Published October 2003
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Nernst effect in the pseudogap phase of high Tc superconductors
- 1. Department of Physics and Astronomy, University of Southern California, Los Angeles, CA (United States)
- 2. Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)
- 3. Research Institute for Solid State Physics and Optics, Budapest (Hungary)
- 4. Department of Physics, Budapest University of Technology and Economics, Budapest (Hungary)
Description
We have investigated theoretically the Nernst effect in unconventional (d-wave) charge and spin density waves (UDW). In the presence of magnetic field, Landau levels are formed, and the gapless behaviour of the low energy excitations change into gapped behaviour. When additional electric field is applied, the quasiparticles drift with a velocity of E x B/B2, and carry entropy. From this, the Nernst coefficient can be calculated using the Kelvin relation. The present results account very nicely for the measured Nernst signal in the pseudogap phase of high Tc superconductor La2-xSrxCuO4 and Bi2Sr2-yLayCuO6. This indicates that the large Nernst effect is a clear signature of UDW. (author)
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Additional details
Publishing Information
- Imprint Pagination
- 6 p.
- Report number
- IC--2003/132
INIS
- Country of Publication
- International Atomic Energy Agency (IAEA)
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35047045
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BISMUTH COMPOUNDS; COPPER OXIDES; ELECTRIC FIELDS; HIGH-TC SUPERCONDUCTORS; LANDAU QUASI PARTICLES; LANTHANUM COMPOUNDS; MAGNETIC FIELDS; NERNST EFFECT; QUATERNARY ALLOY SYSTEMS; SPIN WAVES; STRONTIUM COMPOUNDS; TERNARY ALLOY SYSTEMS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; ALLOY SYSTEMS; CHALCOGENIDES; COPPER COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; QUASI PARTICLES; RARE EARTH COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; TYPE-II SUPERCONDUCTORS
Optional Information
- Contract/Grant/Project number
- Grant OTKA T032162; NDF45172; T037976
- Notes
- 20 refs, 1 fig