Spin filtering in a double quantum dot device: Numerical renormalization group study of the internal structure of the Kondo state
A double quantum dot device, connected to two channels that only interact through interdot Coulomb repulsion, is analyzed using the numerical renormalization group technique. Using a two-impurity Anderson model, and realistic parameter values [S. Amasha, A. J. Keller, I. G. Rau, A. Carmi, J. A. Kati...
Gespeichert in:
| Veröffentlicht in: | Applied physics letters 2014-03, Vol.104 (13) |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | 13 |
| container_start_page | |
| container_title | Applied physics letters |
| container_volume | 104 |
| creator | Vernek, E. Büsser, C. A. Anda, E. V. Feiguin, A. E. Martins, G. B. |
| description | A double quantum dot device, connected to two channels that only interact through interdot Coulomb repulsion, is analyzed using the numerical renormalization group technique. Using a two-impurity Anderson model, and realistic parameter values [S. Amasha, A. J. Keller, I. G. Rau, A. Carmi, J. A. Katine, H. Shtrikman, Y. Oreg, and D. Goldhaber-Gordon, Phys. Rev. Lett. 110, 046604 (2013)], it is shown that, by applying a moderate magnetic field and independently adjusting the gate potential of each quantum dot at half-filling, a spin-orbital SU(2) Kondo state can be achieved where the Kondo resonance originates from spatially separated parts of the device. Our results clearly link this spatial separation effect to currents with opposing spin polarizations in each channel, i.e., the device acts as a spin filter. In addition, an experimental probe of this polarization effect is suggested, pointing to the exciting possibility of experimentally probing the internal structure of an SU(2) Kondo state. |
| doi_str_mv | 10.1063/1.4870065 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_22261640</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2127687254</sourcerecordid><originalsourceid>FETCH-LOGICAL-c285t-16503c17552af9ebabe69b398afc1cedcd59f9eca2ae31cb4e0040d756c2d9ba3</originalsourceid><addsrcrecordid>eNpFkUlLBDEUhIMoOC4H_0HAk4fWLJ10tzcZ3FD0oJ5DOv3aydCTzGQR9OY_N6Li6VFVHwWPQuiIklNKJD-jp3XbECLFFppR0jQVp7TdRjNCCK9kJ-gu2otxWaRgnM_Q59PaOjzaKUGw7hUXofHgcz8B3mTtUl4VmfAAb9bAOX7IqwIaPeEAzoeVnuyHTtY7_Bp8XuOY8vCO_YjTAkpZaXWFjSlkk3KAv-TOu8EXWyc4QDujniIc_t599HJ1-Ty_qe4fr2_nF_eVYa1IFZWCcEMbIZgeO-h1D7Lredfq0VADgxlEV3yjmQZOTV8DITUZGiENG7pe8310_NPrY7IqGpvALIx3DkxSjDFJZU3-qXXwmwwxqaXP3z9ExShrZNswURfq5IcywccYYFTrYFc6vCtK1PcOiqrfHfgXEp98TA</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2127687254</pqid></control><display><type>article</type><title>Spin filtering in a double quantum dot device: Numerical renormalization group study of the internal structure of the Kondo state</title><source>AIP Journals Complete</source><source>Alma/SFX Local Collection</source><creator>Vernek, E. ; Büsser, C. A. ; Anda, E. V. ; Feiguin, A. E. ; Martins, G. B.</creator><creatorcontrib>Vernek, E. ; Büsser, C. A. ; Anda, E. V. ; Feiguin, A. E. ; Martins, G. B.</creatorcontrib><description>A double quantum dot device, connected to two channels that only interact through interdot Coulomb repulsion, is analyzed using the numerical renormalization group technique. Using a two-impurity Anderson model, and realistic parameter values [S. Amasha, A. J. Keller, I. G. Rau, A. Carmi, J. A. Katine, H. Shtrikman, Y. Oreg, and D. Goldhaber-Gordon, Phys. Rev. Lett. 110, 046604 (2013)], it is shown that, by applying a moderate magnetic field and independently adjusting the gate potential of each quantum dot at half-filling, a spin-orbital SU(2) Kondo state can be achieved where the Kondo resonance originates from spatially separated parts of the device. Our results clearly link this spatial separation effect to currents with opposing spin polarizations in each channel, i.e., the device acts as a spin filter. In addition, an experimental probe of this polarization effect is suggested, pointing to the exciting possibility of experimentally probing the internal structure of an SU(2) Kondo state.