Anti-phase Modulation of Electron- and Hole-like States in Vortex Core of Bi2Sr2CaCu2Ox Probed by Scanning Tunneling Spectroscopy

TL;DR

This study uses scanning tunneling spectroscopy to reveal anti-phase spatial modulations of electron- and hole-like states in the vortex core of Bi2Sr2CaCu2Ox, highlighting one-dimensional features at low bias voltages.

Contribution

It demonstrates the anti-phase modulation of electron- and hole-like states in vortex cores, revealing new spatial electronic structure details in high-Tc cuprates.

Findings

Anti-phase modulation of electron- and hole-like states observed

One-dimensionality in vortex core revealed at low biases

Spatial modulations more prominent below +-9 mV

Abstract

In the vortex core of slightly overdoped Bi2Sr2CaCu2Ox, the electron-like 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.