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...
| Main Authors: | , , , , |
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| Format: | Text |
| Language: | unknown |
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Universität Regensburg
2006
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5283/epub.46225 https://epub.uni-regensburg.de/id/eprint/46225 |
| 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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