Quantum Hall effects in layered disordered superconductors |
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Authors: | Kagalovsky V Horovitz B Avishai Y |
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Institution: | Negev Academic College of Engineering, Beer-Sheva 84100, Israel. |
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Abstract: | Layered singlet paired superconductors with disorder and broken time reversal symmetry are studied, demonstrating a phase diagram with charge-spin separation in transport. In terms of the average intergrain transmission and the interlayer tunneling we find quantum Hall phases with spin Hall coefficients of sigma(spin)(xy)=0,2 separated by a spin metal phase. We identify a spin metal-insulator localization exponent as well as a spin conductivity exponent of approximately 0.96. In the presence of a Zeeman term an additional sigma(spin)(xy)=1 phase appears. |
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