Anti-phase Modulation of Electron- and Hole-like States in Vortex Core of Bi₂Sr₂CaCu₂O_x Probed by Scanning Tunneling Spectroscopy

Abstract

In the vortex core of slightly overdoped Bi₂Sr₂CaCu₂O_x, the electron- and hole-like states have been found to exhibit spatial modulations in anti-phase with each other along the Cu–O bonding direction. Some kind of one-dimensionality has been observed in the vortex core, and it is more clearly seen in differential conductance maps at lower biases below ±9 mV.