Influence of the morphology on the magneto-transport properties of laser-ablated ultrathin La0.7Ba0.3MnO3 films
Das, A. ; Gordon, I. ; Wagner, P. ; Cannaerts, M. ; Moshchalkov, V. V. ; Bruynseraede, Y.
[S.l.] : American Institute of Physics (AIP)
Published 2001
[S.l.] : American Institute of Physics (AIP)
Published 2001
| ISSN: |
1089-7550
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|---|---|
| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
We investigate the thickness dependent properties of manganite films characterized by colossal negative magnetoresistance. Ultrathin, wedge-type films (0–120 Å) of La0.7Ba0.3MnO3 were deposited by laser ablation onto SrTiO3 and LaAlO3 substrates. The films were patterned into strips of different thickness and magneto-transport measurements were performed at temperatures between 5 and 290 K and in magnetic fields up to 5 T. Atomic force- and transmission electron microscopy were done to correlate the microstructure with the transport data. The resistivity of the films increases slightly with decreasing thickness due to substrate-induced compressive strain. Below 50 Å, the resistivity rises abruptly indicating a crossover to discontinuous and finally island-like film growth as confirmed by the microstructural techniques. At thicknesses slightly above the threshold for percolative conduction ((approximate)30 Å), an enhanced low-field magnetoresistance was observed as a signature of spin-dependent tunneling. © 2001 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |
| _version_ | 1798289683770245120 |
|---|---|
| autor | Das, A. Gordon, I. Wagner, P. Cannaerts, M. Moshchalkov, V. V. Bruynseraede, Y. |
| autorsonst | Das, A. Gordon, I. Wagner, P. Cannaerts, M. Moshchalkov, V. V. Bruynseraede, Y. |
| book_url | http://dx.doi.org/10.1063/1.1380217 |
| datenlieferant | nat_lic_papers |
| hauptsatz | hsatz_simple |
| identnr | NLZ21836346X |
| issn | 1089-7550 |
| journal_name | Journal of Applied Physics |
| materialart | 1 |
| notes | We investigate the thickness dependent properties of manganite films characterized by colossal negative magnetoresistance. Ultrathin, wedge-type films (0–120 Å) of La0.7Ba0.3MnO3 were deposited by laser ablation onto SrTiO3 and LaAlO3 substrates. The films were patterned into strips of different thickness and magneto-transport measurements were performed at temperatures between 5 and 290 K and in magnetic fields up to 5 T. Atomic force- and transmission electron microscopy were done to correlate the microstructure with the transport data. The resistivity of the films increases slightly with decreasing thickness due to substrate-induced compressive strain. Below 50 Å, the resistivity rises abruptly indicating a crossover to discontinuous and finally island-like film growth as confirmed by the microstructural techniques. At thicknesses slightly above the threshold for percolative conduction ((approximate)30 Å), an enhanced low-field magnetoresistance was observed as a signature of spin-dependent tunneling. © 2001 American Institute of Physics. |
| package_name | American Institute of Physics (AIP) |
| publikationsjahr_anzeige | 2001 |
| publikationsjahr_facette | 2001 |
| publikationsjahr_intervall | 7999:2000-2004 |
| publikationsjahr_sort | 2001 |
| publikationsort | [S.l.] |
| publisher | American Institute of Physics (AIP) |
| reference | 90 (2001), S. 1429-1435 |
| search_space | articles |
| shingle_author_1 | Das, A. Gordon, I. Wagner, P. Cannaerts, M. Moshchalkov, V. V. Bruynseraede, Y. |
| shingle_author_2 | Das, A. Gordon, I. Wagner, P. Cannaerts, M. Moshchalkov, V. V. Bruynseraede, Y. |
| shingle_author_3 | Das, A. Gordon, I. Wagner, P. Cannaerts, M. Moshchalkov, V. V. Bruynseraede, Y. |
| shingle_author_4 | Das, A. Gordon, I. Wagner, P. Cannaerts, M. Moshchalkov, V. V. Bruynseraede, Y. |
| shingle_catch_all_1 | Das, A. Gordon, I. Wagner, P. Cannaerts, M. Moshchalkov, V. V. Bruynseraede, Y. Influence of the morphology on the magneto-transport properties of laser-ablated ultrathin La0.7Ba0.3MnO3 films We investigate the thickness dependent properties of manganite films characterized by colossal negative magnetoresistance. Ultrathin, wedge-type films (0–120 Å) of La0.7Ba0.3MnO3 were deposited by laser ablation onto SrTiO3 and LaAlO3 substrates. The films were patterned into strips of different thickness and magneto-transport measurements were performed at temperatures between 5 and 290 K and in magnetic fields up to 5 T. Atomic force- and transmission electron microscopy were done to correlate the microstructure with the transport data. The resistivity of the films increases slightly with decreasing thickness due to substrate-induced compressive strain. Below 50 Å, the resistivity rises abruptly indicating a crossover to discontinuous and finally island-like film growth as confirmed by the microstructural techniques. At thicknesses slightly above the threshold for percolative conduction ((approximate)30 Å), an enhanced low-field magnetoresistance was observed as a signature of spin-dependent tunneling. © 2001 American Institute of Physics. 1089-7550 10897550 American Institute of Physics (AIP) |
