Test of first-principle calculations of charge transfer and electron-hole distribution in oxide superconductors by precise measurements of structure factors

Lijun Wu; Yimei Zhu; J. Tafto

doi:10.1103/PhysRevB.59.6035

← Back to search

Test of first-principle calculations of charge transfer and electron-hole distribution in oxide superconductors by precise measurements of structure factors

Lijun Wu, Yimei Zhu, J. Tafto

DOI 10.1103/PhysRevB.59.6035 · Physical Review B

T1

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

We use an approach in electron diffraction, based on quantitative analysis of diffraction intensity of many reflections as a function of sample thickness, to determine Fourier components of the electron distribution in crystals. For short reciprocal vectors our measured accuracy of the Fourier components is, to our knowledge, far beyond previous achievements. This technique is used to study charge transfer and electron-hole distributions in the high-temperature superconductors Bi2Sr2CaCu2O8+δ and YBa2Cu3O7. Our experimental results agree well with electronic structure calculations.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
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