Photoabsorption and photoemission of magnesium diboride at the Mg K edge
The Mg K edge photoabsorption spectrum and the B 1s, Mg 1s, Mg 2p and valence band photoemission spectra of polycrystalline magnesium diboride have been measured. The photoabsorption spectra of the diboride and the oxide, which is present as an impurity, were separated by measuring the Auger electro...
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| Veröffentlicht in: | Journal of physics. Condensed matter 2009-10, Vol.21 (40), p.405701-405701 (6) |
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| container_end_page | 405701 (6) |
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| container_issue | 40 |
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| container_title | Journal of physics. Condensed matter |
| container_volume | 21 |
| creator | Prince, K C Feyer, V Tadich, A Thomsen, L Cowie, B C C |
| description | The Mg K edge photoabsorption spectrum and the B 1s, Mg 1s, Mg 2p and valence band photoemission spectra of polycrystalline magnesium diboride have been measured. The photoabsorption spectra of the diboride and the oxide, which is present as an impurity, were separated by measuring the Auger electron partial yield at electron energies characteristic of each phase. The spectra are consistent with published calculations of the density of unoccupied p symmetry states. Better agreement is obtained with calculations for the ground state of the system than with ones for the excited state. Valence band photoemission spectra were measured at photon energies corresponding to core resonances, but, within the signal to noise level of the spectra, no resonant enhancement was observed. This is consistent with the delocalized nature of the valence band. |
| doi_str_mv | 10.1088/0953-8984/21/40/405701 |
| format | Article |
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The photoabsorption spectra of the diboride and the oxide, which is present as an impurity, were separated by measuring the Auger electron partial yield at electron energies characteristic of each phase. The spectra are consistent with published calculations of the density of unoccupied p symmetry states. Better agreement is obtained with calculations for the ground state of the system than with ones for the excited state. Valence band photoemission spectra were measured at photon energies corresponding to core resonances, but, within the signal to noise level of the spectra, no resonant enhancement was observed. 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Condensed matter</title><addtitle>J Phys Condens Matter</addtitle><description>The Mg K edge photoabsorption spectrum and the B 1s, Mg 1s, Mg 2p and valence band photoemission spectra of polycrystalline magnesium diboride have been measured. The photoabsorption spectra of the diboride and the oxide, which is present as an impurity, were separated by measuring the Auger electron partial yield at electron energies characteristic of each phase. The spectra are consistent with published calculations of the density of unoccupied p symmetry states. Better agreement is obtained with calculations for the ground state of the system than with ones for the excited state. Valence band photoemission spectra were measured at photon energies corresponding to core resonances, but, within the signal to noise level of the spectra, no resonant enhancement was observed. This is consistent with the delocalized nature of the valence band.</description><subject>Clean metal, semiconductor, and insulator surfaces</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Electron and ion emission by liquids and solids; impact phenomena</subject><subject>Exact sciences and technology</subject><subject>Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation</subject><subject>Optical properties of bulk materials and thin films</subject><subject>Photoemission and photoelectron spectra</subject><subject>Physics</subject><subject>Properties of type I and type II superconductors</subject><subject>Response to electromagnetic fields (nuclear magnetic resonance, surface impedance, etc.)