Carrier-Density Control of the Quantum-Confined 1T-TiSe2 Charge Density Wave

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F23%3A43970899" target="_blank" >RIV/49777513:23640/23:43970899 - isvavai.cz</a>

Výsledek na webu

<a href="https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.130.226401" target="_blank" >https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.130.226401</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevLett.130.226401" target="_blank" >10.1103/PhysRevLett.130.226401</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Carrier-Density Control of the Quantum-Confined 1T-TiSe2 Charge Density Wave

Popis výsledku v původním jazyce

Using angle-resolved photoemission spectroscopy, combined with first principle and coupled self -consistent Poisson-Schrodinger calculations, we demonstrate that potassium (K) atoms adsorbed on the low-temperature phase of 1T-TiSe2 induce the creation of a two-dimensional electron gas (2DEG) and quantum confinement of its charge-density wave (CDW) at the surface. By further changing the K coverage, we tune the carrier density within the 2DEG that allows us to nullify, at the surface, the electronic energy gain due to exciton condensation in the CDW phase while preserving a long-range structural order. Our Letter constitutes a prime example of a controlled exciton-related many-body quantum state in reduced dimensionality by alkali-metal dosing.

Název v anglickém jazyce

Carrier-Density Control of the Quantum-Confined 1T-TiSe2 Charge Density Wave

Popis výsledku anglicky

Using angle-resolved photoemission spectroscopy, combined with first principle and coupled self -consistent Poisson-Schrodinger calculations, we demonstrate that potassium (K) atoms adsorbed on the low-temperature phase of 1T-TiSe2 induce the creation of a two-dimensional electron gas (2DEG) and quantum confinement of its charge-density wave (CDW) at the surface. By further changing the K coverage, we tune the carrier density within the 2DEG that allows us to nullify, at the surface, the electronic energy gain due to exciton condensation in the CDW phase while preserving a long-range structural order. Our Letter constitutes a prime example of a controlled exciton-related many-body quantum state in reduced dimensionality by alkali-metal dosing.

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Physical Review Letters

ISSN

0031-9007

e-ISSN

1079-7114

Svazek periodika

130

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

—

Kód UT WoS článku

001016854600019

EID výsledku v databázi Scopus

2-s2.0-85161904570