تقرير
Anomalously large measured thermoelectric power factor in Sr$_{1-x}$La$_x$TiO$_3$ thin films due to SrTiO$_3$ substrate reduction
| العنوان: | Anomalously large measured thermoelectric power factor in Sr$_{1-x}$La$_x$TiO$_3$ thin films due to SrTiO$_3$ substrate reduction |
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| المؤلفون: | Scullin, Matthew L., Yu, Choongho, Huijben, Mark, Mukerjee, Subroto, Seidel, Jan, Zhan, Qian, Moore, Joel, Majumdar, Arun, Ramesh, R. |
| سنة النشر: | 2008 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We report the observation that thermoelectric thin-films of La-doped SrTiO3 grown on SrTiO3 substrates yield anomalously high values of thermopower to give extraordinary values of power factor at 300K. Thin-films of Sr0.98La0.02TiO3, grown via pulsed laser deposition at low temperature and low pressure (450C, 10-7Torr), do not yield similarly high values when grown on other substrates. The thin-film growth induces oxygen reduction in the SrTiO3 crystals, doping the substrate n-type. It is found that the backside resistance of the SrTiO3 substrates is as low (~12ohm/square) as it is on the film-side after film growth. Comment: 12 pages, 3 figures, pdf format |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1063/1.2916690 |
| URL الوصول: | http://arxiv.org/abs/0804.0443 |
| رقم الأكسشن: | edsarx.0804.0443 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1063/1.2916690 |
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