On Nernst effect and quantum oscillations in NCCO

Details On Nernst effect and quantum oscillations in NCCO On Nernst effect and quantum oscillations in NCCO

2009-06-29

arxiv.org/abs/0906.5091v1

Physics

Condensed Matter

Superconductivity

11 pages, 10 figures

Scientific paper

We start with a mean field Hamiltonian in momentum space for NCCO to investigate the magnetic quantum oscillations (MQO) exhibited by this system in the normal state. We first obtain an expression for the entropy of the system which is useful to explain the Nernst effect. We next derive the density of states at Fermi energy and the longitudinal electrical conductivity expression to explore the possibility of MQO. We find that the slow (1/B)-oscillations, with frequency nearly 330 T, arise from the hole pockets at the optimal doping. The faster oscillations at slightly higher doping level is found to have the frequency nearly equal to 900 T.

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