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src/12_band_structures_in_higher_dimensions.md

@@ -214,7 +214,7 @@ Consider a rectangular lattice with lattice constants $a_x$ and $a_y$.
 Suppose the hopping parameters in the two directions to be $t_1$ and $t_2$.
 Consider a single orbital per atom and only nearest-neighbour interactions.
 
-1. Write down a 2D tight-binding Schrodinger equation (expand to 2D the results of 1D).
+1. Write down a 2D tight-binding Schrödinger equation (expand to 2D the results of 1D).
 2. Formulate the Bloch ansatz for the wave function.
 3. Calculate the dispersion relation of this model.
 4. What Fermi surface shape would this model have if the atoms are monovalent?