GREPhysics.NET: GR9677 #95

GR9677 #95

Problem

GREPhysics.NET Official Solution

This problem is still being typed.

Advanced Topics $\Rightarrow$ }Solid State Physics

The specific heat of a superconductor jumps at the critical temperature (c.f. with its resistivity jump).

Ordinarily, the specific heat of a metal is $c=aT+bT^3$ . When it is superconducting, the first term, the electronic-contribution, is replaced by $\approx e^{-cT}$ . The revised plot of the specific heat has a jump from an exponentially increasing specific heat to a much lower value somewhere in the range for positive T.

Reference: Ibach and Luth p 270ff

Alternate Solutions

There are no Alternate Solutions for this problem. Be the first to post one!

Comments

lathena
2009-10-04 15:46:48

So then the answer is (E), correct?

cathaychris
2011-10-14 01:24:50

Yes.

Reply to this comment

sharpstones
2007-04-06 15:01:10

It's good to know that a phase transition is characterized by a discontinuous jump in a physical quantity. The switchover from normal metal to superconducting state is a phase transition and is characterized by a discontinuous jump in the Heat Capacity.

kammyuce
2011-11-08 13:20:57

yes. to add more to it...1st order phase transitions has their physical quantities (order parameter and dependent quantities) following a discontinuous or kinked curve.
There are alo 2nd order transitions which have a smooth variation. Nonetheless, superconductivity (Type I) is a 1st order transtition.

Reply to this comment

Post A Comment!

You are replying to:

Bare Basic LaTeX Rosetta Stone
LaTeX syntax supported through dollar sign wrappers $, ex., $\alpha^2_0$ produces $\alpha^2_0$ .
type this...	to get...
$\int_0^\infty$	$\int_0^\infty$
$\partial$	$\partial$
$\Rightarrow$	$\Rightarrow$
$\ddot{x},\dot{x}$	$\ddot{x},\dot{x}$
$\sqrt{z}$	$\sqrt{z}$
$\langle my \rangle$	$\langle my \rangle$
$\left( abacadabra \right)_{me}$	$\left( abacadabra \right)_{me}$
$\vec{E}$	$\vec{E}$
$\frac{a}{b}$	$\frac{a}{b}$

The Sidebar Chatbox...
Scroll to see it, or resize your browser to ignore it...

All-Solutions List | Latest Comments | Unanswered Questions (Cries for Help!) |::| About

This site is not affiliated with ETS, nor is it officially endorsed (yet) by ETS. This site is the work of an individual named Yosun Chang. The solutions, sans user comments and ETS questions, are © 2005 by Yosun Chang except where noted. All rights reserved. / The comments appending particular solutions are due to the respective users. / Educational Testing Service, ETS, the ETS logo, Graduate Record Examinations, and GRE are registered trademarks of Educational Testing Service. The examination questions are © 1997 and © 2001 by ETS.

Bare Basic LaTeX Rosetta Stone