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HAIT Journal of Science and Engineering Volume 1, Issue 3, pp. 528-541 © 2004 Holon Academic Institute of Technology | ||||||
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Quantum Hall effects and edge states in layered disordered superconductors
Baruch Horovitz1,*, Victor Kagalovsky2, and Yshai Avishai1
1Department of Physics and Ilze Katz Center for Nanotechnology, | Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel 2Negev Academic College of Engineering, Beer-Sheva 84100, Israel *Corresponding author: hbaruch@bgumail.bgu.ac.il Received 24 November 2004, accepted 15 December 2004
| Layered singlet paired superconductors with disorder and broken time reversal symmetry are studied focusing on edge states and the corresponding quantum Hall effects. We find quantum Hall phases with spin Hall coefficients of sxyspin=0,2 separated by a spin metal phase. We identify a spin metal-insulator localization exponent as well as a spin conductivity exponent of ~ 0.96. In presence of a Zeeman term an additional sxyspin=1 phase appears. The phase diagram, in terms of the average intergrain transmission and the interlayer tunneling, demonstrates charge-spin separation in transport
___________________ | Presented at International Workshop Correlated Electrons at High Magnetic Fields. Ein-Gedi/Holon, Israel, 19-23 December 2004 |