Greek letter and subscript at the same time in axis label

I want to write x-axis label as (\Delta / H_B) but I could not. Delta is a greek letter and B is a subscription. please help me out how to solve it.

[Walter Roberson]

Which release?

xlabel('\Delta / H_B')

looks fine to me in R2018a.

Answer 1

[YT]

You almost had it

xlabel('\Delta H_{B}')

[Mos_bad]

I mean Delta over H_B

[Walter Roberson]

Perhaps you would prefer

xlabel('$\frac{\Delta}{H_{B}}$')