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LocalOδprobing in the high-TcsuperconductorHgBa2CuO4+δ
- Source :
- Physical Review B. 61:11769-11775
- Publication Year :
- 2000
- Publisher :
- American Physical Society (APS), 2000.
-
Abstract
- Electric-field gradients on mercury sites of the ${\mathrm{HgBa}}_{2}{\mathrm{CuO}}_{4+\ensuremath{\delta}}$ high-${T}_{c}$ superconductor were measured with the perturbed angular correlation technique and interpreted with ab initio calculations. Under oxygen annealing, an asymmetric electric-field gradient has been assigned to the presence of single oxygen atoms, ${\mathrm{O}}_{\ensuremath{\delta}},$ which are located in the Hg planes. These experiments provide an atomic scale tool for studying charge-density variations occuring in the neighborhood of the Hg atoms, which can be induced, particularly, by pointlike defects.
Details
- ISSN :
- 10953795 and 01631829
- Volume :
- 61
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi...........81724e0976e2be600d4af6474500f878