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Marizza181 [45]
3 years ago
6

Consider an InSb NW with ballistic mean free path of 150nm. Calculate the current through a 250nm long InSb NW when a 100mV bias

is applied. Assume that valley degeneracy 1.
Engineering
1 answer:
MariettaO [177]3 years ago
7 0

Answer:

I =38.46KA

Explanation:

Given parameters include:

V = 100mV = 100 × 10⁻³ V

mean free path(W) = 150nm = 150 × 10⁻⁹ m

Length = 250 nm

From Ohm's Law ;

V = IR

I = \frac{V}{R}    ---------- equation (1)

Also;

R = \rho__0\frac{L}{A}

where:

\rho __o = resistivity  of InSb = 4 × 10⁻¹³ Ω-m

L = length

A = area of cross section

Replacing our values in the above equation; we have:

R = 4*10^{-13}*\frac{250nm}{150nm*250nm}

R = 4*10^{-13}*\frac{1}{150*10^{-9}m}

R = 2.6*10^{-6} Ω

R = 2.6 \muΩ

From equation (1):

I = \frac{V}{R}  

Therefore;

I = \frac{100*10^{-3}}{2.6*10^{-6}}

I =38461.54 V/Ω

Since 1 V/Ω = 0.001 kilo ampere (KA)

Then;

I =(38461.54 *0.001)KA

I =38.46KA

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