First observation for a cuprate superconductor of fluctuation-induced diamagnetism well inside the finite-magnetic-field regime
نویسندگان
چکیده
For the first time for a cuprate superconductor, measurements performed above T(c) in high quality grain aligned La1.9Sr0.1CuO4 samples have allowed the observation of the thermal fluctuation induced diamagnetism well inside the finite-magnetic-field fluctuation regime. These results may be explained in terms of the Gaussian Ginzburg-Landau approach for layered superconductors, but only if the finite field contributions are estimated by taking off the short-wavelength fluctuations.
منابع مشابه
Comment on "Field-enhanced diamagnetism in the pseudogap state of the cuprate Bi(2)Sr(2)CaCu(2)O(8+delta) superconductor in an intense magnetic field".
In a recent Letter[1], Wang et al. claim that “the magnetization results above TC distinguish M from conventional amplitude fluctuations and strongly support the vortex scenario for the loss of phase coherence at TC .” However, we will present here some examples for T > TC that show that the data of Ref.[1] may be explained on the grounds of the conventional Ginzburg-Landau (GL) scenario. We ha...
متن کاملتاثیر اندازه محدود بر روی تابش تراهرتز از یک محیط ابررسانا
The Tera hertz radiation from a finite size superconductor media inside a magnetic field has been investigated. The tera hertz radiation is due to the flux flow motion inside the media. The electromagnetic fields inside the superconductor due to fluxons are calculated and using those fields, the radiation is obtained. In this research, the effects of finite size on the radiated power and signal...
متن کاملQuantum critical scaling at the edge of Fermi liquid stability in a cuprate superconductor.
In the high-temperature cuprate superconductors, the pervasiveness of anomalous electronic transport properties suggests that violation of conventional Fermi liquid behavior is closely tied to superconductivity. In other classes of unconventional superconductors, atypical transport is well correlated with proximity to a quantum critical point, but the relative importance of quantum criticality ...
متن کاملFermi surface of the electron-doped cuprate superconductor Nd2−xCexCuO4 probed by high- field magnetotransport
We report on the study of the Fermi surface of the electrondoped cuprate superconductor Nd2−xCexCuO4 by measuring the interlayer magnetoresistance as a function of the strength and orientation of the applied magnetic field. We performed experiments in both steady and pulsed magnetic fields on high-quality single crystals with Ce concentrations of x = 0.13–0.17. In the overdoped regime of x > 0....
متن کاملBlood Flow Simulation in an Aorta with a mild coarctation Using Magnetic Resonance Angiography and Finite Volume Method
Coarctation of the aorta is one of the five main congenital cardiovascular failures, accounting for 6–8 percent of these failures. This research aimed to simulate the blood flow of a seventeen-year-old male teen with a mild coarctation at one-third of his aorta's descending branch. The simulation was performed by extracting the domain and the input pulsatile velocity signal as the boundary cond...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Physical review letters
دوره 84 14 شماره
صفحات -
تاریخ انتشار 2000