Szczegóły publikacji
Opis bibliograficzny
Distribution of electrons and holes in cuprate superconductors as determined from $^{17}O$ and $^{63}Cu$ nuclear magnetic resonance / Michael Jurkutat, Damian RYBICKI, Oleg P. Sushkov, Grant V. M. Williams, Andreas Erb, Jürgen Haase // Physical Review. B, Condensed Matter and Materials Physics ; ISSN 1098-0121. — Tytuł poprz.: Physical Review B : Condensed Matter. — 2014 — vol. 90 iss. 14, s. 140504-1–140504-5. — Bibliogr. s. 140504-4–140504-5. — Damian Rybicki – dod. afiliacja: University of Leipzig
Autorzy (6)
- Jurkutat Michael
- AGHRybicki Damian
- Sushkov Oleg P.
- Williams Grant V. M.
- Erb Andreas
- Haase Jürgen
Dane bibliometryczne
| ID BaDAP | 87739 |
|---|---|
| Data dodania do BaDAP | 2015-02-12 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.90.140504 |
| Rok publikacji | 2014 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, B |
Abstract
The local distribution of electrons and holes in the CuO2 plane of the high-temperature superconducting cuprates is determined with nuclear magnetic resonance through the quadrupole splittings of O-17 and Cu-63. Based on new data for single crystals of electron-doped Pr2-x Ce-x CuO4 (x = 0, 0.05, 0.10, 0.15) as well as Nd2-x Ce-x CuO4 (x = 0, 0.13) the changes in hole contents n(d) of Cu 3d(x2-y2) and n(p) of O 2p(sigma) orbitals are determined and these account for the stoichiometrically doped charges, similar to hole-doped La2-x Sr-x CuO4. It emerges that while n(d) + 2n(p) = 1 in all parent materials as expected, n(d) and n(p) vary substantially between different groups of materials. Doping holes increases predominantly n(p), but also n(d). To the contrary, doping electrons predominantly decreases nd and only slightly n(p). However, n(p) for the electron-doped systems is higher than that in hole-doped La1.85Sr0.15CuO4. Cuprates with the highest maximum T-c's appear to have a comparatively low nd and high np. The rather high oxygen hole content of the Pr2CuO4 and Nd2CuO4 with the low nd seems to make them ideal candidates for hole doping to obtain a potentially high T-c.
