The challenge, however, is extracting the spins to form a spin-polarized current and injecting them into a circuit without the polarization degrading along the way.

唯一的挑战是，如何提取自旋来形成一个自旋极化的电流，然后注入到电路中并保持极化在沿途不发生退化。

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Grandis makes a non-NAND flash solid state storage technology called spin-transfer torque RAM (STT-RAM) that stores information via the direction of magnetization in a spin-polarized electron current.

FORBES: The Enormous Flash: New Opportunities and Announcements for Solid State Storage