MAGNETOELASTIC BEHAVIOR OF NBSE3

We have used the vibrating-reed technique to investigate the magnetoelastic properties of NbSe 3 in an attempt to detect any contribution to stiffness from magnetic-field-assisted normal-to-charge-density-wave (CDW) carrier conversion below the material's lower CDW transition. For a magnetic-field transverse to the reed, we find the resonant frequency to decrease quadratically with field strength. However, the magnitude of this change is too large to be associated with carrier conversion. We can attribute the effect to the interaction between the field and the material's anisotropic magnetic susceptibility. This phenomenon is large enough to obscure attempts to detect stiffness contribution from carrier conversion. However, there exists the possibility of exploiting this effect to study the CDW through its influence on the magnetic susceptibility.