og:image: http://science.sciencemag.org/content/363/6423/F1.medium.gif citation_mjid: sci;363/6423/158 article:published_time: 2019-01-11 og:site_name: Science citation_reference: citation_journal_title=Science;citation_journal_abbrev=Science;citation_author=J. W. Park;citation_author=Z. Z. Yan;citation_author=H. Loh;citation_author=S. A. Will;citation_author=M. W. Zwierlein;citation_title=Second-scale nuclear spin coherence time of ultracold 23Na40K molecules;citation_pages=372-375;citation_volume=357;citation_year=2017;citation_issue=6349;citation_pmid=28751602;citation_doi=10.1126/science.aal5066 citation_journal_title: Science type: article og:description: Vibrational excitation of molecules adsorbed on a surface is usually limited because the vibrational energy is rapidly transferred into phonons, the vibrational modes of the substrate. Chen et al. found that this is not the case for CO molecules adsorbed on a surface of NaCl. The CO molecules efficiently transferred vibrational energy within groups of molecules from one high excitation state to another until they reached the dissociation limit. This process was possible because of the close proximity of the molecules and the limited transfer of energy to just one phonon mode in the salt surface. Science , this issue p. [158][1] Using a mid-infrared emission spectrometer based on a superconducting nanowire single-photon detector, we observed the dynamics of vibrational energy pooling of carbon monoxide (CO) adsorbed at the surface of a sodium chloride (NaCl) crystal. After exciting a majority of the CO molecules to their first vibrationally excited state (v = 1), we observed infrared emission from states up to v = 27. Kinetic Monte Carlo simulations showed that vibrational energy collects in a few CO molecules at the expense of those up to eight lattice sites away by selective excitation of NaCl?s transverse phonons. The vibrating CO molecules behave like classical oscillating dipoles, losing their energy to NaCl lattice vibrations via the electromagnetic near-field. This is analogous to Sommerfeld?s description of radio transmission along Earth?s surface by ground waves. [1]: /lookup/doi/10.1126/science.aav4278 citation_author_email: alec.wodtke@mpibpc.mpg.de citation_issn: 0036-8075 citation_full_html_url: http://science.sciencemag.org/content/363/6423/158.full dc:title: The Sommerfeld ground-wave limit for a molecule adsorbed at a surface | Science citation_public_url: http://science.sciencemag.org/content/363/6423/158 Content-Encoding: UTF-8 citation_pdf_url: http://science.sciencemag.org/content/sci/363/6423/158.full.pdf citation_section: Report citation_lastpage: 161 DC.Identifier: 10.1126/science.aav4278 DC.Rights: Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. http://www.sciencemag.org/about/science-licenses-journal-article-reuseThis is an article distributed under the terms of the Science Journals Default License. citation_author: Li Chen citation_abstract_html_url: http://science.sciencemag.org/content/363/6423/158.abstract citation_issue: 6423 HW.identifier: /sci/363/6423/158.atom citation_doi: 10.1126/science.aav4278 citation_volume: 363 Content-Language: en Generator: Drupal 7 (http://drupal.org) citation_author_orcid: http://orcid.org/0000-0001-7671-7321 DC.AccessRights: restricted citation_publication_date: 2019/01/11 citation_title: The Sommerfeld ground-wave limit for a molecule adsorbed at a surface citation_author_institution: Department of Dynamics at Surfaces, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany. citation_publisher: American Association for the Advancement of Science HandheldFriendly: true citation_id: 363/6423/158 cleartype: on title: The Sommerfeld ground-wave limit for a molecule adsorbed at a surface | Science DC.Description: Vibrational excitation of molecules adsorbed on a surface is usually limited because the vibrational energy is rapidly transferred into phonons, the vibrational modes of the substrate. Chen et al. found that this is not the case for CO molecules adsorbed on a surface of NaCl. The CO molecules efficiently transferred vibrational energy within groups of molecules from one high excitation state to another until they reached the dissociation limit. This process was possible because of the close proximity of the molecules and the limited transfer of energy to just one phonon mode in the salt surface. Science , this issue p. [158][1] Using a mid-infrared emission spectrometer based on a superconducting nanowire single-photon detector, we observed the dynamics of vibrational energy pooling of carbon monoxide (CO) adsorbed at the surface of a sodium chloride (NaCl) crystal. After exciting a majority of the CO molecules to their first vibrationally excited state (v = 1), we observed infrared emission from states up to v = 27. Kinetic Monte Carlo simulations showed that vibrational energy collects in a few CO molecules at the expense of those up to eight lattice sites away by selective excitation of NaCl?s transverse phonons. The vibrating CO molecules behave like classical oscillating dipoles, losing their energy to NaCl lattice vibrations via the electromagnetic near-field. This is analogous to Sommerfeld?s description of radio transmission along Earth?s surface by ground waves. [1]: /lookup/doi/10.1126/science.aav4278 Content-Type-Hint: text/html; charset=utf-8 DC.Format: text/html DC.Publisher: American Association for the Advancement of Science DC.Contributor: Li Chen Content-Type: application/xhtml+xml; charset=UTF-8 X-Parsed-By: org.apache.tika.parser.DefaultParser og:type: article article:section: Report citation_pmid: 30545846 citation_article_type: Research Article og:title: The Sommerfeld ground-wave limit for a molecule adsorbed at a surface citation_abstract:

Using a mid-infrared emission spectrometer based on a superconducting nanowire single-photon detector, we observed the dynamics of vibrational energy pooling of carbon monoxide (CO) adsorbed at the surface of a sodium chloride (NaCl) crystal. After exciting a majority of the CO molecules to their first vibrationally excited state (v = 1), we observed infrared emission from states up to v = 27. Kinetic Monte Carlo simulations showed that vibrational energy collects in a few CO molecules at the expense of those up to eight lattice sites away by selective excitation of NaCl?s transverse phonons. The vibrating CO molecules behave like classical oscillating dipoles, losing their energy to NaCl lattice vibrations via the electromagnetic near-field. This is analogous to Sommerfeld?s description of radio transmission along Earth?s surface by ground waves.

DC.Title: The Sommerfeld ground-wave limit for a molecule adsorbed at a surface issue_cover_image: http://science.sciencemag.org/sites/default/files/highwire/sci/363/6423.cover-source.gif citation_firstpage: 158 X-UA-Compatible: IE=edge,chrome=1 MobileOptimized: width HW.pisa: sci;363/6423/158 viewport: width=device-width, initial-scale=1 DC.Language: en DC.Date: 2019-01-11 category: research-article og:url: http://science.sciencemag.org/content/363/6423/158 article_thumbnail: http://science.sciencemag.org/content/sci/363/6423/158/embed/mml-math-1.gif