M. Aichhorn and E. Arrigoni 2005 Europhys. Lett. 72 117 doi:10.1209/epl/i2005-10192-1
Weak phase separation and the pseudogap in the electron-doped cuprates
M. Aichhorn and E. Arrigoni
Show affiliationsWe study the quantum transition from an antiferromagnet to a superconductor in a model for electron- and hole-doped cuprates by means of a variational cluster perturbation theory approach. In both cases, our results suggest a tendency towards phase separation between a mixed antiferromagnetic-superconducting phase at low doping and a pure superconducting phase at larger doping. However, in the electron-doped case the energy scale for phase separation is an order of magnitude smaller than for hole doping. We argue that this can explain the different pseudogap and superconducting transition scales in hole- and electron-doped materials.
- PACS
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74.20.-z Theories and models of superconducting state
- Subjects
- Dates
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Issue 1 (October 2005)
Received 12 May 2005, accepted for publication 27 July 2005, in final form 27 July 2005
Published 26 August 2005
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Weak phase separation and the pseudogap in the electron-doped cuprates
M. Aichhorn and E. Arrigoni 2005 Europhys. Lett. 72 117
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