Quantum criticality of d-wave quasiparticles and superconducting phase fluctuations

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dc.creatorVafek, Oskar
dc.creatorTesanovic, Zlatko
dc.date2003-05-22
dc.date2003-12-02
dc.date.accessioned2026-07-07T02:51:29Z
dc.date.available2026-07-07T02:51:29Z
dc.descriptionWe present finite temperature extension of the QED$_3$ theory of underdoped cuprates. The theory describes nodal quasiparticles whose interactions with quantum proliferated vortex-antivortex pairs are represented by an emergent U(1) gauge field. Finite temperature introduces a scale beyond which the long wavelength fluctuations in the spatial components of vorticity are suppressed. As a result, the spin susceptibility of the pseudogap state is bounded by $T^2$ at low T and crosses over to $\sim T$ at higher $T$, while the low-$T$ electronic specific heat scales as $T^2$, reflecting the thermodynamics of QED$_3$. The Wilson ratio vanishes as $T\to 0$. This non-Fermi liquid behavior originates from two general principles: spin correlations induced by ``gauge'' interactions of quasiparticles and fluctuating vortices and the ``relativistic'' scaling of the T=0 fixed point.
dc.description5 pages; published version
dc.identifierhttps://arxiv.org/abs/cond-mat/0305518
dc.identifierhttp://arxiv.org/abs/cond-mat/0305518
dc.identifierPhys. Rev. Lett. 91, 237001 (2003)
dc.identifierdoi:10.1103/PhysRevLett.91.237001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21473
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleQuantum criticality of d-wave quasiparticles and superconducting phase fluctuations
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