when calculating the frequencies of 1\H's oscillation using De Haas-van Alphen, we need to find the extremal cross-section of the fermi surface perpendicular to the magnetic field direction.(adsbygoogle = window.adsbygoogle || []).push({});

in 3d i can understand this. but when talking about a 2d lattice where the magnetic field is perpendicular to the lattice plane, what do i take as the extremal fermi surface cross section?

and another question, back to 3D - if i have several bands, each of them have different fermi surface, right? so i need to take the extremal cross section at each of them?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# De Haas-van Alphen effect in a 2d lattice

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

**Physics Forums | Science Articles, Homework Help, Discussion**