changes to basics chapter

[lectures/latex.git] / solid_state_physics / tutorial / 2_01s.tex

diff --git a/solid_state_physics/tutorial/2_01s.tex b/solid_state_physics/tutorial/2_01s.tex
index 22abb78af12bee66fb6baec09b2bbaf333f17f3a..033c8ae2702dfe6cab0e232e27b839759de98d33 100644 (file)
--- a/solid_state_physics/tutorial/2_01s.tex
+++ b/solid_state_physics/tutorial/2_01s.tex
@@ -62,7 +62,7 @@
         \item $I = (\textrm{charge}) \cdot (\textrm{loops per time})
               \stackrel{1/T=\omega_L/2\pi}{=}
               (Ze)(\frac{1}{2\pi}\frac{-e}{2m}B)$\\
-             $\mu=IA=I2\pi<\rho^2>=-\frac{Ze^2B}{4m}<\rho^2>$\\
+             $\mu=IA=I\pi<\rho^2>=-\frac{Ze^2B}{4m}<\rho^2>$\\
              $<x^2>=<y^2>=<z^2> \Rightarrow <r^2>=3<x^2>=3<y^2>$\\
              $<\rho^2>=<x^2>+<y^2>=\frac{2}{3}<r^2>$\\
              $\mu=-\frac{Ze^2B}{6m}$