Question

A band in a particular semiconductor has the following dispersive relation: $E(k) = E_0[1-cos(ka)]$ Where $E_0$=1.5 eV and a=0.5 nm. Find the effective mass in terms of the electron rest mass $m_0$ for k=0 and $k=frac{pi}{a}$. (Reminder: $m_0 = 9.11 imes10^{-31}$ kg, $hbar = 1.055 imes10^{-34}$ J.s, 1 eV = $1.602 imes10^{-19}$J )

          A band in a particular semiconductor has the following dispersive relation:
$E(k) = E_0[1-cos(ka)]$
Where $E_0$=1.5 eV and a=0.5 nm. Find the effective mass in terms of the electron rest
mass $m_0$ for k=0 and $k=frac{pi}{a}$.
(Reminder: $m_0 = 9.11	imes10^{-31}$ kg, $hbar = 1.055	imes10^{-34}$ J.s, 1 eV = $1.602	imes10^{-19}$J )

$A band in a particular semiconductor has the following dispersive relation: E(k) = E0[1-cos(ka)] Where E0=1.5 eV and a=0.5 nm. Find the effective mass in terms of the electron rest mass m0 for k=0 and k=fracpia. (Reminder: m0 = 9.11 imes10^-31 kg, hbar = 1.055 imes10^-34 J.s, 1 eV = 1.602 imes10^-19J )$

Added by Bradley C.

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