carriers and the direction of the Eacc, yx is opposite to that of the Hall electric field in the normal state. A sign reversal of Hall coefficient would occur if Eacc, yx dominates in the transverse electric fields. This picture explains both p-type and n-type superconductors.

頁(從 - 到)537-540
期刊Solid State Communications
出版狀態已發佈 - 1995 2月

ASJC Scopus subject areas

  • 化學 (全部)
  • 凝聚態物理學
  • 材料化學


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