Coherence and Pairing in a Doped Mott Insulator: Application to the Cuprates
Author(s)Lee, Patrick A.; Senthil, Todadri
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The issues of single particle coherence and its interplay with singlet pairing are studied within the slave boson gauge theory of a doped Mott insulator. Prior work by one of us [T. Senthil, Phys. Rev. B 78, 045109 (2008)] showed that the coherence scale below which Landau quasiparticles emerge is parametrically lower than that identified in the slave boson mean field theory. Here we study the resulting new non-Fermi liquid intermediate temperature regime characterized by a single particle scattering rate that is linear in temperature (T). In the presence of a d-wave pair amplitude, this leads to a pseudogap state with T-dependent Fermi arcs near the nodal direction. Implications for understanding the cuprates are discussed.
DepartmentMassachusetts Institute of Technology. Department of Physics
Physical Review Letters
American Physical Society
Senthil, T. , and Patrick A. Lee. “Coherence and Pairing in a Doped Mott Insulator: Application to the Cuprates.” Physical Review Letters 103.7 (2009): 076402. (C) 2010 The American Physical Society.
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