Laser-Induced Cooperative Transition in Molecular Electronic Crystal

dc.contributor.author Hu, Yong
dc.contributor.author Huang, C.
dc.contributor.author Kim, R.
dc.contributor.author Wang, Jigang
dc.contributor.author et al.
dc.contributor.department Ames National Laboratory
dc.contributor.department Physics and Astronomy
dc.date.accessioned 2023-05-31T19:07:49Z
dc.date.available 2023-05-31T19:07:49Z
dc.date.issued 2021-08-16
dc.description.abstract The competing and non-equilibrium phase transitions, involving dynamic tunability of cooperative electronic and magnetic states in strongly correlated materials, show great promise in quantum sensing and information technology. To date, the stabilization of transient states is still in the preliminary stage, particularly with respect to molecular electronic solids. Here, a dynamic and cooperative phase in potassium-7,7,8,8-tetracyanoquinodimethane (K-TCNQ) with the control of pulsed electromagnetic excitation is demonstrated. Simultaneous dynamic and coherent lattice perturbation with 8 ns pulsed laser (532 nm, 15 MW cm−2, 10 Hz) in such a molecular electronic crystal initiates a stable long-lived (over 400 days) conducting paramagnetic state (≈42 Ωcm), showing the charge–spin bistability over a broad temperature range from 2 to 360 K. Comprehensive noise spectroscopy, in situ high-pressure measurements, electron spin resonance (ESR), theoretical model, and scanning tunneling microscopy/spectroscopy (STM/STS) studies provide further evidence that such a transition is cooperative, requiring a dedicated charge–spin–lattice decoupling to activate and subsequently stabilize nonequilibrium phase. The cooperativity triggered by ultrahigh-strain-rate (above 106 s−1) pulsed excitation offers a collective control toward the generation and stabilization of strongly correlated electronic and magnetic orders in molecular electronic solids and offers unique electro-magnetic phases with technological promises.
dc.description.comments This is a manuscript of an article published as Hu, Yong, Dasharath Adhikari, Andrew Tan, Xi Dong, Taishan Zhu, Xiaoyu Wang, Yulong Huang et al. "Laser‐Induced Cooperative Transition in Molecular Electronic Crystal." Advanced Materials 33, no. 39 (2021): 2103000. DOI: 10.1002/adma.202103000. Copyright 2021 Wiley-VCH GmbH. Posted with permission. DOE Contract Number(s): SC0018631; SC0019120; AC02-07CH11358; AC02-05CH11231.
dc.identifier.other 1832465
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/7rKo938r
dc.language.iso en
dc.publisher Iowa State University Digital Repository, Ames IA (United States)
dc.relation.ispartofseries IS-J 10570
dc.source.uri https://doi.org/10.1002/adma.202103000 *
dc.subject.disciplines DegreeDisciplines::Engineering::Materials Science and Engineering
dc.subject.keywords hidden phase
dc.subject.keywords bistability
dc.subject.keywords photoexcitation
dc.subject.keywords dimerization
dc.subject.keywords DFT calculations
dc.title Laser-Induced Cooperative Transition in Molecular Electronic Crystal
dc.type Article
dspace.entity.type Publication
relation.isAuthorOfPublication 48b512f5-d662-4970-a9d2-47154238a4df
relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
relation.isOrgUnitOfPublication 4a05cd4d-8749-4cff-96b1-32eca381d930
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