Frustrated magnets - Hall Effect clues to their discontent

sciencecodex.com ^

[BenLurkin]

An experiment conducted has revealed an unlikely behavior in a class of materials called frustrated magnets, addressing a long-debated question about the nature of these discontented quantum materials.

The researchers tested the frustrated magnets -- so-named because they should be magnetic at low temperatures but aren't -- to see if they exhibit a behavior called the Hall Effect. When a magnetic field is applied to an electric current flowing in a conductor such as a copper ribbon, the current deflects to one side of the ribbon. This deflection, first observed in 1879 by E.H. Hall, is used today in sensors for devices such as computer printers and automobile anti-lock braking systems.

Because the Hall Effect happens in charge-carrying particles, most physicists thought it would be impossible to see such behavior in non-charged, or neutral, particles like those in frustrated magnets. "To talk about the Hall Effect for neutral particles is an oxymoron, a crazy idea," said N. Phuan Ong, Princeton's Eugene Higgins Professor of Physics.

[doc1019]

.

[cripplecreek]

"To talk about the Hall Effect for neutral particles is an oxymoron, a crazy idea,"

Indeed. He read my mind.

[BenLurkin]

"This work sets the stage for hunting the spinon," Ong said. "We have seen its tracks, so to speak."

All I know about the Hall effect -- is that nothing works better to stop a cough.

[SunkenCiv]

Thanks BenLurkin.

---

· String Theory Ping List ·

---

---

· Join · Bookmark · Topics · Google ·
· View or Post in 'blog · post a topic · subscribe ·

---

[JRandomFreeper]

So, what to do with all these monopoles?

/johnny

[RedMDer]

Support Free Republic
If just 5% of our daily readers and participants would donate $10 or $20 today,
this FReepathon would be over by tomorrow.

If you love using FR and think it's a worthwhile endeavor,
please click the donate link today and help us keep it going strong.
Thank you very much.
God bless.

[cripplecreek]

I was told that I would go blind if I played with mine.

[TontoKowalski]

I was told that I would go blind if I played with mine.

Me, too. Thankfully, that was a lie. At least so far.

[cripplecreek]

I’m only blind in my right eye. Fortunately I’m too uncoordinated with my left hand to try.

[JRandomFreeper]

Hang on... I've got to find my glasses.

/johnny

[I want the USA back]

“should be magnetic but aren’t “
Completely backwards. Should be “scientists are re examining their theories which are not adequate to completely describe the behavior of these materials at that temperature”

[Lake Living]

“Mr. Fredrickson, I found the spinon!”
“Oh, that’s great, Kevin! Just leave it on the porch.”

[left that other site]

At first i thought it said “Frustrated Maggots” and it was an article about Moochelle’s school lunch program.

Sure, the garbage cans are full, but even the maggots don’t want to eat that stuff.

[Nuc 1.1]

Now that is funny.

[left that other site]

Why thank you, FRiend! I love String Theory Threads!

:-)

[MountainDad]

The hall effect is used in many sensors used in our engines. Gasoline or diesel. ...

[The Antiyuppie]

“The hall effect is used in many sensors used in our engines. Gasoline or diesel. ...”

And they work really well, too - until they don’t! The effect is very small, and requires an electronic amplifier, which usually drops dead after several years of exposure to heat (from the engine or in anti-lock brakes).

Back in the day, really, really good computer keyboards used hall-effect switches - completely immune to dirt and dust,inherently bounce-free and would last “forever”. In the race to the bottom, these aren’t made anymore.

[palmerizedCaddis]

They aren't made today but I still have one of those things working on a SWTPC 6809 computer I built to replace an Altair that I built while I was stationed in a much in the recent news southwest Asian locale. The old computer still encrypts things better than any modern one I have. Zibegniev Brezinski recalled us about a year before the American media began describing the Ayatollah Khomeini as a benign old holy man. The Jimmah Carter loving illegitimate drummed us out of the US Army. Foia the reports sent to the morons from Tehran. The keyboard was manufactured by an American company Microswitch, a part of Honeywell. Caddis the most elder

[dsc]

Love your tag line; can’t remember where it’s from.