Antiferro'-Lantern

Kang, Kisung

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https://hdl.handle.net/2142/109761 Copy

Description

Title

Antiferro'-Lantern

Author(s)

Kang, Kisung

Contributor(s)

• Schleife, André
• Cahill, David

Issue Date

2021

Keyword(s)

• Antiferromagnet
• Magnetic Configuration

Abstract

When we shine the light on magnets, what would happen? Ordinary magnets have north and south poles. One of the unique magnets, antiferromagnet, has these poles on each atom alternatively inside materials (red and blue arrows in a figure). Under external stimulation, such as a strong magnetic field, light's polarization is changed by a magneto-optical effect, and we can detect this change! Then, how can we exploit this phenomenon? In a computer, we can store binary information using this magnetic configuration (North and south poles are called spins). It means that up and down spins correspond to zero and one for computer's language. Thus, by tuning the configuration, we can save the information. In the future, stored data in antiferromagnets might read by the light, the fastest source. Jack-o'-Lantern in the figure shows how it works. Alternatively lost teeth represent antiferromagnets, and two shining star-shaped eyes display incident and reflected lights with polarization. All my researches are done by supercomputer simulation. Based on the physics laws and principles, I could create materials through the computer. Then, I store calculated results in a magnetic storage device. Simulate magnets and keep them in magnets. Is it creepy? Trick or Treat!

Type of Resource

Image

Language

eng

Permalink

http://hdl.handle.net/2142/109761

Sponsor(s)/Grant Number(s)

The Illinois Materials Research Science and Engineering Center is supported by the National Science Foundation MRSEC program under NSF Award Number DMR-1720633.

Copyright and License Information

Copyright 2021 Kisung Kang

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