  An axion dark matter search with the CAPP-8TB haloscope is reported. Our
results are sensitive to axion-photon coupling $g_{a\gamma\gamma}$ down to the
QCD axion band over the axion mass range between 6.62 and 6.82 $\mu$eV at a
90\% confidence level, which is the most sensitive result in the mass range to
date.
