Two components for one resistivity in LaVO3/SrTiO3 heterostructures
作者： H Rotella , O Copie , A Pautrat , P Boullay , A David
DOI: 10.1088/0953-8984/27/9/095603
关键词: Thin film 、 Substrate (electronics) 、 Condensed matter physics 、 Electrical resistivity and conductivity 、 Heterojunction 、 Diffusion 、 Absorption (electromagnetic radiation) 、 Materials science 、 Pulsed laser deposition 、 Hall effect
摘要: A series of 100 nm LaVO3 thin films have been synthesized on (001)-oriented SrTiO3 substrates using the pulsed laser deposition technique, and effects growth temperature are analyzed. Transport properties reveal a large electronic mobility non-linear Hall effect at low temperature. In addition, cross-over from semiconducting state high-temperature to metallic low-temperature is observed, with clear enhancement character as increases. Optical absorption measurements combined two-bands analysis show that metallicity induced by diffusion oxygen vacancies in substrate. These results allow understand film/substrate heterostructure behaves an original semiconducting-metallic parallel resistor, transport consistently explained.
arxiv.org
sci-hub.se 参考文章(53)
A. Ohtomo, H. Y. Hwang, Growth mode control of the free carrier density in SrTiO3−δ films Journal of Applied Physics. ,vol. 102, pp. 083704- ,(2007) , 10.1063/1.2798385
Wilfrid Prellier, O Copie, H Rotella, P Boullay, M Morales, P Pautrat, P Janolin, I Infante, P Pravathana, U Lüders, P Prellier, Structure and magnetism of epitaxial PrVO3 films Journal of Physics: Condensed Matter. ,vol. 25, pp. 492201- ,(2013) , 10.1088/0953-8984/25/49/492201
A. V. Mahajan, D. C. Johnston, D. R. Torgeson, F. Borsa, Magnetic properties of LaVO3. Physical Review B. ,vol. 46, pp. 10966- 10972 ,(1992) , 10.1103/PHYSREVB.46.10966
L. F. Mattheiss, Energy Bands for KNiF3, SrTiO3, KMoO3, and KTaO3 Physical Review B. ,vol. 6, pp. 4718- 4740 ,(1972) , 10.1103/PHYSREVB.6.4718
F. Kuchar, P. Frankus, Magnetoresistance of cubic and monodomain tetragonaln-type strontium titanate Physical Review B. ,vol. 16, pp. 874- 883 ,(1977) , 10.1103/PHYSREVB.16.874
Y. Hotta, T. Susaki, H. Y. Hwang, Polar Discontinuity Doping of theLaVO3/SrTiO3Interface Physical Review Letters. ,vol. 99, pp. 236805- ,(2007) , 10.1103/PHYSREVLETT.99.236805
M. Basletic, J.-L. Maurice, C. Carrétéro, G. Herranz, O. Copie, M. Bibes, É. Jacquet, K. Bouzehouane, S. Fusil, A. Barthélémy, Mapping the spatial distribution of charge carriers in LaAlO3/SrTiO3 heterostructures Nature Materials. ,vol. 7, pp. 621- 625 ,(2008) , 10.1038/NMAT2223
E. K. Arushanov, G. P. Chuiko, The magnetic field dependence of kinetic coefficients of cadmium arsenide single crystals Physica Status Solidi (a). ,vol. 17, pp. K135- K138 ,(1973) , 10.1002/PSSA.2210170250
M.-H. Jung, I. K. Yang, R. Ramesh, Y. H. Jeong, A. Biswas, P. B. Rossen, C.-H. Yang, W. Siemons, Universal Ti-rich termination of atomically flat SrTiO3 (001), (110), and (111) surfaces Applied Physics Letters. ,vol. 98, pp. 051904- ,(2011) , 10.1063/1.3549860
P. Boullay, A. David, W. C. Sheets, U. Lüders, W. Prellier, H. Tan, J. Verbeeck, G. Van Tendeloo, C. Gatel, G. Vincze, Z. Radi, Microstructure and interface studies of LaVO 3 /SrVO 3 superlattices Physical Review B. ,vol. 83, pp. 125403- ,(2011) , 10.1103/PHYSREVB.83.125403