Tight binding model — CSIR Net PYQ (Question 8)

A Tight binding model previous-year question (PYQ) from Solid State Physics (CSIR Net). Read the question, check the correct answer, then practise the full topic.

Question 8 of 12 · 5.0 marks

A tight binding model of electrons in one dimension has the dispersion relation $ϵ(k)=-2t(1-coska)$, where $t>0,a$ is the lattice constant and $-\frac{\pi }{a}<k<\frac{\pi }{a}$. Which of the following figures best represents the density of states over the range $\frac{\pi }{2a}\le k<\frac{\pi }{a}$?

1. 1
2. 2
3. 3
4. 4

Correct answer: Option 2

About this question

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