A slider body of a head slider has a medium-opposed surface opposed to a recording medium in a recording medium drive. A head element is mounted on the slider body. A charge region is established on the slider body for holding an electric charge at a local area in the medium-opposed surface of the slider body. The charge region is located at a position distanced from the head element. Capacitance is stored between the head slider and the recording medium. The capacitance serves to determine the distance between the head slider and the recording medium. In this case, electric potential concentrates at the charge region, so that electrospark concentrates at the charge region. The head element can be distanced from the electrospark. The head element can thus be prevented from destruction.