Hi, I am a new member. May you help me with this problem? In Azbel-Kaner cyclotron resonance, a B field is placed parallel to the sample surface to make cyclotron motion, an oscillation electric field is place to induce resonance. There is a link about this: http://books.google.com.tw/books?id...n resonance+de Haas van alphen effect&f=false The resonance occurs when ω=n.ω' where ω'=eB/m' (cyclotron frequency_unknown value, we want to determine this) and ω is the frequency of Electric field E (known value). But I don't know how can we know when the resonances occur? ω=ω' or ω=2ω', ... Thank you a lot!