The resistivity of antimony-doped germanium as a function of 1/T for several
impurity concentrations. [From H. J. Fritzche, <i>J. Phys. Chem. Solids</i> <b>6</b>, 69 (1958),
modified from Figure 28.2 in N. W. Ashcroft and N. D. Mermin, <i>Solid State Physics</i>,
Holt, Rinehart, and Winston (1976).]
<p>
<center>
<table>
<tr>
<td valign=top>
<img src="ashcroft.gif" width=450 height=843 alt="resistivity of antimony-doped germanium" border=0>
</td>
<td valign=top align=right>
Specimen<br>
&nbsp;<br>
&nbsp;<sup>&nbsp;</sup><br>
1<br>
2<br>
5<br>
7<br>
8<br>
10<br>
12<br>
15<br>
17<br>
18<br>
20<br>
21<br>
22<br>
23<br>
24<br>
25<br>
26<br>
27<br>
29<br>
</td>
<td valign=top align=center>
Donor<br>
concentration<br>
x 10<sup>14</sup> cm<sup>-3</sup><br>
5.3<br>
9.3<br>
16<br>
23<br>
30<br>
52<br>
85<br>
130<br>
240<br>
350<br>
450<br>
550<br>
640<br>
740<br>
840<br>
1200<br>
1300<br>
2700<br>
9500<br>
</td>
</tr>
</table>
</center>