Atomic scale control and visualization of topological quantum phase transition in π-conjugated polymers driven by their length

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00549109" target="_blank" >RIV/68378271:_____/21:00549109 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15640/21:73612298

Výsledek na webu

<a href="https://doi.org/10.1002/adma.202104495" target="_blank" >https://doi.org/10.1002/adma.202104495</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adma.202104495" target="_blank" >10.1002/adma.202104495</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Atomic scale control and visualization of topological quantum phase transition in π-conjugated polymers driven by their length

Popis výsledku v původním jazyce

Quantum phase transitions (QPTs) driven by quantum fluctuations are transitions between distinct quantum phases of matter. At present, they are poorly understood and not readily controlled. Here, scanning tunneling microscopy (STM) and noncontact atomic force microscopy (nc-AFM) are used to explore atomic scale control over quantum phase transitions between two different topological quantum states of a well-defined π-conjugated polymer. The phase transition is driven by a pseudo Jahn–Teller effect that is activated above a certain polymer chain length. In addition, theoretical calculations indicate the presence of long-lasting coherent fluctuations between the polymer's two quantum phases near the phase transition, at finite temperature. This work thus presents a new way of exploring atomic-scale control over QPTs and indicates that emerging quantum criticality in the vicinity of a QPT can give rise to new states of organic matter.

Název v anglickém jazyce

Atomic scale control and visualization of topological quantum phase transition in π-conjugated polymers driven by their length

Popis výsledku anglicky

Quantum phase transitions (QPTs) driven by quantum fluctuations are transitions between distinct quantum phases of matter. At present, they are poorly understood and not readily controlled. Here, scanning tunneling microscopy (STM) and noncontact atomic force microscopy (nc-AFM) are used to explore atomic scale control over quantum phase transitions between two different topological quantum states of a well-defined π-conjugated polymer. The phase transition is driven by a pseudo Jahn–Teller effect that is activated above a certain polymer chain length. In addition, theoretical calculations indicate the presence of long-lasting coherent fluctuations between the polymer's two quantum phases near the phase transition, at finite temperature. This work thus presents a new way of exploring atomic-scale control over QPTs and indicates that emerging quantum criticality in the vicinity of a QPT can give rise to new states of organic matter.

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

<a href="/cs/project/GX20-13692X" target="_blank" >GX20-13692X: 1D molekulární řetízky na površích</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Advanced Materials

ISSN

0935-9648

e-ISSN

1521-4095

Svazek periodika

33

Číslo periodika v rámci svazku

44

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

2104495

Kód UT WoS článku

000696904400001

EID výsledku v databázi Scopus

2-s2.0-85115009470