Griffiths phase in the thermal quantum Hall effect
Two-dimensional disordered superconductors with broken spin-rotation and time-reversal invariance, e.g., with px+ipy pairing, can exhibit plateaus in the thermal Hall coefficient (the thermal quantum Hall effect). Our numerical simulations show that the Hall insulating regions of the phase diagram c...
| Published in: | Physical Review B |
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| Main Authors: | , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
American Physical Society (APS)
2006
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| Subjects: | |
| Online Access: | https://epub.uni-regensburg.de/46225/ https://epub.uni-regensburg.de/46225/1/PhysRevB.73.121301.pdf https://doi.org/10.1103/PhysRevB.73.121301 |
| Summary: | Two-dimensional disordered superconductors with broken spin-rotation and time-reversal invariance, e.g., with px+ipy pairing, can exhibit plateaus in the thermal Hall coefficient (the thermal quantum Hall effect). Our numerical simulations show that the Hall insulating regions of the phase diagram can support a sub-phase where the quasiparticle density of states is divergent at zero energy, ρ(E)∼∣E∣∣1∕z−1, with a nonuniversal exponent z>1, due to the effects of rare configurations of disorder (Griffiths phase). |
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