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26 April 2024 |
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Infrared hall effect in high- T(c) superconductors: evidence for non-fermi-liquid hall scattering | | J Cerne
; M Grayson
; D C Schmadel
; G S Jenkins
; H D Drew
; R Hughes
; A Dabkowski
; J S Preston
; P Kung
; | | Date: |
10 Apr 2000 | | Journal: | Phys Rev Lett, 84 (15), 3418-21 | | Abstract: | Infrared ( 20-120 and 900-1100 cm(-1)) Faraday rotation and circular dichroism are measured in high- T(c) superconductors using sensitive polarization modulation techniques. Optimally doped YBa2Cu3O7 thin films are studied at temperatures in the range ( 15<T<300 K) and magnetic fields up to 8 T. At 1000 cm(-1) the Hall conductivity sigma(xy) varies strongly with temperature in contrast to the longitudinal conductivity sigma(xx) which is nearly independent of temperature. The Hall scattering rate gamma(H) has a T2 temperature dependence but, unlike a Fermi liquid, depends only weakly on frequency. The experiment puts severe constraints on theories of transport in the normal state of high- T(c) superconductors. | | Source: | PubMed, pmid11019104 | | Services: | Forum | Review | Favorites | |
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