تقرير
Theory for Tunnel Magnetoresistance Oscillation
العنوان: | Theory for Tunnel Magnetoresistance Oscillation |
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المؤلفون: | Masuda, Keisuke, Scheike, Thomas, Sukegawa, Hiroaki, Kozuka, Yusuke, Mitani, Seiji, Miura, Yoshio |
سنة النشر: | 2024 |
المجموعة: | Condensed Matter |
مصطلحات موضوعية: | Condensed Matter - Materials Science |
الوصف: | The universal oscillation of the tunnel magnetoresistance (TMR) ratio as a function of the insulating barrier thickness in crystalline magnetic tunnel junctions (MTJs) is a long-standing unsolved problem in condensed matter physics. To explain this, we here introduce a superposition of wave functions with opposite spins and different Fermi momenta, based on the fact that spin-flip scattering near the interface provides a hybridization between majority- and minority-spin states. In a typical Fe/MgO/Fe MTJ, we solve the tunneling problem and show that the TMR ratio oscillates with a period of $\sim3\,$\r{A} by varying the MgO thickness, consistent with previous and present experimental observations. Comment: 6 pages,4 figures |
نوع الوثيقة: | Working Paper |
URL الوصول: | http://arxiv.org/abs/2406.07919 |
رقم الأكسشن: | edsarx.2406.07919 |
قاعدة البيانات: | arXiv |
الوصف غير متاح. |