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Showing 1 to 10 of 10 for “"Bi-2212"”.
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Angle-Resolved Photoemission Studies on the Many-Body Effects of High-Temperature Superconductor: Bi-2212
… such as cuprates are believed to exhibit spin-fluctuation-mediated pairing, as opposed to conventional superconductors where phonons mediate Cooper pairing. Dynamic spin susceptibility can characterize these fluctuations. It describes the magnetic response of the system to …
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Superfluid Density Measurements of High-Temperature Superconducting Films
… intrinsic properties of YBa2Cu3O7-x (YBCO) and Bi2Sr2CaCu2O8+δ (Bi-2212) films. Two competing models of the pseudogap are compared to the temperature dependence of the superfluid density as a function of doping in Bi-2212. Near zero temperature, a maximum in the superfluid density as a function …
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Die Fermifläche des Kupratsupraleiters Bi2Sr2CaCu2O8+[delta] : Ergebnisse der winkelaufgelösten Photoemissionsspektroskopie
Das Forschungsgebiet der Kuprat- oder Hochtemperatursupraleiter (HTSL) ist bis heute einer der lebendigsten Bereiche der Physik kondensierter Materie. Ein besonderer Stellenwert kommt dem normalleitenden Zustand oberhalb TC zu, dessen Verständnis wesentlich zu einer Theorie der …
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Numerical modelling of current transfer in nonlinear anisotropic conductive media
… appropriate to macroscopic models of the Bi-2212 CRT system has been experimentally examined using a specifically constructed apparatus for the measurement of current transport characteristics. A study of the self-field properties of the Bi-2212 CRT material using a new experimental …
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Charge fluctuations of the strange metal in space and time
… ruthenate strange metal families are studied: Bi-2212 and Sr$_2$RuO$_4$. By studying Bi-2212 at optimal doping, it is found that the charge response of the strange metal is characterized by a broad continuum of fluctuations that are momentum and energy independent over a large range of …
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Investigation of renormalization effects in high temperature cuprate superconductors
… for a fixed momentum. It was shown that for the Bi-2212 samples substitution of Cu atoms in Cu-O plane changes renormalization features in ARPES spectra both in nodal and antinodal parts of the Brillouin zone. The smearing of the dip in the in the spectral line shape measured at (pi; 0) point can …
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STM studies of the nanoscale electronic landscape of the cuprates
… checkerboard order in the cuprate superconductor Bi2Sr 2CuO6+x (Bi-2201). The main result, that the wavelength of checkerboard order increases with doping and is independent of temperature, is consistent with a charge density wave origin of the checkerboard and is inconsistent with many other …
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Texture improvements in the high-temperature superconducting Bi₂Sr₂Ca₁Cu₂Ox̳/Ag system via surface energy driven grain alignment
… in the high-temperature superconducting Bi₂Sr₂Ca₁Cu₂Ox̳/Ag system. Experiments were based on a theoretical surface energy model proposing enhanced texture of the oxide at the Ag interface after melt-processing. Two classes of samples were processed and compared. Bi-2212 powder was …
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Critical currents in granular high temperature superconductors
… The Jcs of melt-processed thick films of Bi:2212 on silver substrates were measured as a function of temperature and applied magnetic field, and compared with results obtained from magnetic measurements obtained from a VSM. Attempts were made to fit these results to theory. The results …
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Magnetic properties of graphite and Bi2Sr2CaCu2O8+δ
… the thickness dependence of the magnetic susceptibility of graphite, done in this work, showed that two-dimensional interfaces between the crystalline (Bernal or rhombohedral stacking order) blocks in graphite make a dominant contribution to its diamagnetic susceptibility. Previously proposed …