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Magnetic switching fluctuations from sidewall oxides in MgO/FeCoB magnetic tunnel junctions Open

J. M. Pomeroy, J. C. Read · 2011

Materials science Physics

Sharp magnetic switching distributions with coupling to magnetic sidewall oxides in FeCoB/MgO magnetic tunnel junctions (MTJs) are revealed by magneto-resistance first order reversal curve (MR-FORC) measurements. Tunneling magneto-resistan…

Correlating Nanoscale Defects with Electronic Properties in MgO Magnetic Tunnel Junctions by Aberration-Corrected STEM-EELS Open

Pinshane Y. Huang, JJ Cha, J. C. Read, H-W Tseng, Yi Li , et al. · 2010

Materials science Chemistry Physics

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – August 5, 2010.

Disorder, defects and bandgaps in ultra thin (001) MgO tunnel barrier layers Open

P. G. Mather, J. C. Read, R. A. Buhrman · 2006

Materials science Physics

We report scanning tunneling spectroscopy studies of the electronic structure of 1.5 to 3 nm (001) textured MgO layers grown on (001) Fe. Thick MgO layers exhibit a bulk-like band gap, approximately 5-7 eV, and sparse, localized defect sta…

Tunneling spectroscopy studies of treated aluminum oxide tunnel barrier layers Open

P. G. Mather, A. C. Perrella, Eng‐Hao‐Louis Tan, J. C. Read, R. A. Buhrman · 2005

Materials science Chemistry Physics

We report scanning tunneling microscopy and ballistic electron emission microscopy studies of the electronic states of the uncovered and chemisorbed-oxygen covered surface of AlOx tunnel barrier layers. These states change when chemisorbed…

Oxygen stoichiometry and instability in aluminum oxide tunnel barrier layers Open

Eileen Tan, P. G. Mather, A. C. Perrella, J. C. Read, R. A. Buhrman · 2005

Materials science Chemistry Physics

We present X-ray photoelectron spectroscopy data which show that the\nchemisorbed oxygen previously observed to be on the surface of thin AlOx layers\nformed by room temperature thermal oxidation is bound by oxygen vacancies in\nthe oxide.…

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