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http://hdl.handle.net/10261/235566
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dc.contributor.author | Chen, Chao | es_ES |
dc.contributor.author | Chen, Shu | es_ES |
dc.contributor.author | Lobo, Ricardo P.S.M. | es_ES |
dc.contributor.author | Maciel-Escudero, Carlos | es_ES |
dc.contributor.author | Lewin, Martin | es_ES |
dc.contributor.author | Taubner, Thomas | es_ES |
dc.contributor.author | Xiong, Wei | es_ES |
dc.contributor.author | Xu, Ming | es_ES |
dc.contributor.author | Zhang, Xinliang | es_ES |
dc.contributor.author | Miao, Xiangshui | es_ES |
dc.contributor.author | Li, Peining | es_ES |
dc.contributor.author | Hillenbrand, Rainer | es_ES |
dc.date.accessioned | 2021-03-23T13:06:01Z | - |
dc.date.available | 2021-03-23T13:06:01Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | ACS Photonics 7(12): 3499–3506 (2020) | es_ES |
dc.identifier.uri | http://hdl.handle.net/10261/235566 | - |
dc.description.abstract | Chalcogenide phase-change materials (PCMs) exhibit optical phonons at terahertz (THz) frequencies, which can be used for studying basic properties of the phase transition and which lead to a strong dielectric contrast that could be exploited for THz photonics applications. Here, we demonstrate that the phonons of PCMs can be studied by frequency-tunable THz scattering-type scanning near-field optical microscopy (s-SNOM). Specifically, we perform spectroscopic THz nanoimaging of a PCM sample comprising amorphous and crystalline phases. We observe phonon signatures, yielding strong s-SNOM signals and, most important, clear spectral differences between the amorphous and crystalline PCM, which allows for distinguishing the PCM phases with high confidence on the nanoscale. We also found that the spectral signature can be enhanced, regarding both signal strength and spectral contrast, by increasing the radius of the probing tip. From a general perspective, our results establish THz s-SNOM for nanoscale structural and chemical mapping based on local phonon spectroscopy. | es_ES |
dc.description.sponsorship | C.C. acknowledges the Postdoctoral Fund of Hubei Province (Grant No. 182/0106182067). M.X. acknowledges the National Key R&D Plan of China (Grant No. 2017YFB0701701 “Materials Genome Engineering”) and the National Natural Science Foundation of China (Grant No. 51772113). M.L. and T.T. acknowledge funding from the DFG (German Science Foundation) within the collaborative research center SFB 917 “Nanoswitches”. P. L. acknowledges the National Natural Science Foundation of China (Grant No. 62075070). R.H. acknowledges financial support from the European Union’s H2020 FET OPEN Project PETER (GA#767227), the Spanish Ministry of Science, Innovation and Universities (National Project RTI2018-094830-B-100 and the Project MDM-2016-0618 of the Marie de Maeztu Units of Excellence Program), and the Basque Government (Grant No. IT1164-19). | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | ACS Publications | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/767227 | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-094830-B-100 | es_ES |
dc.relation | RTI2018-094830-B-100/AEI/10.13039/501100011033 | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MDM-2016-0618 | es_ES |
dc.rights | closedAccess | es_ES |
dc.title | Terahertz nanoimaging and nanospectroscopy of chalcogenide phase-change materials | es_ES |
dc.type | artículo | es_ES |
dc.identifier.doi | 10.1021/acsphotonics.0c01541 | - |
dc.description.peerreviewed | Peer reviewed | es_ES |
dc.relation.publisherversion | https://doi.org/10.1021/acsphotonics.0c01541 | es_ES |
dc.identifier.e-issn | 2330-4022 | - |
dc.contributor.funder | Hubei Provincial Natural Science Foundation | es_ES |
dc.contributor.funder | German Research Foundation | es_ES |
dc.contributor.funder | National Natural Science Foundation of China | es_ES |
dc.contributor.funder | European Commission | es_ES |
dc.contributor.funder | Ministerio de Economía y Competitividad (España) | es_ES |
dc.contributor.funder | Agencia Estatal de Investigación (España) | es_ES |
dc.contributor.funder | Ministerio de Ciencia, Innovación y Universidades (España) | es_ES |
dc.contributor.funder | Eusko Jaurlaritza | es_ES |
dc.relation.csic | Sí | es_ES |
oprm.item.hasRevision | no ko 0 false | * |
dc.identifier.funder | http://dx.doi.org/10.13039/501100003086 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100003329 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100001809 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100001659 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100011033 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100000780 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.grantfulltext | none | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | No Fulltext | - |
item.languageiso639-1 | en | - |
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