</subject><subject>Superconductivity</subject><issn>0953-8984</issn><issn>1361-648X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNqNkNFKwzAUhoMoOqevMHIjXtWd5KRteilDnTjRCwXvQpqks7I2tekufHtbNoegoBAIHL7_P4ePkAmDCwZSTiGLMZKZFFPOpgL6F6fA9siIYcKiRMiXfTLaQUfkOIQ3ABASxSE54kwiF5yNyPzx1Xde58G3TVf6mura0maYuaoMYZj4glZ6WbtQritqy9y3pXVUd7R7dfR-Se-os0t3Qg4KvQrudPuPyfP11dNsHi0ebm5nl4vIiJh3USaSjANYzCXaQvIMJYdYI89NorUruDEyEQkUWsfOZZixFK2RkAuMUeQcx-R809u0_n3tQqf6O41brXTt_DooKRFBsiT7k0wFYgopw55MNqRpfQitK1TTlpVuPxQDNehWg0k1mFScKQFqo7sPTrYr1nnl7C725bcHzraADkavilbXpgzfuL4y7rvHhG240jf_Xx79zPzOqsYW-AmdOKKZ</recordid><startdate>20091007</startdate><enddate>20091007</enddate><creator>Prince, K C</creator><creator>Feyer, V</creator><creator>Tadich, A</creator><creator>Thomsen, L</creator><creator>Cowie, B C C</creator><general>IOP Publishing</general><general>Institute of Physics</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>7X8</scope></search><sort><creationdate>20091007</creationdate><title>Photoabsorption and photoemission of magnesium diboride at the Mg K edge</title><author>Prince, K C ; Feyer, V ; Tadich, A ; Thomsen, L ; Cowie, B C C</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c452t-9469200d3b83df82938205a32bc6aaef2cc86460faa5ee939173dc80b43534b23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Clean metal, semiconductor, and insulator surfaces</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Electron and ion emission by liquids and solids; impact phenomena</topic><topic>Exact sciences and technology</topic><topic>Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation</topic><topic>Optical properties of bulk materials and thin films</topic><topic>Photoemission and photoelectron spectra</topic><topic>Physics</topic><topic>Properties of type I and type II superconductors</topic><topic>Response to electromagnetic fields (nuclear magnetic resonance, surface impedance, etc.)</topic><topic>Superconductivity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Prince, K C</creatorcontrib><creatorcontrib>Feyer, V</creatorcontrib><creatorcontrib>Tadich, A</creatorcontrib><creatorcontrib>Thomsen, L</creatorcontrib><creatorcontrib>Cowie, B C C</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of physics. Condensed matter</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Prince, K C</au><au>Feyer, V</au><au>Tadich, A</au><au>Thomsen, L</au><au>Cowie, B C C</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Photoabsorption and photoemission of magnesium diboride at the Mg K edge</atitle><jtitle>Journal of physics. Condensed matter</jtitle><addtitle>J Phys Condens Matter</addtitle><date>2009-10-07</date><risdate>2009</risdate><volume>21</volume><issue>40</issue><spage>405701</spage><epage>405701 (6)</epage><pages>405701-405701 (6)</pages><issn>0953-8984</issn><eissn>1361-648X</eissn><coden>JCOMEL</coden><abstract>The Mg K edge photoabsorption spectrum and the B 1s, Mg 1s, Mg 2p and valence band photoemission spectra of polycrystalline magnesium diboride have been measured. The photoabsorption spectra of the diboride and the oxide, which is present as an impurity, were separated by measuring the Auger electron partial yield at electron energies characteristic of each phase. The spectra are consistent with published calculations of the density of unoccupied p symmetry states. Better agreement is obtained with calculations for the ground state of the system than with ones for the excited state. Valence band photoemission spectra were measured at photon energies corresponding to core resonances, but, within the signal to noise level of the spectra, no resonant enhancement was observed. This is consistent with the delocalized nature of the valence band.</abstract><cop>Bristol</cop><pub>IOP Publishing</pub><pmid>21832421</pmid><doi>10.1088/0953-8984/21/40/405701</doi><tpages>1</tpages></addata></record> |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Clean metal, semiconductor, and insulator surfaces Condensed matter: electronic structure, electrical, magnetic, and optical properties Electron and ion emission by liquids and solids impact phenomena Exact sciences and technology Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of bulk materials and thin films Photoemission and photoelectron spectra Physics Properties of type I and type II superconductors Response to electromagnetic fields (nuclear magnetic resonance, surface impedance, etc.) Superconductivity |
| title | Photoabsorption and photoemission of magnesium diboride at the Mg K edge |
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