BCS Theory and the superconducting energy gap
Study of BCS-BEC Crossover Physics and Evaluation of Energy Gap Parameters and Chemical Potential from BCS-theory
... the BCS-BEC crossover regime. We have evaluated the value of energy gap parameter and chemical potential for the crossover as a function of dimensionless parameters |K F a s | -1 from ...
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Theory on neutrino self-energy and neutrino oscillation with consideration of superconducting energy gap and Fermi’s golden rule
... 2 energy source (which we call therein as the zero-point ...a theory, which describes the self-energy of a neutrino, as well as the neutrino ...proposed theory, it should be noted that any ...
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Some Implications of an Alternate Equation for the BCS Energy Gap
... dimensionless BCS interaction parameter 0 . Here ∆ 0 is the zero-temperature gap whence it follows that the binding energy of a CP bound via one-phonon exchanges at T = 0 is 2 W 01 ...the ...
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BCS theory
... 2 ) . Not surprisingly, the large fraction (summed over p and n) is precisely the mean-field fermion- loop contribution to the propagator of the pairing field at zero frequency and momentum q. The ratio of the gradient ...
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A Study of Superconducting La2CuO4 via Generalized BCS Equations Incorporating Chemical Potential
... a) As can be seen in [17], Fermi surfaces of elemental SCs too have rather complex structures: none of them has the idealized spherical Fermi surface assumed in BCS theory. And yet, with the exception of a ...
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Superconducting gap and vortex lattice of the heavy fermion compound CeCu2Si2
... observed gap does not open fully, the temperature and magnetic field dependent measurements establish its link to ...low energy support a multigap scenario. The shape of the gap detected in tunneling ...
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AN EVALUATION OF PSEUDO GAP IN HIGH TC- SUPERCONDUCTORS IN BCS-BEC CROSSOVER REGION
... pseudo gap in the single particle ...pseudo gap in the two particle spectrum is derived from the pseudo gap in the single particle ...self energy have been given in Table T 1 and ...
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Impact of damping on the superconducting gap dynamics induced by intense terahertz pulses
... coherent gap dynamics and damping in superconductors taken out of equilibrium by strong optical pulses with subgap terahertz ...mean-field theory, such as interactions between Bogoliubov quasiparticles and ...
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Impact of damping on superconducting gap oscillations induced by intense Terahertz pulses
... the gap function of an s-wave superconductor subject to an in- tense THz ...the gap function is different than that expected for coherent BCS-like ...
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Spatial inhomogeneity of the superconducting gap and order parameter in Se0 4Te0 6
... the superconducting order parameter has not been unambiguously determined so far; also, a predictive theory of superconductivity in iron-based superconductors is still ...the superconducting ...
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Anomalous Inner Gap Structure in Transport Characteristics of Superconducting Junctions with Degraded Interfaces
... Its energy after transferring the barrier is increased by eV ...its energy also increases by eV after the transmission across the ...its energy by the value of 2 eV ...standard theory of ...
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Mean-field theory for the dynamics of superfluid fermions in the BCS-BEC crossover
... tunneling energy E J calculated from the difference in energy of the stationary antisymmetric and symmetric ...on-site energy E C and tunneling energy E J are consis- tently calculated within ...
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Concepts in Condensed Matter Physics: Tutorial IV The BCS Theory of Superconductivity
... The BCS Theory of Superconductivity In the lectures you saw a phenomenological analysis of ...the theory is still incomplete without a microscopic ...this gap by reviewing the famous ...
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SNS Experience with a High-Energy Superconducting Proton Linac
... RF gap ( β changes only slightly in each ...beam energy, cavity amplitude and klystron phase offset from the synchronous phase ...RF- gap, and all cavities show a similar ...beam energy, ...
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Random-matrix theory of thermal conduction in superconducting quantum dots.
... II. FORMULATION OF THE PROBLEM A. Andreev quantum dot An Andreev quantum dot, or Andreev billiard, is a con- fined region in a two-dimensional electron gas connected to superconducting electrodes 共see Fig. 1兲. ...
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THEORY OF PEIERLS DISTORTION, KOHN ANOMALY AND SUPERCONDUCTING TRANSITION TEMPERATURE
... G. K. Solanki 1 , A. T. Oza 2 1,2 Department of Physics, Sardar Patel University, Vallabh Vidyanagar – 388 120, Gujarat, (India) ABSTRACT Recently seven organic conductors have shown A=A 0 λe -bλ type function in ...
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Energy Gap in Saturn’s Rings
... the superconducting state of ...exchange energy, and therefore, they cannot transfer heat from one part of ice to another ...more superconducting protons do not participate in heat ...
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Upper critical field of KFe2As2 under pressure: A test for the change in the superconducting gap structure
... of Energy, Iowa State University, Ames, Iowa 50011, USA 3 Physics Department, Washington University, ...the superconducting transition temperature T c (p) at a pressure p ∗ ∼ ...the superconducting ...
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Effects of superconducting gap anisotropy on the flux flow resistivity in Y(Ni1 xPtx)2B2C
... Figure 3 plots 1 / res as a function of H/H c2 . In the sample with x ⫽ 0, in which the SG is strongly anisotropic, 1 , namely, f , below about a half of H c2 is almost propor- tional to H as in the case of the ...
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Doping dependence of low energy quasiparticle excitations in superconducting Bi2212
... d-wave superconducting state is studied from the perspective of the angle-resolved photoemission spectra of a high-T c cuprate, Bi 2 Sr 2 CaCu 2 O 8+ δ ...the energy gap for Bogoliubov quasiparticles ...
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