Increased muon field at surface and substrate interface of palladium thin films
We performed depth-dependent low-energy muon spin spectroscopy (\(\mu\)SR) studies on three palladium 100 nm thin films, both undoped and doped with 170 ppm of iron. Muons implanted in the surface and substrate interface region probe an increased local magnetic field compared to the inner part of th...
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| Veröffentlicht in: | arXiv.org 2022-09 |
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| creator | Welker, Gesa de Wit, Martin Oosterkamp, Tjerk H Mydosh, John A Suter, Andreas Prokscha, Thomas Bossoni, Lucia |
| description | We performed depth-dependent low-energy muon spin spectroscopy (\(\mu\)SR) studies on three palladium 100 nm thin films, both undoped and doped with 170 ppm of iron. Muons implanted in the surface and substrate interface region probe an increased local magnetic field compared to the inner part of the sample. The field increase extends over a few nanometers, it is temperature-independent (in the range of 3.7 - 100 K), stronger for the iron-doped samples and accompanied by an increase in local field inhomogeneity. We consider various potential origins for this magnetic surface state, such as adsorbents and supressed d-states. Our conclusion is that orbital moments induced at the surface / interface by localized spins and charges are the most likely explanation, potentially accompanied by magnetic moments due to crystal irregularities. |
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Muons implanted in the surface and substrate interface region probe an increased local magnetic field compared to the inner part of the sample. The field increase extends over a few nanometers, it is temperature-independent (in the range of 3.7 - 100 K), stronger for the iron-doped samples and accompanied by an increase in local field inhomogeneity. We consider various potential origins for this magnetic surface state, such as adsorbents and supressed d-states. Our conclusion is that orbital moments induced at the surface / interface by localized spins and charges are the most likely explanation, potentially accompanied by magnetic moments due to crystal irregularities.</description><identifier>EISSN: 2331-8422</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Inhomogeneity ; Iron ; Magnetic moments ; Magnetic properties ; Muons ; Palladium ; Substrates ; Thin films</subject><ispartof>arXiv.org, 2022-09</ispartof><rights>2022. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). 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Our conclusion is that orbital moments induced at the surface / interface by localized spins and charges are the most likely explanation, potentially accompanied by magnetic moments due to crystal irregularities.</description><subject>Inhomogeneity</subject><subject>Iron</subject><subject>Magnetic moments</subject><subject>Magnetic properties</subject><subject>Muons</subject><subject>Palladium</subject><subject>Substrates</subject><subject>Thin films</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNqNi8sKwjAURIMgWLT_EHBdyMNa96Loyo37cm1uMCVNa27y_1b0A1zNcObMghVKa1kddkqtWEnUCyHUvlF1rQt2u4YuIhAaPuQxcOvQGw6JU44WOuQQzNwflCIk5C4k_PLR8gm8B-PywNPTfa5-oA1bWvCE5S_XbHs-3Y-XaorjKyOlth9zDPPUqkZKKZpaa_2f9QYkOz6c</recordid><startdate>20220905</startdate><enddate>20220905</enddate><creator>Welker, Gesa</creator><creator>de Wit, Martin</creator><creator>Oosterkamp, Tjerk H</creator><creator>Mydosh, John A</creator><creator>Suter, Andreas</creator><creator>Prokscha, Thomas</creator><creator>Bossoni, Lucia</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope></search><sort><creationdate>20220905</creationdate><title>Increased muon field at surface and substrate interface of palladium thin films</title><author>Welker, Gesa ; de Wit, Martin ; Oosterkamp, Tjerk H ; Mydosh, John A ; Suter, Andreas ; Prokscha, Thomas ; Bossoni, Lucia</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_journals_27111075333</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Inhomogeneity</topic><topic>Iron</topic><topic>Magnetic moments</topic><topic>Magnetic properties</topic><topic>Muons</topic><topic>Palladium</topic><topic>Substrates</topic><topic>Thin films</topic><toplevel>online_resources</toplevel><creatorcontrib>Welker, Gesa</creatorcontrib><creatorcontrib>de Wit, Martin</creatorcontrib><creatorcontrib>Oosterkamp, Tjerk H</creatorcontrib><creatorcontrib>Mydosh, John A</creatorcontrib><creatorcontrib>Suter, Andreas</creatorcontrib><creatorcontrib>Prokscha, Thomas</creatorcontrib><creatorcontrib>Bossoni, Lucia</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Welker, Gesa</au><au>de Wit, Martin</au><au>Oosterkamp, Tjerk H</au><au>Mydosh, John A</au><au>Suter, Andreas</au><au>Prokscha, Thomas</au><au>Bossoni, Lucia</au><format>book</format><genre>document</genre><ristype>GEN</ristype><atitle>Increased muon field at surface and substrate interface of palladium thin films</atitle><jtitle>arXiv.org</jtitle><date>2022-09-05</date><risdate>2022</risdate><eissn>2331-8422</eissn><abstract>We performed depth-dependent low-energy muon spin spectroscopy (\(\mu\)SR) studies on three palladium 100 nm thin films, both undoped and doped with 170 ppm of iron. Muons implanted in the surface and substrate interface region probe an increased local magnetic field compared to the inner part of the sample. The field increase extends over a few nanometers, it is temperature-independent (in the range of 3.7 - 100 K), stronger for the iron-doped samples and accompanied by an increase in local field inhomogeneity. We consider various potential origins for this magnetic surface state, such as adsorbents and supressed d-states. Our conclusion is that orbital moments induced at the surface / interface by localized spins and charges are the most likely explanation, potentially accompanied by magnetic moments due to crystal irregularities.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><oa>free_for_read</oa></addata></record> |
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| subjects | Inhomogeneity Iron Magnetic moments Magnetic properties Muons Palladium Substrates Thin films |
| title | Increased muon field at surface and substrate interface of palladium thin films |
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