Cyclotron resonance in the high mobility GaAs/AlGaAs 2D electron system over the microwave, mm-wave, and terahertz- bands
The reflected microwave power from the photo-excited high mobility GaAs/AlGaAs 2D device has been measured over the wide frequency band spanning from 30 to 330 GHz simultaneously along with diagonal magnetoresistance as a function of the magnetic field. Easily distinguishable resonances in the refle...
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| description | The reflected microwave power from the photo-excited high mobility GaAs/AlGaAs 2D device has been measured over the wide frequency band spanning from 30 to 330 GHz simultaneously along with diagonal magnetoresistance as a function of the magnetic field. Easily distinguishable resonances in the reflected power signal are observed at the same magnetic fields as a reduced amplitude in the Shubnikov-de Haas (SdH) oscillations of the diagonal magnetoresistance. The reflection resonances with concurrent amplitude reduction in SdH oscillations are correlated with cyclotron resonance induced by microwave, mm-wave, and terahertz photoexcitation. The magnetoplasma effect was also investigated. The results suggest a finite frequency zero-magnetic-field intercept, providing an estimate for the plasma frequency. The experimentally measured plasma frequency appears to be somewhat lower than the estimated plasma frequency for these Hall bars. The results, in sum, are consistent with an effective mass ratio of
m*/m
= 0.067, the standard value, even in these high mobility GaAs/AlGaAs devices, at very large filling factors. Preliminary findings from this article have been published as conference proceedings, see Kriisa, A.,
et al
.,
J. of Phys. Conf. Ser
.
864
, 012057 (2017). |
| doi_str_mv | 10.1038/s41598-019-39186-2 |
| format | Article |
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m*/m
= 0.067, the standard value, even in these high mobility GaAs/AlGaAs devices, at very large filling factors. Preliminary findings from this article have been published as conference proceedings, see Kriisa, A.,
et al
.,
J. of Phys. Conf. Ser
.
864
, 012057 (2017).</description><identifier>ISSN: 2045-2322</identifier><identifier>EISSN: 2045-2322</identifier><identifier>DOI: 10.1038/s41598-019-39186-2</identifier><identifier>PMID: 30787380</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>639/766/119/1000 ; 639/766/119/995 ; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ; Decomposition ; Electric fields ; Energy ; Equilibrium ; Humanities and Social Sciences ; Magnetic fields ; Mobility ; multidisciplinary ; Oscillations ; Physics ; Plasma ; Radiation ; Resonance ; Science ; Science & Technology - Other Topics ; Science (multidisciplinary)</subject><ispartof>Scientific reports, 2019-02, Vol.9 (1), p.2409-2409, Article 2409</ispartof><rights>The Author(s) 2019</rights><rights>This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c567t-ab7e2961217a6085e42bd72e8ef54b716e3c1c3754bfc63b63d4a628e942bfd23</citedby><cites>FETCH-LOGICAL-c567t-ab7e2961217a6085e42bd72e8ef54b716e3c1c3754bfc63b63d4a628e942bfd23</cites><orcidid>0000-0002-1867-9977 ; 0000-0002-8141-3768 ; 0000-0001-5821-1511 ; 0000000281413768 ; 0000000158211511 ; 0000000218679977</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6382766/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6382766/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,864,885,27924,27925,41120,42189,51576,53791,53793</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/30787380$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/servlets/purl/1610572$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Kriisa, A.</creatorcontrib><creatorcontrib>Samaraweera, R. L.</creatorcontrib><creatorcontrib>Heimbeck, M. S.</creatorcontrib><creatorcontrib>Everitt, H. O.</creatorcontrib><creatorcontrib>Reichl, C.</creatorcontrib><creatorcontrib>Wegscheider, W.</creatorcontrib><creatorcontrib>Mani, R. G.