Anomalous superfluid density in quantum critical superconductors
نویسندگان
چکیده
منابع مشابه
Anomalous superfluid density in quantum critical superconductors.
When a second-order magnetic phase transition is tuned to zero temperature by a nonthermal parameter, quantum fluctuations are critically enhanced, often leading to the emergence of unconventional superconductivity. In these "quantum critical" superconductors it has been widely reported that the normal-state properties above the superconducting transition temperature T(c) often exhibit anomalou...
متن کاملAnomalous critical fields in quantum critical superconductors
Fluctuations around an antiferromagnetic quantum critical point (QCP) are believed to lead to unconventional superconductivity and in some cases to high-temperature superconductivity. However, the exact mechanism by which this occurs remains poorly understood. The iron-pnictide superconductor BaFe2(As(1-x)P(x))2 is perhaps the clearest example to date of a high-temperature quantum critical supe...
متن کاملCritical Amplitude Fluctuations in Low Superfluid Density Two Dimensional Superconductors
We report results of transport measurements in the quantum critical regime of the disorder tuned, 2D superconductor-insulator transition (SIT) in homogeneously disordered films. We show that, as the superconducting transition temperature decreases, the transition width grows, appearing to diverge at the SIT. In addition, structure develops in the DC current-voltage characteristics of films clos...
متن کاملTheory of reduced superfluid density in underdoped cuprate superconductors
Wei-Cheng Lee,1,* Jairo Sinova,2 A. A. Burkov,3 Yogesh Joglekar,4 and A. H. MacDonald1 1Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA 2Department of Physics, Texas A&M University, College Station, Texas 77843-4242, USA 3Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1 4Department of Physics, Indiana University–Pu...
متن کاملSuperfluid and normal fluid density in high-T c superconductors
The electronic properties of the cuprate superconductors have been studied by measuring the reflectance over the frequency range from the far-infrared to the near-ultraviolet (roughly, 10 meV-5 eV). There is an interesting behavior in both the normal state and the superconducting state. In the normal state, there is the well-known non-Drude distribution of the doping-induced spectral weight. In...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2013
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1221976110