Band inversion and transport properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>L</mml:mi></mml:math>minima in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>n</mml:mi><mml:mo>−</mml:mo><mml:mi mathvariant="normal">GaSb</mml:mi><mml:mo>(</mml:mo><mml:mi mathvariant="normal">Te</mml:mi><mml:mo>)</mml:mo></mml:math>

Electrical transport measurements have been made on tellurium-doped $n$-type GaSb in the temperature range between 1.4 to 300\ifmmode^\circ\else\textdegree\fi{}K and at hydrostatic pressures up to \ensuremath{\sim} 13 kbar. Samples with concentration in the range \ensuremath{\sim} 2 \ifmmode\times\else\texttimes\fi{} ${10}^{17}$ to \ensuremath{\sim} 7 \ifmmode\times\else\texttimes\fi{} ${10}^{18}$ ${\mathrm{cm}}^{\ensuremath{-}3}$ were investigated. At the highest pressures, the results suggest complete carrier transfer from the $\ensuremath{\Gamma}$ minimum into the $L$ minima or into impurity levels associated with the $L$ minima. The existence of the levels is confirmed by the observation of impurity conduction at low temperatures and deionization effects at elevated temperatures. An impurity activation energy of ${\ensuremath{\epsilon}}_{1}=13.8$ meV is seen for the tellurium donors in the lowest-concentration sample; the activation energy decreases with increasing concentration but remains nonzero in the highest-concentration sample. Weak-field magnetoresistance anisotropy was observed, and the relations $b+c=0$ and $d&gt;0$ for the inverted Seitz coefficients were found to hold at high pressures in the temperature range where $L$-band conduction is expected. Calculations indicate that in highly doped samples, acoustic mode scattering dominates at 300\ifmmode^\circ\else\textdegree\fi{}K, whereas at 77\ifmmode^\circ\else\textdegree\fi{}K the $L$-band carrier scattering is mainly due to ionized impurities. The results obtained for pressures insufficient to produce complete thermal decoupling between the $\ensuremath{\Gamma}$ minimum and the Te levels associated with the $L$ minima are shown to be predictable using a band model employed by Kosicki and Paul.

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