The Čerenkov limit of Si, GaAs and GaP in electron energy loss spectrometry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F15%3APU114597" target="_blank" >RIV/00216305:26210/15:PU114597 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.ultramic.2015.06.005" target="_blank" >http://dx.doi.org/10.1016/j.ultramic.2015.06.005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ultramic.2015.06.005" target="_blank" >10.1016/j.ultramic.2015.06.005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Čerenkov limit of Si, GaAs and GaP in electron energy loss spectrometry

Popis výsledku v původním jazyce

Since the advent of monochromated electron energy loss spectrometry (EELS) the experimental detection of band gaps in semiconducting materials is of great importance. In the non-relativistic limit of this technique the onset of the inelastic signal represents the band gap. But due to relativistic energy losses, like Čerenkov losses and the corresponding light guiding modes, appearing at high beam energies the band gap is usually hidden. The highest beam energy, which does not excite relativistic losses in a certain material, is called the Čerenkov limit of the material. In this work the low loss EELS signals of Si, GaAs and GaP are measured at various beam energies and the calculated Čerenkov limits are experimentally confirmed.

Název v anglickém jazyce

The Čerenkov limit of Si, GaAs and GaP in electron energy loss spectrometry

Popis výsledku anglicky

Since the advent of monochromated electron energy loss spectrometry (EELS) the experimental detection of band gaps in semiconducting materials is of great importance. In the non-relativistic limit of this technique the onset of the inelastic signal represents the band gap. But due to relativistic energy losses, like Čerenkov losses and the corresponding light guiding modes, appearing at high beam energies the band gap is usually hidden. The highest beam energy, which does not excite relativistic losses in a certain material, is called the Čerenkov limit of the material. In this work the low loss EELS signals of Si, GaAs and GaP are measured at various beam energies and the calculated Čerenkov limits are experimentally confirmed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Ultramicroscopy

ISSN

0304-3991

e-ISSN

1879-2723

Svazek periodika

157

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

73-78

Kód UT WoS článku

000361002400009

EID výsledku v databázi Scopus

2-s2.0-84934902773