A Precise Measurement of the Oxygen Isotope Effect on the Néel Temperature in Cuprates
A limiting factor in the ability to interpret isotope effect measurements in cuprates is the absence of sufficiently accurate data for the whole phase diagram; there is precise data for 𝑇𝑐, but not for the antiferromagnetic transition temperature 𝑇𝑁. Extreme sensitivity of 𝑇𝑁 to small changes in the...
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Hindawi Limited
2011-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2011/178190 |
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doaj-71139bfa9e614168a98611ef1a4d07c72020-11-25T00:10:50ZengHindawi LimitedAdvances in Condensed Matter Physics1687-81081687-81242011-01-01201110.1155/2011/178190178190A Precise Measurement of the Oxygen Isotope Effect on the Néel Temperature in CupratesE. Amit0A. Keren1J. S. Lord2P. King3Physics Department, Technion-Israel Institute of Technology, Haifa 32000, IsraelPhysics Department, Technion-Israel Institute of Technology, Haifa 32000, IsraelRutherford Appleton Laboratory, Chilton Didcot, Oxfordshire OX11 0QX, UKRutherford Appleton Laboratory, Chilton Didcot, Oxfordshire OX11 0QX, UKA limiting factor in the ability to interpret isotope effect measurements in cuprates is the absence of sufficiently accurate data for the whole phase diagram; there is precise data for 𝑇𝑐, but not for the antiferromagnetic transition temperature 𝑇𝑁. Extreme sensitivity of 𝑇𝑁 to small changes in the amount of oxygen in the sample is the major problem. This problem is solved here by using the novel compound (Ca0.1La0.9)(Ba1.65La0.35)Cu3O𝑦 for which there is a region where 𝑇𝑁 is independent of oxygen doping. Meticulous measurements of 𝑇𝑁 for samples with 16O and 18O find the absence of an oxygen isotope effect on 𝑇𝑁 with unprecedented accuracy. A possible interpretation of our finding and existing data is that isotope substitution affects the normal state charge carrier density.http://dx.doi.org/10.1155/2011/178190 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
E. Amit A. Keren J. S. Lord P. King |
| spellingShingle |
E. Amit A. Keren J. S. Lord P. King A Precise Measurement of the Oxygen Isotope Effect on the Néel Temperature in Cuprates Advances in Condensed Matter Physics |
| author_facet |
E. Amit A. Keren J. S. Lord P. King |
| author_sort |
E. Amit |
| title |
A Precise Measurement of the Oxygen Isotope Effect on the Néel Temperature in Cuprates |
| title_short |
A Precise Measurement of the Oxygen Isotope Effect on the Néel Temperature in Cuprates |
| title_full |
A Precise Measurement of the Oxygen Isotope Effect on the Néel Temperature in Cuprates |
| title_fullStr |
A Precise Measurement of the Oxygen Isotope Effect on the Néel Temperature in Cuprates |
| title_full_unstemmed |
A Precise Measurement of the Oxygen Isotope Effect on the Néel Temperature in Cuprates |
| title_sort |
precise measurement of the oxygen isotope effect on the néel temperature in cuprates |
| publisher |
Hindawi Limited |
| series |
Advances in Condensed Matter Physics |
| issn |
1687-8108 1687-8124 |
| publishDate |
2011-01-01 |
| description |
A limiting factor in the ability to interpret isotope effect measurements in cuprates is the absence of sufficiently accurate data for the whole phase diagram; there is precise data for 𝑇𝑐, but not for the antiferromagnetic transition temperature 𝑇𝑁. Extreme sensitivity of 𝑇𝑁 to small changes in the
amount of oxygen in the sample is the major problem. This problem is solved here by using the novel compound (Ca0.1La0.9)(Ba1.65La0.35)Cu3O𝑦 for which there is a region where 𝑇𝑁 is independent of oxygen doping. Meticulous measurements of 𝑇𝑁 for samples with 16O and 18O find the absence of an oxygen isotope effect on 𝑇𝑁 with unprecedented accuracy. A possible interpretation of our finding and existing data is that isotope substitution affects the normal state charge carrier density. |
| url |
http://dx.doi.org/10.1155/2011/178190 |
| work_keys_str_mv |
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