Manipulation of the surface density of states of Ag(111) by means of resonators: Experiment and theory

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33161344" target="_blank" >RIV/61989592:15310/16:33161344 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevB.94.075408" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.94.075408</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.94.075408" target="_blank" >10.1103/PhysRevB.94.075408</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Manipulation of the surface density of states of Ag(111) by means of resonators: Experiment and theory

Popis výsledku v původním jazyce

We show that the density of surface Shockley states of Ag(111) probed by the differential conductance G(V) = dI/dV by a scanning-tunneling microscope (STM) can be enhanced significantly at certain energies and positions introducing simple arrays of Co or Ag atoms on the surface, in contrast to other noble-metal surfaces. Specifically we have studied resonators consisting of two parallel walls of five atoms deposited on the clean Ag(111) surface. A simple model in which the effect of the adatoms is taken into account by an attractive local potential and a small hybridization between surface and bulk at the position of the adatoms explains the main features of the observed G(V) and allows us to extract the proportion of surface and bulk states sensed by the STM tip. These results might be relevant to engineer the surface spectral density of states, to study the effects of surface states on the Kondo effect, and to separate bulk and surface contributions in STM studies of topological surface states.

Název v anglickém jazyce

Manipulation of the surface density of states of Ag(111) by means of resonators: Experiment and theory

Popis výsledku anglicky

We show that the density of surface Shockley states of Ag(111) probed by the differential conductance G(V) = dI/dV by a scanning-tunneling microscope (STM) can be enhanced significantly at certain energies and positions introducing simple arrays of Co or Ag atoms on the surface, in contrast to other noble-metal surfaces. Specifically we have studied resonators consisting of two parallel walls of five atoms deposited on the clean Ag(111) surface. A simple model in which the effect of the adatoms is taken into account by an attractive local potential and a small hybridization between surface and bulk at the position of the adatoms explains the main features of the observed G(V) and allows us to extract the proportion of surface and bulk states sensed by the STM tip. These results might be relevant to engineer the surface spectral density of states, to study the effects of surface states on the Kondo effect, and to separate bulk and surface contributions in STM studies of topological surface states.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Physical Review B

ISSN

1098-0121

e-ISSN

—

Svazek periodika

94

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

"075408-1"-"075408-8"

Kód UT WoS článku

000381307000007

EID výsledku v databázi Scopus

2-s2.0-84981284305