English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Understanding the ultra-fast transport properties of hot charge carriers isof significant importance both fundamentally and technically in applicationslike solar cells and transistors. However, direct measurement of chargetransport at the relevant nanometre length scales is challenging with only afew experimental methods demonstrated to date. Here we report on molecularnanoprobe experiments on the Si(111)-7x7 at room temperature where chargeinjected from the tip of a scanning tunnelling microscope (STM) travelslaterally across a surface and induces single adorbate toluene molecules toreact over length scales of tens of nanometres. A simple model is developed forthe fraction of the tunnelling current captured into each of the surfaceelectronic bands with input from only high-resolution scanning tunnellingspectroscopy (STS) of the clean Si(111)-7x7 surface. This model isquantitatively linked to the voltage dependence of the molecular nanoprobeexperiments through a single manipulation probability (i.e. fitting parameter)per state. This model fits the measured data and gives explanation to themeasured voltage onsets, exponential increase in the measured manipulationprobabilities and plateau at higher voltages. It also confirms an ultrafastrelaxation to the bottom of a surface band for the injected charge afterinjection, but before the nonlocal spread across the surface.

A self-consistent model to link surface electronic band structure to the voltage dependence of hot electron induced molecular nanoprobe experiments