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Fri Dec 21, 2012, 05:02 AM

MIT discovers a new state of matter, a new kind of magnetism

Researchers at MIT have discovered a new state of matter with a new kind of magnetism. This new state, called a quantum spin liquid (QSL), could lead to significant advances in data storage. QSLs also exhibit a quantum phenomenon called long-range entanglement, which could lead to new types of communications systems, and more.

Generally, when we talk about magnetismís role in the realm of technology, there are just two types: Ferromagnetism and antiferromagnetism. Ferromagnetism has been known about for centuries, and is the underlying force behind your compassís spinning needle or the permanent bar magnets you played with at school. In ferromagnets, the spin (i.e. charge) of every electron is aligned in the same direction, causing two distinct poles. In antiferromagnets, neighboring electrons point in the opposite direction, causing the object to have zero net magnetism (pictured below). In combination with ferromagnets, antiferromagnets are used to create spin valves: the magnetic sensors used in hard drive heads.

http://www.extremetech.com/extreme/143782-mit-discovers-a-new-state-of-matter-a-new-kind-of-magnetism

13 replies, 1921 views

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Reply MIT discovers a new state of matter, a new kind of magnetism (Original post)
Ichingcarpenter Dec 2012 OP
TDale313 Dec 2012 #1
aquart Dec 2012 #2
JHB Dec 2012 #5
Duer 157099 Dec 2012 #12
cojoel Dec 2012 #13
DippyDem Dec 2012 #3
progressoid Dec 2012 #4
dixiegrrrrl Dec 2012 #6
Ichingcarpenter Dec 2012 #8
muriel_volestrangler Dec 2012 #9
Alexa100 Dec 2012 #7
Ligyron Dec 2012 #10
Orrex Dec 2012 #11

Response to Ichingcarpenter (Original post)

Fri Dec 21, 2012, 05:07 AM

1. Very cool. Thanks for the link. n/t

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Response to Ichingcarpenter (Original post)

Fri Dec 21, 2012, 06:06 AM

2. "the researchers spent 10 months growing a tiny sliver of herbertsmithite"

HERBERTSMITHITE!

Is there also a WALTERMITTYITE?

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Response to aquart (Reply #2)

Fri Dec 21, 2012, 06:43 AM

5. One could imagine so.

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Response to aquart (Reply #2)

Fri Dec 21, 2012, 10:13 AM

12. I don't know about waltermittyite

but I wouldn't be opposed to a walterwhiteite

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Response to aquart (Reply #2)

Fri Dec 21, 2012, 10:37 AM

13. More info on wikipedia

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Response to Ichingcarpenter (Original post)

Fri Dec 21, 2012, 06:34 AM

3. Hoverboards coming soon! n/t

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Response to Ichingcarpenter (Original post)

Fri Dec 21, 2012, 06:39 AM

4. Article makes an error. There are more than just two types of magnetism.

Diamagnetism, Paramagnetism, Ferromagnetism, Antiferromagnetism and Ferrimagnetism

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Response to progressoid (Reply #4)

Fri Dec 21, 2012, 06:46 AM

6. My brain hurts now.

Where does "animal magnetism" come into play here?

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Response to dixiegrrrrl (Reply #6)

Fri Dec 21, 2012, 06:50 AM

8. It part of quantum entanglement

Sometimes, two particles will act together and become an entangled system. They behave like one object, but remain two separate objects. It is as if they now sit on the same teeter-totter seesaw. No matter how long the seesaw is, even if it is a billion miles long, if one end is down the other end must be up, and this happens instantly. This happens faster than light can travel from one particle to the other.

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Response to progressoid (Reply #4)

Fri Dec 21, 2012, 06:55 AM

9. Also "the spin (i.e. charge) of every electron"

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Response to Ichingcarpenter (Original post)

Fri Dec 21, 2012, 06:49 AM

7. Interesting

Than you for sharing

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Response to Ichingcarpenter (Original post)

Fri Dec 21, 2012, 07:43 AM

10. Who needs the supernatural

when every discovery brings us closer to reality?

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Response to Ichingcarpenter (Original post)

Fri Dec 21, 2012, 07:51 AM

11. I was prepared to be disappointed

I expectrd that this would be a lame joke-post about Republicans, with some comkentary about the new state of "don't matter" and the magnetism that draws their heads up their asses.

I'm pleased and intrigued what the article is actually about!

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