Towards weakening of the Coulomb blockade in artificially prepared clusters of superconducting grains
The relative role of dipole-dipole interactions between induced polarization moments in the total charge balance of a model system of two clusters (each cluster contains N superconducting grains) is analyzed. It is found that, due to its orientational nature, the dipole energy between clusters may o...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2011-06-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.3596380 |
| _version_ | 1811204566853615616 |
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| author | Sergei Sergeenkov |
| author_facet | Sergei Sergeenkov |
| author_sort | Sergei Sergeenkov |
| collection | DOAJ |
| description | The relative role of dipole-dipole interactions between induced polarization moments in the total charge balance of a model system of two clusters (each cluster contains N superconducting grains) is analyzed. It is found that, due to its orientational nature, the dipole energy between clusters may overcome the direct Coulomb coupling between grains (within a single cluster). To verify the model predictions experimentally, specially prepared clusters with markedly distinctive grain-grain (εc) and cluster-cluster (εd) dielectric properties are needed. More specifically, clusters of Al-based superconducting grains embedded into SrTiO3 dielectric matrix (with εc ≃ 104) and separated by a dielectric layer of Al2O3 (with εd ≃ 10) would result in a noticeable decrease of the total charging energy of the system. |
| first_indexed | 2024-04-12T03:15:20Z |
| format | Article |
| id | doaj.art-534383be9a1a4c06830fdb3cfbd67e54 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-12T03:15:20Z |
| publishDate | 2011-06-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-534383be9a1a4c06830fdb3cfbd67e542022-12-22T03:50:10ZengAIP Publishing LLCAIP Advances2158-32262011-06-0112022122022122-310.1063/1.3596380022102ADVTowards weakening of the Coulomb blockade in artificially prepared clusters of superconducting grainsSergei Sergeenkov0Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna 141980, Moscow Region, RussiaThe relative role of dipole-dipole interactions between induced polarization moments in the total charge balance of a model system of two clusters (each cluster contains N superconducting grains) is analyzed. It is found that, due to its orientational nature, the dipole energy between clusters may overcome the direct Coulomb coupling between grains (within a single cluster). To verify the model predictions experimentally, specially prepared clusters with markedly distinctive grain-grain (εc) and cluster-cluster (εd) dielectric properties are needed. More specifically, clusters of Al-based superconducting grains embedded into SrTiO3 dielectric matrix (with εc ≃ 104) and separated by a dielectric layer of Al2O3 (with εd ≃ 10) would result in a noticeable decrease of the total charging energy of the system.http://dx.doi.org/10.1063/1.3596380 |
| spellingShingle | Sergei Sergeenkov Towards weakening of the Coulomb blockade in artificially prepared clusters of superconducting grains AIP Advances |
| title | Towards weakening of the Coulomb blockade in artificially prepared clusters of superconducting grains |
| title_full | Towards weakening of the Coulomb blockade in artificially prepared clusters of superconducting grains |
| title_fullStr | Towards weakening of the Coulomb blockade in artificially prepared clusters of superconducting grains |
| title_full_unstemmed | Towards weakening of the Coulomb blockade in artificially prepared clusters of superconducting grains |
| title_short | Towards weakening of the Coulomb blockade in artificially prepared clusters of superconducting grains |
| title_sort | towards weakening of the coulomb blockade in artificially prepared clusters of superconducting grains |
| url | http://dx.doi.org/10.1063/1.3596380 |
| work_keys_str_mv | AT sergeisergeenkov towardsweakeningofthecoulombblockadeinartificiallypreparedclustersofsuperconductinggrains |