Unusual angular dependence of tunneling magneto-Seebeck effect
We find an unusual angular dependence of the tunneling magneto-Seebeck effect (TMS). The conductance shows normally a cosine-dependence with the angle between the magnetizations of the two ferromagnetic leads. In contrast, the angular dependence of the TMS depends strongly on the tunneling magneto r...
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| Veröffentlicht in: | AIP advances 2018-11, Vol.8 (11), p.115114-115114-6 |
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| container_end_page | 115114-6 |
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| container_title | AIP advances |
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| creator | Heiliger, Christian Czerner, Michael Liebing, Niklas Serrano-Guisan, Santiago Rott, Karsten Reiss, Günter Schumacher, Hans W. |
| description | We find an unusual angular dependence of the tunneling magneto-Seebeck effect (TMS). The conductance shows normally a cosine-dependence with the angle between the magnetizations of the two ferromagnetic leads. In contrast, the angular dependence of the TMS depends strongly on the tunneling magneto resistance (TMR) ratio. For small TMR ratios we obtain also a cosine-dependence whereas for very large TMR ratios the angular dependence approaches a step-like function. The origin is that the cosine-dependent transmission function enters in the denominator of the definition of the Seebeck coefficient. Although the TMR and TMS are disconnected with respect to their magnitude the size of the TMR effect can be deducted from the angular dependence of the TMS effect. |
| doi_str_mv | 10.1063/1.5042014 |
| format | Article |
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The conductance shows normally a cosine-dependence with the angle between the magnetizations of the two ferromagnetic leads. In contrast, the angular dependence of the TMS depends strongly on the tunneling magneto resistance (TMR) ratio. For small TMR ratios we obtain also a cosine-dependence whereas for very large TMR ratios the angular dependence approaches a step-like function. The origin is that the cosine-dependent transmission function enters in the denominator of the definition of the Seebeck coefficient. 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The conductance shows normally a cosine-dependence with the angle between the magnetizations of the two ferromagnetic leads. In contrast, the angular dependence of the TMS depends strongly on the tunneling magneto resistance (TMR) ratio. For small TMR ratios we obtain also a cosine-dependence whereas for very large TMR ratios the angular dependence approaches a step-like function. The origin is that the cosine-dependent transmission function enters in the denominator of the definition of the Seebeck coefficient. Although the TMR and TMS are disconnected with respect to their magnitude the size of the TMR effect can be deducted from the angular dependence of the TMS effect.</description><subject>Dependence</subject><subject>Ferromagnetism</subject><subject>Resistance</subject><subject>Seebeck effect</subject><subject>Trigonometric functions</subject><issn>2158-3226</issn><issn>2158-3226</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>DOA</sourceid><recordid>eNp9kE1Lw0AQhoMoWGoP_oOAJ4XU_cpmcxGk-FEoeNCel8nubElNd-smEfz3RluqIDiXGYaHZ4Y3Sc4pmVIi-TWd5kQwQsVRMmI0VxlnTB7_mk-TSduuyVCipESJUXKz9H3bQ5OCX_UNxNTiFr1FbzANLu1677Gp_SrdwMpjF7JnxArNa4rOoenOkhMHTYuTfR8ny_u7l9ljtnh6mM9uF5kRTHWZK2Rhc1dxxY3h3FpVCuUoqZhUoAhwyKvKMmWBUVtSidYWzpAKBVipFPBxMt95bYC13sZ6A_FDB6j19yLElYbY1aZBDS5njEJRSCoFc0QxyUXpDEpaMC7l4LrYubYxvPXYdnod-uiH9zWjnEhSqpwP1OWOMjG0bUR3uEqJ_kpbU71Pe2Cvdmxr6g66OvgD_B7iD6i31v0H_zV_Au6Wi4c</recordid><startdate>201811</startdate><enddate>201811</enddate><creator>Heiliger, Christian</creator><creator>Czerner, Michael</creator><creator>Liebing, Niklas</creator><creator>Serrano-Guisan, Santiago</creator><creator>Rott, Karsten</creator><creator>Reiss, Günter</creator><creator>Schumacher, Hans W.</creator><general>American Institute of Physics</general><general>AIP Publishing LLC</general><scope>AJDQP</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>DOA</scope></search><sort><creationdate>201811</creationdate><title>Unusual angular dependence of tunneling magneto-Seebeck effect</title><author>Heiliger, Christian ; Czerner, Michael ; Liebing, Niklas ; Serrano-Guisan, Santiago ; Rott, Karsten ; Reiss, Günter ; Schumacher, Hans W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c428t-f767d5fb383cc33dd8948f10b268a80a3a5bbd28da21d916edd7fc0be4ad688a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Dependence</topic><topic>Ferromagnetism</topic><topic>Resistance</topic><topic>Seebeck effect</topic><topic>Trigonometric functions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Heiliger, Christian</creatorcontrib><creatorcontrib>Czerner, Michael</creatorcontrib><creatorcontrib>Liebing, Niklas</creatorcontrib><creatorcontrib>Serrano-Guisan, Santiago</creatorcontrib><creatorcontrib>Rott, Karsten</creatorcontrib><creatorcontrib>Reiss, Günter</creatorcontrib><creatorcontrib>Schumacher, Hans W.</creatorcontrib><collection>AIP Open Access Journals</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>AIP advances</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Heiliger, Christian</au><au>Czerner, Michael</au><au>Liebing, Niklas</au><au>Serrano-Guisan, Santiago</au><au>Rott, Karsten</au><au>Reiss, Günter</au><au>Schumacher, Hans W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Unusual angular dependence of tunneling magneto-Seebeck effect</atitle><jtitle>AIP advances</jtitle><date>2018-11</date><risdate>2018</risdate><volume>8</volume><issue>11</issue><spage>115114</spage><epage>115114-6</epage><pages>115114-115114-6</pages><issn>2158-3226</issn><eissn>2158-3226</eissn><coden>AAIDBI</coden><abstract>We find an unusual angular dependence of the tunneling magneto-Seebeck effect (TMS). The conductance shows normally a cosine-dependence with the angle between the magnetizations of the two ferromagnetic leads. In contrast, the angular dependence of the TMS depends strongly on the tunneling magneto resistance (TMR) ratio. For small TMR ratios we obtain also a cosine-dependence whereas for very large TMR ratios the angular dependence approaches a step-like function. The origin is that the cosine-dependent transmission function enters in the denominator of the definition of the Seebeck coefficient. Although the TMR and TMS are disconnected with respect to their magnitude the size of the TMR effect can be deducted from the angular dependence of the TMS effect.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.5042014</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Dependence Ferromagnetism Resistance Seebeck effect Trigonometric functions |
| title | Unusual angular dependence of tunneling magneto-Seebeck effect |
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