A theoretical study of an amorphous aluminium oxide layer used as a tunnel barrier in a magnetic tunnel junction Export

@article{aluoxy_surfaceelectronics_pss07, abstract = {An amorphous aluminium oxide layer is assumed to be a condensed gas phase composed of (AlOx)N molecules. The total energy and the electron affinity of (AlOx)N molecules is calculated by using a DFT program. The effective tunnel barrier height in the MTJ is presumed from a difference between the work function of the ferromagnetic metal and the electron affinity of (AlOx)N molecules. By using a quantum-mechanical free electron model the TMR and the R×A product are calculated as a function of the thickness of an amorphous aluminium oxide layer in the F/I/F tunnel junction. It is inferred that the tunnel barrier width determined by subtracting 6 \r{A} from the thickness of an amorphous aluminium oxide layer is more suitable to explain an experimental report qualitatively than the tunnel barrier width equivalent to the thickness of an amorphous aluminium oxide layer. ({\copyright} 2007 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim)}, address = {Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Guseong-Dong 373-1, Yuseong-Gu, Daejeon 305-701, Republic of Korea; Department of Physics and Astronomy, Clippinger Laboratory 368B, Ohio University, Athens, OH 45701, USA}, author = {Noh, E. S. and Ulloa, S. E. and Lee, H. M.}, citeulike-article-id = {5032353}, citeulike-linkout-0 = {http://dx.doi.org/10.1002/pssb.200777404}, citeulike-linkout-1 = {http://www3.interscience.wiley.com/cgi-bin/abstract/117865270/ABSTRACT}, doi = {10.1002/pssb.200777404}, journal = {physica status solidi (b)}, keywords = {aluoxy\_surfaceelectronics\_pss07}, number = {12}, pages = {4427--4430}, posted-at = {2009-07-01 14:01:49}, priority = {2}, title = {A theoretical study of an amorphous aluminium oxide layer used as a tunnel barrier in a magnetic tunnel junction}, url = {http://dx.doi.org/10.1002/pssb.200777404}, volume = {244}, year = {2007} }

TY - JOUR ID - aluoxy_surfaceelectronics_pss07 L3 - citeulike-article-id:5032353 N2 - An amorphous aluminium oxide layer is assumed to be a condensed gas phase composed of (AlOx)N molecules. The total energy and the electron affinity of (AlOx)N molecules is calculated by using a DFT program. The effective tunnel barrier height in the MTJ is presumed from a difference between the work function of the ferromagnetic metal and the electron affinity of (AlOx)N molecules. By using a quantum-mechanical free electron model the TMR and the R×A product are calculated as a function of the thickness of an amorphous aluminium oxide layer in the F/I/F tunnel junction. It is inferred that the tunnel barrier width determined by subtracting 6 Å from the thickness of an amorphous aluminium oxide layer is more suitable to explain an experimental report qualitatively than the tunnel barrier width equivalent to the thickness of an amorphous aluminium oxide layer. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) IS - 12 JF - physica status solidi (b) AD - Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Guseong-Dong 373-1, Yuseong-Gu, Daejeon 305-701, Republic of Korea; Department of Physics and Astronomy, Clippinger Laboratory 368B, Ohio University, Athens, OH 45701, USA EP - 4430 TI - A theoretical study of an amorphous aluminium oxide layer used as a tunnel barrier in a magnetic tunnel junction VL - 244 SP - 4427 KW - aluoxy_surfaceelectronics_pss07 AU - Noh, ES AU - Ulloa, SE AU - Lee, HM PY - 2007/// UR - http://dx.doi.org/10.1002/pssb.200777404 ER -