| shingle_catch_all_2 | Das, A. Gordon, I. Wagner, P. Cannaerts, M. Moshchalkov, V. V. Bruynseraede, Y. Influence of the morphology on the magneto-transport properties of laser-ablated ultrathin La0.7Ba0.3MnO3 films We investigate the thickness dependent properties of manganite films characterized by colossal negative magnetoresistance. Ultrathin, wedge-type films (0–120 Å) of La0.7Ba0.3MnO3 were deposited by laser ablation onto SrTiO3 and LaAlO3 substrates. The films were patterned into strips of different thickness and magneto-transport measurements were performed at temperatures between 5 and 290 K and in magnetic fields up to 5 T. Atomic force- and transmission electron microscopy were done to correlate the microstructure with the transport data. The resistivity of the films increases slightly with decreasing thickness due to substrate-induced compressive strain. Below 50 Å, the resistivity rises abruptly indicating a crossover to discontinuous and finally island-like film growth as confirmed by the microstructural techniques. At thicknesses slightly above the threshold for percolative conduction ((approximate)30 Å), an enhanced low-field magnetoresistance was observed as a signature of spin-dependent tunneling. © 2001 American Institute of Physics. 1089-7550 10897550 American Institute of Physics (AIP) |
| shingle_catch_all_3 | Das, A. Gordon, I. Wagner, P. Cannaerts, M. Moshchalkov, V. V. Bruynseraede, Y. Influence of the morphology on the magneto-transport properties of laser-ablated ultrathin La0.7Ba0.3MnO3 films We investigate the thickness dependent properties of manganite films characterized by colossal negative magnetoresistance. Ultrathin, wedge-type films (0–120 Å) of La0.7Ba0.3MnO3 were deposited by laser ablation onto SrTiO3 and LaAlO3 substrates. The films were patterned into strips of different thickness and magneto-transport measurements were performed at temperatures between 5 and 290 K and in magnetic fields up to 5 T. Atomic force- and transmission electron microscopy were done to correlate the microstructure with the transport data. The resistivity of the films increases slightly with decreasing thickness due to substrate-induced compressive strain. Below 50 Å, the resistivity rises abruptly indicating a crossover to discontinuous and finally island-like film growth as confirmed by the microstructural techniques. At thicknesses slightly above the threshold for percolative conduction ((approximate)30 Å), an enhanced low-field magnetoresistance was observed as a signature of spin-dependent tunneling. © 2001 American Institute of Physics. 1089-7550 10897550 American Institute of Physics (AIP) |
| shingle_catch_all_4 | Das, A. Gordon, I. Wagner, P. Cannaerts, M. Moshchalkov, V. V. Bruynseraede, Y. Influence of the morphology on the magneto-transport properties of laser-ablated ultrathin La0.7Ba0.3MnO3 films We investigate the thickness dependent properties of manganite films characterized by colossal negative magnetoresistance. Ultrathin, wedge-type films (0–120 Å) of La0.7Ba0.3MnO3 were deposited by laser ablation onto SrTiO3 and LaAlO3 substrates. The films were patterned into strips of different thickness and magneto-transport measurements were performed at temperatures between 5 and 290 K and in magnetic fields up to 5 T. Atomic force- and transmission electron microscopy were done to correlate the microstructure with the transport data. The resistivity of the films increases slightly with decreasing thickness due to substrate-induced compressive strain. Below 50 Å, the resistivity rises abruptly indicating a crossover to discontinuous and finally island-like film growth as confirmed by the microstructural techniques. At thicknesses slightly above the threshold for percolative conduction ((approximate)30 Å), an enhanced low-field magnetoresistance was observed as a signature of spin-dependent tunneling. © 2001 American Institute of Physics. 1089-7550 10897550 American Institute of Physics (AIP) |
| shingle_title_1 | Influence of the morphology on the magneto-transport properties of laser-ablated ultrathin La0.7Ba0.3MnO3 films |
| shingle_title_2 | Influence of the morphology on the magneto-transport properties of laser-ablated ultrathin La0.7Ba0.3MnO3 films |
| shingle_title_3 | Influence of the morphology on the magneto-transport properties of laser-ablated ultrathin La0.7Ba0.3MnO3 films |
| shingle_title_4 | Influence of the morphology on the magneto-transport properties of laser-ablated ultrathin La0.7Ba0.3MnO3 films |
| sigel_instance_filter | dkfz geomar wilbert ipn albert |
| source_archive | AIP Digital Archive |
| timestamp | 2024-05-06T08:04:44.302Z |
| titel | Influence of the morphology on the magneto-transport properties of laser-ablated ultrathin La0.7Ba0.3MnO3 films |
| titel_suche | Influence of the morphology on the magneto-transport properties of laser-ablated ultrathin La0.7Ba0.3MnO3 films |
| topic | U |
| uid | nat_lic_papers_NLZ21836346X |