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Re: HOLES AS CARRIERS Negative mass?



----- Original Message -----
From: "Chuck Britton" <britton@NCSSM.EDU>
To: <PHYS-L@lists.nau.edu>
Sent: Wednesday, October 10, 2001 1:26 PM
Subject: Re: HOLES AS CARRIERS Negative mass?


At 1:15 PM -0400 on 10/10/01, Bob Sciamanda wrote
> I haven't (and perhaps CAN'T) work through the Hall Effect in the
'Correct Way' to see that holes are 'just' the absence of an
electron).
Chuck Britton

Consider a magnetic field into the page. Now introduce both electrons
moving to the right and positive carriers moving to the left. Both
constitute a current to the left. The qVxB force will force both
carrier
types down the page. The Hall voltage developed depends on WHICH
CARRIER
TYPE IS FREE TO MOVE in response to that force.

yes, this is the way I have always viewed the Hall Effect and this is
why I have thought that the hole motion to the right is NOT
equivalent to the electron motion to the left.

Can't we measure a POSITIVE voltage at the bottom of the page in
p-type materials?

YES


Doesn't this imply that holes are NOT the same as electrons going the
opposite direction?

The above is a difference!


Is the 'Denker Explanation' for the correct Hall analysis saying
anything different than these results?


I'm not sure what John is saying here.

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Chuck Britton Education is what is
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(919) 286-3366 x224 Albert Einstein,
1936

Bob Sciamanda
Physics, Edinboro Univ of PA (em)
trebor@velocity.net
http://www.velocity.net/~trebor