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Evolution of the Fermi Surface of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>d</mml:mi></mml:math>-Wave Superconductors in the Presence of Thermal Phase Fluctuations
One of the most puzzling aspects of the high Tc superconductors is the appearance of Fermi arcs in the normal state of the underdoped cuprate materials. These are loci of low energy excitations covering part of the Fermi surface that suddenly appear above Tc instead of the nodal quasiparticles. Based …