- #1

- 27

- 1

## Main Question or Discussion Point

Hi PF,

Hoping somebody out there can help me to clear up what is probably a silly misunderstanding of the IQHE:

Since the quantized Hall current can be expressed as a property of occupied bulk bands (Chern number) why do we say that the current is carried by the edge states?

Hoping somebody out there can help me to clear up what is probably a silly misunderstanding of the IQHE:

Since the quantized Hall current can be expressed as a property of occupied bulk bands (Chern number) why do we say that the current is carried by the edge states?