Change search
ReferencesLink to record
Permanent link

Direct link
Electrons, holes, and spin in Nd2-xCexCuO4-delta
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.ORCID iD: 0000-0001-8669-6886
Show others and affiliations
2003 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 67, no 10Article in journal (Refereed) Published
Abstract [en]

The spin nature of the states at the top of the valence band in Nd2CuO4 and Nd1.85Ce0.15CuO4-delta has been investigated with spin polarized resonant photoemission. A clear Zhang-Rice singlet state is observed at the top of the valence band in the undoped compound showing that the parent compound of this electron doped superconductor is similar to the parent compounds of hole doped cuprate superconductors. Upon doping, the stability of the singlet is destroyed and the optimum doped compound Nd1.85Ce0.15CuO4-delta does not display any well-separated singlet state. These results indicate that hole contribution to the superconductivity in this system is not important in contrast to what has previously been suggested on the bases of transport measurements.

Place, publisher, year, edition, pages
2003. Vol. 67, no 10
Keyword [en]
zhang-rice singlets, t-j model, cuprate superconductors, transport-properties, photoemission, state, nd1.85ce0.15cuo4, crystal, cuo
URN: urn:nbn:se:kth:diva-22394DOI: 10.1103/PhysRevB.67.100501ISI: 000182033700016OAI: diva2:341092
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Tjernberg, Oscar
By organisation
Microelectronics and Information Technology, IMIT
In the same journal
Physical Review B. Condensed Matter and Materials Physics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 18 hits
ReferencesLink to record
Permanent link

Direct link