
TY  - JOUR
A1  - Stewart, A. M. 
T1  - Gauge Invariant Magnetism
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1997
VL  - 50
IS  - 6
SP  - 1061
EP  - 1081
KW  - 
UR  - https://doi.org/10.1071/P97024 
N2  - An introduction is given to features of gauge invariance in classical and quantum mechanics that are of importance for magnetism in condensed matter systems. A version of quantum mechanics is described in which full electromagnetic gauge arbitrariness is displayed explicitly at every stage. The division of orbital magnetism into paramagnetism and diamagnetism is examined and it is shown that only by treating both of these on an equal footing can a gauge invariant treatment of magnetism be constructed. 
ER  -

