Evidence of Two-Dimensional Quantum Critical Behavior in the Superfluid Density of Deeply Underdoped Bi2Sr2CaCu2O8+x

Abstract

Evidence of two-dimensional (2D) quantum critical fluctuations is observed in the superfluid density ns(T) \propto $\lambda$ -2(T) of deeply underdoped Bi2Sr2CaCu2O8+x (Bi-2212) films, indicating that quantum fluctuations play a dominant role in underdoped cuprates in general. 2D fluctuations are expressed by the linear scaling, Tc \propto ns(0). 2D scaling in Bi-2212 contrasts with 3D scaling seen in the much less anisotropic YBa2Cu3O7-x. Quantum critical fluctuations could also account for the absence of thermal critical behavior in λ^{-2}(T) of strongly underdoped Bi-2212 samples, Tc < 48 K.

arXiv comment10 pages, 2 figures. arXiv admin note: substantial text overlap with arXiv:1109.4549

References in corpus (13)

• Vanishing of phase coherence in underdoped Bi_2Sr_2CaCu_2O_8+d
• Evaluation of CuO2 plane hole doping in YBa2Cu3O6+x single crystals
• Quantum critical behaviour in the superfluid density of strongly underdoped ultrathin cuprate films
• Superfluid Density in a Highly Underdoped YBCO Superconductor
• Criticality in correlated quantum matter
• Correlation between superfluid density and Tc of underdoped YBa2Cu3O6+x near the superconductor-insulator transition
• Strongly nonlinear magnetization above $T_c$ in $\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{r}}_2\mathrm{CaC}{\mathrm{u}}_2{\mathrm{O}}_{8+\delta }$
• Superconductor-to-Metal Quantum Phase Transition in Overdoped $L{a}_{2-x}S{r}_{x}Cu{O}_4$
• Effective theory of high-temperature superconductors
• 4D-XY quantum criticality in a doped Mott insulator
• Effect of thermal phase fluctuations on the superfluid density of two-dimensional superconducting films
• Tuning the interlayer spacing in high T_c superconductors: penetration depth and two-dimensional superfluid density
• Effect of Thermal Phase Fluctuations on the Inductances of Josephson Junctions, Arrays of Junctions, and Superconducting Films

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• Broadening of the Berezinskii-Kosterlitz-Thouless transition by correlated disorder
• $BKT$ transitions in classical and quantum long-range systems
• Interplay of spin waves and vortices in the 2D XY model at small vortex-core energy
• Slowing down of vortex motion in thin NbN films near the superconductor-insulator transition
• BKT universality class in the presence of correlated disorder
• Disordered XY model: effective medium theory and beyond
• Superfluid density in the slave-boson theory
• Doping-dependent critical Cooper-pair momentum in thin, underdoped cuprate films
• Berezinskii-Kosterlitz-Thouless phase transitions with long-range couplings