Photomolecular High-Temperature Superconductivity

The properties of organic conductors are often tuned by the application of chemical or external pressure, which change orbital overlaps and electronic bandwidths while leaving the molecular building blocks virtually unperturbed. Here, we show that, unlike any other method, light can be used to manip...

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Autores principales:	M. Buzzi, D. Nicoletti, M. Fechner, N. Tancogne-Dejean, M. A. Sentef, A. Georges, T. Biesner, E. Uykur, M. Dressel, A. Henderson, T. Siegrist, J. A. Schlueter, K. Miyagawa, K. Kanoda, M.-S. Nam, A. Ardavan, J. Coulthard, J. Tindall, F. Schlawin, D. Jaksch, A. Cavalleri
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2020
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/8d4f7be3595340edb88ede0caf03d5fe
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spelling	oai:doaj.org-article:8d4f7be3595340edb88ede0caf03d5fe2021-12-02T14:23:07ZPhotomolecular High-Temperature Superconductivity10.1103/PhysRevX.10.0310282160-3308https://doaj.org/article/8d4f7be3595340edb88ede0caf03d5fe2020-08-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.10.031028http://doi.org/10.1103/PhysRevX.10.031028https://doaj.org/toc/2160-3308The properties of organic conductors are often tuned by the application of chemical or external pressure, which change orbital overlaps and electronic bandwidths while leaving the molecular building blocks virtually unperturbed. Here, we show that, unlike any other method, light can be used to manipulate the local electronic properties at the molecular sites, giving rise to new emergent properties. Targeted molecular excitations in the charge-transfer salt κ-(BEDT-TTF)_{2}Cu[N(CN)_{2}]Br induce a colossal increase in carrier mobility and the opening of a superconducting optical gap. Both features track the density of quasiparticles of the equilibrium metal and can be observed up to a characteristic coherence temperature T^{*}≃50 K, far higher than the equilibrium transition temperature T_{C}=12.5 K. Notably, the large optical gap achieved by photoexcitation is not observed in the equilibrium superconductor, pointing to a light-induced state that is different from that obtained by cooling. First-principles calculations and model Hamiltonian dynamics predict a transient state with long-range pairing correlations, providing a possible physical scenario for photomolecular superconductivity.M. BuzziD. NicolettiM. FechnerN. Tancogne-DejeanM. A. SentefA. GeorgesT. BiesnerE. UykurM. DresselA. HendersonT. SiegristJ. A. SchlueterK. MiyagawaK. KanodaM.-S. NamA. ArdavanJ. CoulthardJ. TindallF. SchlawinD. JakschA. CavalleriAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 10, Iss 3, p 031028 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 M. Buzzi D. Nicoletti M. Fechner N. Tancogne-Dejean M. A. Sentef A. Georges T. Biesner E. Uykur M. Dressel A. Henderson T. Siegrist J. A. Schlueter K. Miyagawa K. Kanoda M.-S. Nam A. Ardavan J. Coulthard J. Tindall F. Schlawin D. Jaksch A. Cavalleri Photomolecular High-Temperature Superconductivity
description	The properties of organic conductors are often tuned by the application of chemical or external pressure, which change orbital overlaps and electronic bandwidths while leaving the molecular building blocks virtually unperturbed. Here, we show that, unlike any other method, light can be used to manipulate the local electronic properties at the molecular sites, giving rise to new emergent properties. Targeted molecular excitations in the charge-transfer salt κ-(BEDT-TTF)_{2}Cu[N(CN)_{2}]Br induce a colossal increase in carrier mobility and the opening of a superconducting optical gap. Both features track the density of quasiparticles of the equilibrium metal and can be observed up to a characteristic coherence temperature T^{*}≃50 K, far higher than the equilibrium transition temperature T_{C}=12.5 K. Notably, the large optical gap achieved by photoexcitation is not observed in the equilibrium superconductor, pointing to a light-induced state that is different from that obtained by cooling. First-principles calculations and model Hamiltonian dynamics predict a transient state with long-range pairing correlations, providing a possible physical scenario for photomolecular superconductivity.
format	article
author	M. Buzzi D. Nicoletti M. Fechner N. Tancogne-Dejean M. A. Sentef A. Georges T. Biesner E. Uykur M. Dressel A. Henderson T. Siegrist J. A. Schlueter K. Miyagawa K. Kanoda M.-S. Nam A. Ardavan J. Coulthard J. Tindall F. Schlawin D. Jaksch A. Cavalleri
author_facet	M. Buzzi D. Nicoletti M. Fechner N. Tancogne-Dejean M. A. Sentef A. Georges T. Biesner E. Uykur M. Dressel A. Henderson T. Siegrist J. A. Schlueter K. Miyagawa K. Kanoda M.-S. Nam A. Ardavan J. Coulthard J. Tindall F. Schlawin D. Jaksch A. Cavalleri
author_sort	M. Buzzi
title	Photomolecular High-Temperature Superconductivity
title_short	Photomolecular High-Temperature Superconductivity
title_full	Photomolecular High-Temperature Superconductivity
title_fullStr	Photomolecular High-Temperature Superconductivity
title_full_unstemmed	Photomolecular High-Temperature Superconductivity
title_sort	photomolecular high-temperature superconductivity
publisher	American Physical Society
publishDate	2020
url	https://doaj.org/article/8d4f7be3595340edb88ede0caf03d5fe
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Photomolecular High-Temperature Superconductivity

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