Matches in SemOpenAlex for { <https://semopenalex.org/work/W2040666313> ?p ?o ?g. }
- W2040666313 abstract "We have used large pulsed magnetic fields up to 60 T to suppress the contribution of superconducting fluctuations (SCFs) to the $ab$-plane conductivity above ${T}_{c}$ in a series of YBa${}_{2}$Cu${}_{3}$O${}_{6+x}$ from the deep pseudogapped state to slight overdoping. Accurate determinations of the SCF contribution to the conductivity versus temperature and magnetic field have been achieved. Their joint quantitative analyses with respect to Nernst data allow us to establish that thermal fluctuations following the Ginzburg-Landau scheme are dominant for nearly optimally doped samples. The deduced coherence length $ensuremath{xi}(T)$ is in perfect agreement with a Gaussian (Aslamazov-Larkin) contribution for $1.01{T}_{c}ensuremath{lesssim}Tensuremath{lesssim}1.2{T}_{c}$. A phase-fluctuation contribution might be invoked for the most underdoped samples in a $T$ range which increases when controlled disorder is introduced by electron irradiation. For all dopings we evidence that the fluctuations are highly damped when increasing $T$ or $H$. This behavior does not follow the Ginzburg-Landau approach, which should be independent of the microscopic specificities of the superconducting state. The data permits us to define a field ${H}_{c}^{ensuremath{'}}(T)$ and a temperature ${T}_{c}^{ensuremath{'}}$ above which the SCFs are fully suppressed. The analysis of the fluctuation magnetoconductance in the Ginzburg-Landau approach allows us to determine the critical field ${H}_{c2}(0)$. The actual values of ${H}_{c}^{ensuremath{'}}(0)$ and ${H}_{c2}(0)$ are found to be quite similar and both increase with hole doping. These depairing fields, which are directly connected to the magnitude of the superconducting gap, do therefore follow the ${T}_{c}$ variation which is at odds with the sharp decrease of the pseudogap ${T}^{*}$ with increasing hole doping. This is on line with our previous evidence that ${T}^{*}$ is not the onset of pairing. So the large gap seen by spectroscopic experiments in the underdoped regime has to be associated with the pseudogap. We finally propose here a three-dimensional phase diagram including a disorder axis, which makes it possible to explain most peculiar observations done so far on the diverse cuprate families." @default.
- W2040666313 created "2016-06-24" @default.
- W2040666313 creator A5004293023 @default.
- W2040666313 creator A5043438295 @default.
- W2040666313 creator A5084446674 @default.
- W2040666313 date "2011-07-28" @default.
- W2040666313 modified "2023-09-30" @default.
- W2040666313 title "High-field studies of superconducting fluctuations in high-<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mi>T</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math>cuprates: Evidence for a small gap distinct from the large pseudogap" @default.
- W2040666313 cites W126312954 @default.
- W2040666313 cites W1507878287 @default.
- W2040666313 cites W1519157372 @default.
- W2040666313 cites W1530810083 @default.
- W2040666313 cites W1537984312 @default.
- W2040666313 cites W1550762220 @default.
- W2040666313 cites W1568181054 @default.
- W2040666313 cites W1575429982 @default.
- W2040666313 cites W1582252665 @default.
- W2040666313 cites W1592982270 @default.
- W2040666313 cites W1595584690 @default.
- W2040666313 cites W1621010667 @default.
- W2040666313 cites W1692199730 @default.
- W2040666313 cites W1767457589 @default.
- W2040666313 cites W1776287975 @default.
- W2040666313 cites W1963491892 @default.
- W2040666313 cites W1964092820 @default.
- W2040666313 cites W1964538764 @default.
- W2040666313 cites W1966138251 @default.
- W2040666313 cites W1967960777 @default.
- W2040666313 cites W1970329637 @default.
- W2040666313 cites W1970408687 @default.
- W2040666313 cites W1973252323 @default.
- W2040666313 cites W1976901952 @default.
- W2040666313 cites W1977349535 @default.
- W2040666313 cites W1981465095 @default.
- W2040666313 cites W1984874116 @default.
- W2040666313 cites W1987311276 @default.
- W2040666313 cites W1988754722 @default.
- W2040666313 cites W1994806634 @default.
- W2040666313 cites W1995991300 @default.
- W2040666313 cites W1996978459 @default.
- W2040666313 cites W1998813046 @default.
- W2040666313 cites W1999493866 @default.
- W2040666313 cites W2004660215 @default.
- W2040666313 cites W2007695974 @default.
- W2040666313 cites W2008712668 @default.
- W2040666313 cites W2009871519 @default.
- W2040666313 cites W2011685531 @default.
- W2040666313 cites W2012032353 @default.
- W2040666313 cites W2013480678 @default.
- W2040666313 cites W2013783780 @default.
- W2040666313 cites W2014572030 @default.
- W2040666313 cites W2015870609 @default.
- W2040666313 cites W2016725224 @default.
- W2040666313 cites W2018281536 @default.
- W2040666313 cites W2020052037 @default.
- W2040666313 cites W2024147048 @default.
- W2040666313 cites W2029150300 @default.
- W2040666313 cites W2031033710 @default.
- W2040666313 cites W2037724287 @default.
- W2040666313 cites W2040487097 @default.
- W2040666313 cites W2042360747 @default.
- W2040666313 cites W2045299132 @default.
- W2040666313 cites W2047324877 @default.
- W2040666313 cites W2051318464 @default.
- W2040666313 cites W2058182867 @default.
- W2040666313 cites W2060302681 @default.
- W2040666313 cites W2061244861 @default.
- W2040666313 cites W2061517688 @default.
- W2040666313 cites W2063143105 @default.
- W2040666313 cites W2066172608 @default.
- W2040666313 cites W2074089121 @default.
- W2040666313 cites W2076442312 @default.
- W2040666313 cites W2078323178 @default.
- W2040666313 cites W2078743364 @default.
- W2040666313 cites W2080616244 @default.
- W2040666313 cites W2081241180 @default.
- W2040666313 cites W2083793838 @default.
- W2040666313 cites W2086566929 @default.
- W2040666313 cites W2090626648 @default.
- W2040666313 cites W2091824258 @default.
- W2040666313 cites W2093127955 @default.
- W2040666313 cites W2102291957 @default.
- W2040666313 cites W2137029526 @default.
- W2040666313 cites W2151796371 @default.
- W2040666313 cites W2156177701 @default.
- W2040666313 cites W2167223745 @default.
- W2040666313 cites W2252380758 @default.
- W2040666313 cites W2253037120 @default.
- W2040666313 cites W2315585359 @default.
- W2040666313 cites W3100835272 @default.
- W2040666313 cites W3106030155 @default.
- W2040666313 cites W3124401528 @default.
- W2040666313 cites W4210745439 @default.
- W2040666313 doi "https://doi.org/10.1103/physrevb.84.014522" @default.
- W2040666313 hasPublicationYear "2011" @default.
- W2040666313 type Work @default.
- W2040666313 sameAs 2040666313 @default.
- W2040666313 citedByCount "92" @default.
- W2040666313 countsByYear W20406663132012 @default.
- W2040666313 countsByYear W20406663132013 @default.