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/1.4870065</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; Filtration ; Magnetic resonance ; MATHEMATICAL MODELS ; MATHEMATICAL SOLUTIONS ; Orbital resonances (celestial mechanics) ; QUANTUM DOTS ; RENORMALIZATION ; SPIN</subject><ispartof>Applied physics letters, 2014-03, Vol.104 (13)</ispartof><rights>2014 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c285t-16503c17552af9ebabe69b398afc1cedcd59f9eca2ae31cb4e0040d756c2d9ba3</citedby><cites>FETCH-LOGICAL-c285t-16503c17552af9ebabe69b398afc1cedcd59f9eca2ae31cb4e0040d756c2d9ba3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,777,781,882,27905,27906</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/22261640$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Vernek, E.</creatorcontrib><creatorcontrib>Büsser, C. A.</creatorcontrib><creatorcontrib>Anda, E. V.</creatorcontrib><creatorcontrib>Feiguin, A. E.</creatorcontrib><creatorcontrib>Martins, G. B.</creatorcontrib><title>Spin filtering in a double quantum dot device: Numerical renormalization group study of the internal structure of the Kondo state</title><title>Applied physics letters</title><description>A double quantum dot device, connected to two channels that only interact through interdot Coulomb repulsion, is analyzed using the numerical renormalization group technique. Using a two-impurity Anderson model, and realistic parameter values [S. Amasha, A. J. Keller, I. G. Rau, A. Carmi, J. A. Katine, H. Shtrikman, Y. Oreg, and D. Goldhaber-Gordon, Phys. Rev. Lett. 110, 046604 (2013)], it is shown that, by applying a moderate magnetic field and independently adjusting the gate potential of each quantum dot at half-filling, a spin-orbital SU(2) Kondo state can be achieved where the Kondo resonance originates from spatially separated parts of the device. Our results clearly link this spatial separation effect to currents with opposing spin polarizations in each channel, i.e., the device acts as a spin filter. In addition, an experimental probe of this polarization effect is suggested, pointing to the exciting possibility of experimentally probing the internal structure of an SU(2) Kondo state.</description><subject>Applied physics</subject><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>Filtration</subject><subject>Magnetic resonance</subject><subject>MATHEMATICAL MODELS</subject><subject>MATHEMATICAL SOLUTIONS</subject><subject>Orbital resonances (celestial mechanics)</subject><subject>QUANTUM DOTS</subject><subject>RENORMALIZATION</subject><subject>SPIN</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNpFkUlLBDEUhIMoOC4H_0HAk4fWLJ10tzcZ3FD0oJ5DOv3aydCTzGQR9OY_N6Li6VFVHwWPQuiIklNKJD-jp3XbECLFFppR0jQVp7TdRjNCCK9kJ-gu2otxWaRgnM_Q59PaOjzaKUGw7hUXofHgcz8B3mTtUl4VmfAAb9bAOX7IqwIaPeEAzoeVnuyHTtY7_Bp8XuOY8vCO_YjTAkpZaXWFjSlkk3KAv-TOu8EXWyc4QDujniIc_t599HJ1-Ty_qe4fr2_nF_eVYa1IFZWCcEMbIZgeO-h1D7Lredfq0VADgxlEV3yjmQZOTV8DITUZGiENG7pe8310_NPrY7IqGpvALIx3DkxSjDFJZU3-qXXwmwwxqaXP3z9ExShrZNswURfq5IcywccYYFTrYFc6vCtK1PcOiqrfHfgXEp98TA</recordid><startdate>20140331</startdate><enddate>20140331</enddate><creator>Vernek, E.</creator><creator>Büsser, C. A.</creator><creator>Anda, E. V.</creator><creator>Feiguin, A. E.</creator><creator>Martins, G. B.