Influence of alkylphosphonic acid grafting on the electronic and magnetic properties of La2/3Sr1/3MnO3 surfaces
•Probe the influence of alkylphosphonic acids-based SAMs on the electronic and magnetic properties of the LSMO.•Measure the modification of the Mn oxidation state of LSMO surface induced by the molecules grafting.•Evaluate the modification of the LSMO work function induced by the alkylphosphonic aci...
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| Veröffentlicht in: | Applied surface science 2015-10, Vol.353, p.24-28 |
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| creator | Galbiati, Marta Tatay, Sergio Delprat, Sophie Barraud, Clément Cros, Vincent Jacquet, Eric Coloma, Fernando Choueikani, Fadi Otero, Edwige Ohresser, Philippe Haag, Norman Cinchetti, Mirko Aeschlimann, Martin Seneor, Pierre Mattana, Richard Petroff, Frédéric |
| description | •Probe the influence of alkylphosphonic acids-based SAMs on the electronic and magnetic properties of the LSMO.•Measure the modification of the Mn oxidation state of LSMO surface induced by the molecules grafting.•Evaluate the modification of the LSMO work function induced by the alkylphosphonic acids molecules.
Self-assembled monolayers (SAMs) are highly promising materials for molecular engineering of electronic and spintronics devices thanks to their surface functionalization properties. In this direction, alkylphosphonic acids have been used to functionalize the most common ferromagnetic electrode in organic spintronics: La2/3Sr1/3MnO3 (LSMO). However, a study on the influence of SAMs grafting on LSMO electronic and magnetic properties is still missing. In this letter, we probe the influence of alkylphosphonic acids-based SAMs on the electronic and magnetic properties of the LSMO surface using different spectroscopies. We observe by X-ray photoemission and X-ray absorption that the grafting of the molecules on the LSMO surface induces a reduction of the Mn oxidation state. Ultraviolet photoelectron spectroscopy measurements also show that the LSMO work function can be modified by surface dipoles opening the door to both tune the charge and spin injection efficiencies in organic devices such as organic light-emitting diodes. |
| doi_str_mv | 10.1016/j.apsusc.2015.06.051 |
| format | Article |
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Self-assembled monolayers (SAMs) are highly promising materials for molecular engineering of electronic and spintronics devices thanks to their surface functionalization properties. In this direction, alkylphosphonic acids have been used to functionalize the most common ferromagnetic electrode in organic spintronics: La2/3Sr1/3MnO3 (LSMO). However, a study on the influence of SAMs grafting on LSMO electronic and magnetic properties is still missing. In this letter, we probe the influence of alkylphosphonic acids-based SAMs on the electronic and magnetic properties of the LSMO surface using different spectroscopies. We observe by X-ray photoemission and X-ray absorption that the grafting of the molecules on the LSMO surface induces a reduction of the Mn oxidation state. Ultraviolet photoelectron spectroscopy measurements also show that the LSMO work function can be modified by surface dipoles opening the door to both tune the charge and spin injection efficiencies in organic devices such as organic light-emitting diodes.</description><identifier>ISSN: 0169-4332</identifier><identifier>EISSN: 1873-5584</identifier><identifier>DOI: 10.1016/j.apsusc.2015.06.051</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Devices ; Electronics ; Ferromagnetism ; Grafting ; Magnetic properties ; Magnetism ; Self-assembled monolayers ; Spintronics ; Surface chemistry ; X-rays</subject><ispartof>Applied surface science, 2015-10, Vol.353, p.24-28</ispartof><rights>2015 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c381t-effd73bbe0b2226120fab67c83c2ec68fbf5bec0a78298f267f4b9f444b226e43</citedby><cites>FETCH-LOGICAL-c381t-effd73bbe0b2226120fab67c83c2ec68fbf5bec0a78298f267f4b9f444b226e43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.apsusc.2015.06.051$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Galbiati, Marta</creatorcontrib><creatorcontrib>Tatay, Sergio</creatorcontrib><creatorcontrib>Delprat, Sophie</creatorcontrib><creatorcontrib>Barraud, Clément</creatorcontrib><creatorcontrib>Cros, Vincent</creatorcontrib><creatorcontrib>Jacquet, Eric</creatorcontrib><creatorcontrib>Coloma, Fernando</creatorcontrib><creatorcontrib>Choueikani, Fadi</creatorcontrib><creatorcontrib>Otero, Edwige</creatorcontrib><creatorcontrib>Ohresser, Philippe</creatorcontrib><creatorcontrib>Haag, Norman</creatorcontrib><creatorcontrib>Cinchetti, Mirko</creatorcontrib><creatorcontrib>Aeschlimann, Martin</creatorcontrib><creatorcontrib>Seneor, Pierre</creatorcontrib><creatorcontrib>Mattana, Richard</creatorcontrib><creatorcontrib>Petroff, Frédéric</creatorcontrib><title>Influence of alkylphosphonic acid grafting on the electronic and magnetic properties of La2/3Sr1/3MnO3 surfaces</title><title>Applied surface science</title><description>•Probe the influence of alkylphosphonic acids-based SAMs on the electronic and magnetic properties of the LSMO.•Measure the modification of the Mn oxidation state of LSMO surface induced by the molecules grafting.•Evaluate the modification of the LSMO work function induced by the alkylphosphonic acids molecules.
