Anomalous diamagnetic transitions in Ba2Cu3O4Cl2 and Sr2Cu3O4Cl2 antiferromagnets
| Autor: | K. S. Rabinovich, A. G. Shneider, A. S. Zhuravleva, L. L. Samoilenko |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Superconductivity
Materials science Physics and Astronomy (miscellaneous) Condensed matter physics Solid-state physics media_common.quotation_subject Frustration chemistry.chemical_element Copper Atomic orbital chemistry Condensed Matter::Superconductivity Phase (matter) Diamagnetism Antiferromagnetism media_common |
| Zdroj: | JETP Letters. 98:813-815 |
| ISSN: | 1090-6487 0021-3640 |
| DOI: | 10.1134/s0021364013250206 |
| Popis: | The magnetic properties of Ba2Cu3O4Cl2 and Sr2Cu3O4Cl2 oxychlorides have been studied. A spontaneous manifestation of diamagnetism has been found at quasi-zero and low fields. The temperature of these transitions coincides with the temperature of the antiferromagnetic ordering in Ba2Cu3O4Cl2 (T NI ≈ 337 K) and Sr2Cu3O4Cl2 (T NI ≈ 386 K). The recorded diamagnetic signal is −10−4 emu. It is comparable with the percentage of the superconducting phase in the sample. It is supposed that the arising superconductivity is due to the formation of the superconducting clusters with the direct overlap of the copper d orbitals owing to the frustration processes. |
| Databáze: | OpenAIRE |
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