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20140331</creationdate><title>Spin filtering in a double quantum dot device: Numerical renormalization group study of the internal structure of the Kondo state</title><author>Vernek, E. ; Büsser, C. A. ; Anda, E. V. ; Feiguin, A. E. ; Martins, G. B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c285t-16503c17552af9ebabe69b398afc1cedcd59f9eca2ae31cb4e0040d756c2d9ba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Applied physics</topic><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>Filtration</topic><topic>Magnetic resonance</topic><topic>MATHEMATICAL MODELS</topic><topic>MATHEMATICAL SOLUTIONS</topic><topic>Orbital resonances (celestial mechanics)</topic><topic>QUANTUM DOTS</topic><topic>RENORMALIZATION</topic><topic>SPIN</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Vernek, E.</creatorcontrib><creatorcontrib>Büsser, C. A.</creatorcontrib><creatorcontrib>Anda, E. V.</creatorcontrib><creatorcontrib>Feiguin, A. E.</creatorcontrib><creatorcontrib>Martins, G. B.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Vernek, E.</au><au>Büsser, C. A.</au><au>Anda, E. V.</au><au>Feiguin, A. E.</au><au>Martins, G. B.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spin filtering in a double quantum dot device: Numerical renormalization group study of the internal structure of the Kondo state</atitle><jtitle>Applied physics letters</jtitle><date>2014-03-31</date><risdate>2014</risdate><volume>104</volume><issue>13</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><abstract>A double quantum dot device, connected to two channels that only interact through interdot Coulomb repulsion, is analyzed using the numerical renormalization group technique. Using a two-impurity Anderson model, and realistic parameter values [S. Amasha, A. J. Keller, I. G. Rau, A. Carmi, J. A. Katine, H. Shtrikman, Y. Oreg, and D. Goldhaber-Gordon, Phys. Rev. Lett. 110, 046604 (2013)], it is shown that, by applying a moderate magnetic field and independently adjusting the gate potential of each quantum dot at half-filling, a spin-orbital SU(2) Kondo state can be achieved where the Kondo resonance originates from spatially separated parts of the device. Our results clearly link this spatial separation effect to currents with opposing spin polarizations in each channel, i.e., the device acts as a spin filter. In addition, an experimental probe of this polarization effect is suggested, pointing to the exciting possibility of experimentally probing the internal structure of an SU(2) Kondo state.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4870065</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0003-6951 |
| ispartof | Applied physics letters, 2014-03, Vol.104 (13) |
| issn | 0003-6951 1077-3118 |
| language | eng |
| recordid | cdi_osti_scitechconnect_22261640 |
| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Applied physics CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Filtration Magnetic resonance MATHEMATICAL MODELS MATHEMATICAL SOLUTIONS Orbital resonances (celestial mechanics) QUANTUM DOTS RENORMALIZATION SPIN |
| title | Spin filtering in a double quantum dot device: Numerical renormalization group study of the internal structure of the Kondo state |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-20T12%3A43%3A20IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Spin%20filtering%20in%20a%20double%20quantum%20dot%20device:%20Numerical%20renormalization%20group%20study%20of%20the%20internal%20structure%20of%20the%20Kondo%20state&rft.jtitle=Applied%20physics%20letters&rft.au=Vernek,%20E.&rft.date=2014-03-31&rft.volume=104&rft.issue=13&rft.issn=0003-6951&rft.eissn=1077-3118&rft_id=info:doi/10.1063/1.4870065&rft_dat=%3Cproquest_osti_%3E2127687254%3C/proquest_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2127687254&rft_id=info:pmid/&rfr_iscdi=true |