RT Journal Article
T1 Atomic Scale Control and Visualization of Topological Quantum Phase Transition in π‐Conjugated Polymers Driven by Their Length
A1 González‐Herrero, Héctor
A1 Mendieta‐Moreno, Jesús I.
A1 Edalatmanesh, Shayan
A1 Santos Barahona, José Manuel
A1 Martín León, Nazario
A1 Écija, David
A1 de la Torre, Bruno
A1 Jelinek, Pavel
AB Abstract: 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.
PB Wiley
SN 0935-9648
SN 1521-4095
YR 2021
FD 2021
LK https://hdl.handle.net/20.500.14352/92266
UL https://hdl.handle.net/20.500.14352/92266
LA eng
NO González-Herrero, H.; Mendieta-Moreno, J.; Edalatmanesh, S.; Santos, J.; Martín, N.; Écija, D.; de la Torre, B.; Jelinek, P. Atomic Scale Control and Visualization of Topological Quantum Phase Transition in π-Conjugated Polymers Driven by Their Length. Adv Mater 2021, 33, 2104495 DOI:10.1002/adma.202104495.
DS Docta Complutense
RD 18 abr 2025