</creatorcontrib><creatorcontrib>Georgia State Univ., Atlanta, GA (United States)</creatorcontrib><title>Cyclotron resonance in the high mobility GaAs/AlGaAs 2D electron system over the microwave, mm-wave, and terahertz- bands</title><title>Scientific reports</title><addtitle>Sci Rep</addtitle><addtitle>Sci Rep</addtitle><description>The reflected microwave power from the photo-excited high mobility GaAs/AlGaAs 2D device has been measured over the wide frequency band spanning from 30 to 330 GHz simultaneously along with diagonal magnetoresistance as a function of the magnetic field. Easily distinguishable resonances in the reflected power signal are observed at the same magnetic fields as a reduced amplitude in the Shubnikov-de Haas (SdH) oscillations of the diagonal magnetoresistance. The reflection resonances with concurrent amplitude reduction in SdH oscillations are correlated with cyclotron resonance induced by microwave, mm-wave, and terahertz photoexcitation. The magnetoplasma effect was also investigated. The results suggest a finite frequency zero-magnetic-field intercept, providing an estimate for the plasma frequency. The experimentally measured plasma frequency appears to be somewhat lower than the estimated plasma frequency for these Hall bars. The results, in sum, are consistent with an effective mass ratio of
m*/m
= 0.067, the standard value, even in these high mobility GaAs/AlGaAs devices, at very large filling factors. Preliminary findings from this article have been published as conference proceedings, see Kriisa, A.,
et al
.,
J. of Phys. Conf. Ser
.
864
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L.</au><au>Heimbeck, M. S.</au><au>Everitt, H. O.</au><au>Reichl, C.</au><au>Wegscheider, W.</au><au>Mani, R. G.</au><aucorp>Georgia State Univ., Atlanta, GA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cyclotron resonance in the high mobility GaAs/AlGaAs 2D electron system over the microwave, mm-wave, and terahertz- bands</atitle><jtitle>Scientific reports</jtitle><stitle>Sci Rep</stitle><addtitle>Sci Rep</addtitle><date>2019-02-20</date><risdate>2019</risdate><volume>9</volume><issue>1</issue><spage>2409</spage><epage>2409</epage><pages>2409-2409</pages><artnum>2409</artnum><issn>2045-2322</issn><eissn>2045-2322</eissn><abstract>The reflected microwave power from the photo-excited high mobility GaAs/AlGaAs 2D device has been measured over the wide frequency band spanning from 30 to 330 GHz simultaneously along with diagonal magnetoresistance as a function of the magnetic field. Easily distinguishable resonances in the reflected power signal are observed at the same magnetic fields as a reduced amplitude in the Shubnikov-de Haas (SdH) oscillations of the diagonal magnetoresistance. The reflection resonances with concurrent amplitude reduction in SdH oscillations are correlated with cyclotron resonance induced by microwave, mm-wave, and terahertz photoexcitation. The magnetoplasma effect was also investigated. The results suggest a finite frequency zero-magnetic-field intercept, providing an estimate for the plasma frequency. The experimentally measured plasma frequency appears to be somewhat lower than the estimated plasma frequency for these Hall bars. The results, in sum, are consistent with an effective mass ratio of
m*/m
= 0.067, the standard value, even in these high mobility GaAs/AlGaAs devices, at very large filling factors. Preliminary findings from this article have been published as conference proceedings, see Kriisa, A.,
et al
.,
J. of Phys. Conf. Ser
.
864
, 012057 (2017).</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>30787380</pmid><doi>10.1038/s41598-019-39186-2</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0002-1867-9977</orcidid><orcidid>https://orcid.org/0000-0002-8141-3768</orcidid><orcidid>https://orcid.org/0000-0001-5821-1511</orcidid><orcidid>https://orcid.org/0000000281413768</orcidid><orcidid>https://orcid.org/0000000158211511</orcidid><orcidid>https://orcid.org/0000000218679977</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | 639/766/119/1000 639/766/119/995 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Decomposition Electric fields Energy Equilibrium Humanities and Social Sciences Magnetic fields Mobility multidisciplinary Oscillations Physics Plasma Radiation Resonance Science Science & Technology - Other Topics Science (multidisciplinary) |
| title | Cyclotron resonance in the high mobility GaAs/AlGaAs 2D electron system over the microwave, mm-wave, and terahertz- bands |
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