Asymmetry and quasilinear background of differential conductance characteristics of high-Tc-superconductor/metal tunnel junctions
Miroslav Grajcar, Andrej Plecenik, Paul Seidel, Viktor Vojtanik, Kai-Uwe Barholz
DOI 10.1103/PhysRevB.55.11738 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The inelastic component of differential conductivity of a tunnel junction is studied theoretically in a wide voltage range. A quadratic dependence (∼|V|V) of differential conductivity on bias voltage V was found in addition to the linear one. The sign of the quadratic term depends on both the sign of bias voltage and the ratio of Fermi energy to the parameter of the tunneling barrier strength. This leads to asymmetry of differential characteristics even if the barrier is rectangular. Good agreement was obtained between our theoretical results and experimental data observed on high-Tc-superconductor/metal as well as on Ni-NiO-Pb tunnel junctions.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Ba1-xKxBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Anisotropic normal-state transport properties predicted and analyzed for high-Tc oxide superconductors
similarity 0.98Philip B. Allen et al.
Source status unknown — claims are unverified
Fluctuation conductivity of high-Tc superconductors
similarity 0.97Kazumi Maki & R. S. Thompson
Source status unknown — claims are unverified
Voltage-biased I−V characteristics in the multiple Josephson junction model of high-Tc superconductors
similarity 0.97Shoichi Sakamoto et al.
Source status unknown — claims are unverified
Effect of unitary impurities on non-STM types of tunneling in high-Tc superconductors
similarity 0.97Jian-Xin Zhu et al.
Source status unknown — claims are unverified
Superconducting fluctuation probed by in-plane and out-of-plane conductivities in Tl2Ba2CaCuO8+y single crystals
similarity 0.97Heon-Jung Kim et al.
Source status unknown — claims are unverified
Test of first-principle calculations of charge transfer and electron-hole distribution in oxide superconductors by precise measurements of structure factors
similarity 0.97Lijun Wu et al.
Source status unknown — claims are unverified