# Echolocation by Quasiparticles

## TL;DR

This paper introduces a method to analyze STM data by examining energy-dependent LDOS oscillations caused by quasiparticle interference, enabling the localization of scatterers and characterization of impurities in superconductors.

## Contribution

It proposes a novel analysis technique for STM data that leverages quasiparticle interference patterns to identify scatterer positions and impurity types.

## Key findings

- LDOS oscillations reveal scatterer locations
- Method can distinguish impurity types in superconductors
- Applicable to STM experiments for material characterization

## Abstract

It is shown that the local density of states (LDOS), measured in an Scanning Tunneling Microscopy (STM) experiment, at a single tip position contains oscillations as a function of Energy, due to quasiparticle interference, which is related to the positions of nearby scatterers. We propose a method of STM data analysis based on this idea, which can be used to locate the scatterers. In the case of a superconductor, the method can potentially distinguish the nature of the scattering by a particular impurity.