Reduction of low-frequency 1/f noise in Al–AlOx–Al tunnel junctions by thermal annealing
نویسندگان
چکیده
منابع مشابه
Low-frequency magnetic and resistance noise in magnetic tunnel junctions
We have studied the voltage fluctuations of current-biased, micron-scale magnetic tunnel junctions. We find that the spectral power density is 1/f -like at low frequencies and becomes frequency independent at high frequencies. The frequency-independent background noise is due to Johnson-Nyquist noise and shot noise mechanisms. The nature of the 1/f noise has its origin in two different mechanis...
متن کاملLow-frequency magnetic noise in micron-scale magnetic tunnel junctions.
We have observed low-frequency noise due to quasiequilibrium thermal magnetization fluctuations in micron-scale magnetic tunnel junctions (MTJs). This strongly field-dependent magnetic noise occurs within the magnetic hysteresis loops, either as 1/f or Lorentzian (random telegraph) noise. We attribute it to the thermally excited hopping of magnetic domain walls between pinning sites. Our result...
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15 صفحه اولLow frequency noise in Co/Al2O3〈δ(Fe)〉/Ni80Fe20 magnetic tunnel junctions
Abstract The time dependences, up to 200 s, and the noise power spectrum (0.005–10 Hz) in the electron transport response at bias up to 300 mV of Co/Al2O3/Ni80Fe20 magnetic tunnel junctions (MTJs) and of Co/Al2O3〈δ(Fe)〉/Ni80Fe20 (with Fe δ dopants of thickness 1.8 Å inside the barrier) were investigated. The magnetic field was changed between +100 and −100 G in steps of 1 G. The measurements we...
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2010
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.3500823