Abstract
The magnetic susceptibility of a model charge-density wave (CDW) system is discussed. It is found that the orbital part of the susceptibility can be large and paramagnetic due to mixing of states above and below the CDW energy gaps by the magnetic field. The paramagnetic contribution is anisotropic and depends on the square of the sine of the angle between the magnetic field $\stackrel{\ensuremath{\rightarrow}}{H}$ and the CDW wave vector $\stackrel{\ensuremath{\rightarrow}}{\mathrm{Q}}$. The relevance of these findings to recent measurements of the susceptibility of niobium triselenide is discussed.
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