“Miracle” Filter Turns Store-Bought LEDs Into Spintronic Devices

The chiral spin filter, crafted from hybrid organic-inorganic halide perovskite material, allowed conventional LEDs to manipulate the spin orientation of electrons at room temperature without requiring ferromagnets or a magnetic field, overcoming a major barrier to commercial spintronics.

Recent advancements in spintronics have led to the development of modified LEDs that control electron spin without ferromagnets or magnetic fields, using a new spin filter made from chiral hybrid organic-inorganic halide perovskites. This technology, which allows for more efficient data processing by assigning binary values to electron spin states, marks a significant leap forward in integrating spintronics with existing semiconductor technologies.

Traditional electronics use semiconductors to transmit data by utilizing bursts of charged carriers (electrons or holes) to represent messages in the form of “1s” and “0s.” In contrast, spintronic devices can handle significantly more information by assigning binary code based on the orientation of electrons’ magnetic poles, a property known as spin. An “up” spin represents a 1, while a “down” spin represents a 0.