Giant tunnelling magnetoresistance at room temperature with MgO (100) tunnel barriers

  title={Giant tunnelling magnetoresistance at room temperature with MgO (100) tunnel barriers},
  author={Stuart S. P. Parkin and Christian R. Kaiser and Alex F. Panchula and Philip Milton Rice and Brian Hughes and Mahesh Samant and See-Hun Yang},
  journal={Nature Materials},
Magnetically engineered magnetic tunnel junctions (MTJs) show promise as non-volatile storage cells in high-performance solid-state magnetic random access memories (MRAM)1. The performance of these devices is currently limited by the modest (<∼70%) room-temperature tunnelling magnetoresistance (TMR) of technologically relevant MTJs. Much higher TMR values have been theoretically predicted for perfectly ordered (100) oriented single-crystalline Fe/MgO/Fe MTJs. Here we show that sputter-deposited… 
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