Self-assembled monolayers (SAMs) are highly promising materials for molecular engineering of electronic and spintronics devices thanks to their surface functionalization properties. In this direction, alkylphosphonic acids have been used to functionalize the most common ferromagnetic electrode in organic spintronics: La2/3Sr1/3MnO3 (LSMO). However, a study on the influence of SAMs grafting on LSMO electronic and magnetic properties is still missing. In this letter, we probe the influence of alkylphosphonic acids-based SAMs on the electronic and magnetic properties of the LSMO surface using different spectroscopies. We observe by X-ray photoemission and X-ray absorption that the grafting of the molecules on the LSMO surface induces a reduction of the Mn oxidation state. Ultraviolet photoelectron spectroscopy measurements also show that the LSMO work function can be modified by surface dipoles opening the door to both tune the charge and spin injection efficiencies in organic devices such as organic light-emitting diodes.</description><subject>Devices</subject><subject>Electronics</subject><subject>Ferromagnetism</subject><subject>Grafting</subject><subject>Magnetic properties</subject><subject>Magnetism</subject><subject>Self-assembled monolayers</subject><subject>Spintronics</subject><subject>Surface chemistry</subject><subject>X-rays</subject><issn>0169-4332</issn><issn>1873-5584</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp9kMtOwzAQRS0EEqXwByy8ZJPUrzjpBgkhHpWKugDWluOMW5fUCXaC1L_HVVizGI1G987VzEHolpKcEioX-1z3cYwmZ4QWOZE5KegZmtGq5FlRVOIczZJtmQnO2SW6inFPCGVJnaFu5W07gjeAO4t1-3Vs-10XU3lnsDauwdug7eD8FnceDzvA0IIZwqT7Bh_01sOQhj50PYTBQTxFrTVb8PdAF_zNbziOY7DaQLxGF1a3EW7--hx9Pj99PL5m683L6vFhnRle0SEDa5uS1zWQmjEmKSNW17I0FTcMjKxsbYsaDNFlxZaVZbK0ol5aIUTySxB8ju6m3HTV9whxUAcXDbSt9tCNUdGyrAgjnPFkFZPVhC7GAFb1wR10OCpK1Imv2quJrzrxVUSqxDet3U9rkN74cRBUNO4EsnEhAVJN5_4P-AWV0ocl</recordid><startdate>20151001</startdate><enddate>20151001</enddate><creator>Galbiati, Marta</creator><creator>Tatay, Sergio</creator><creator>Delprat, Sophie</creator><creator>Barraud, Clément</creator><creator>Cros, Vincent</creator><creator>Jacquet, Eric</creator><creator>Coloma, Fernando</creator><creator>Choueikani, Fadi</creator><creator>Otero, Edwige</creator><creator>Ohresser, Philippe</creator><creator>Haag, Norman</creator><creator>Cinchetti, Mirko</creator><creator>Aeschlimann, Martin</creator><creator>Seneor, Pierre</creator><creator>Mattana, Richard</creator><creator>Petroff, Frédéric</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20151001</creationdate><title>Influence of alkylphosphonic acid grafting on the electronic and magnetic properties of La2/3Sr1/3MnO3 surfaces</title><author>Galbiati, Marta ; 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Self-assembled monolayers (SAMs) are highly promising materials for molecular engineering of electronic and spintronics devices thanks to their surface functionalization properties. In this direction, alkylphosphonic acids have been used to functionalize the most common ferromagnetic electrode in organic spintronics: La2/3Sr1/3MnO3 (LSMO). However, a study on the influence of SAMs grafting on LSMO electronic and magnetic properties is still missing. In this letter, we probe the influence of alkylphosphonic acids-based SAMs on the electronic and magnetic properties of the LSMO surface using different spectroscopies. We observe by X-ray photoemission and X-ray absorption that the grafting of the molecules on the LSMO surface induces a reduction of the Mn oxidation state. Ultraviolet photoelectron spectroscopy measurements also show that the LSMO work function can be modified by surface dipoles opening the door to both tune the charge and spin injection efficiencies in organic devices such as organic light-emitting diodes.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.apsusc.2015.06.051</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Devices Electronics Ferromagnetism Grafting Magnetic properties Magnetism Self-assembled monolayers Spintronics Surface chemistry X-rays |
| title | Influence of alkylphosphonic acid grafting on the electronic and magnetic properties of La2/3Sr1/3MnO3 surfaces |
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