Quantum Tunneling in the α-T3 Model with an Effective Mass Term
We investigate the quantum tunneling properties through a square potential barrier in the α - T 3 model with an effective mass term. The additional mass term can be induced by the effective magnetic field or the site energy difference on different sublattices, in which the flat band is located at th...
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| Veröffentlicht in: | Journal of low temperature physics 2020, Vol.199 (5-6), p.1332-1343 |
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| container_end_page | 1343 |
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| container_issue | 5-6 |
| container_start_page | 1332 |
| container_title | Journal of low temperature physics |
| container_volume | 199 |
| creator | Ye, Xin Ke, Sha-Sha Du, Xin-Wei Guo, Yong Lü, Hai-Feng |
| description | We investigate the quantum tunneling properties through a square potential barrier in the
α
-
T
3
model with an effective mass term. The additional mass term can be induced by the effective magnetic field or the site energy difference on different sublattices, in which the flat band is located at the center or edge of the band gap band, respectively. The linear dispersion in the
α
-
T
3
model is modified in the presence of the mass term, leading to the destroying of the Klein tunneling for the normal incidence. It is demonstrated that the additional mass term in general suppresses the transmission. When the flat band is located at the band edge, the super-Klein tunneling and the resonant tunneling are considerably suppressed with the increase in the energy gap. For the dice lattice that
α
=
1
, the super-Klein tunneling is preserved when the flat band is located at the center of the band gap. |
| doi_str_mv | 10.1007/s10909-020-02440-3 |
| format | Article |
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α
-
T
3
model with an effective mass term. The additional mass term can be induced by the effective magnetic field or the site energy difference on different sublattices, in which the flat band is located at the center or edge of the band gap band, respectively. The linear dispersion in the
α
-
T
3
model is modified in the presence of the mass term, leading to the destroying of the Klein tunneling for the normal incidence. It is demonstrated that the additional mass term in general suppresses the transmission. When the flat band is located at the band edge, the super-Klein tunneling and the resonant tunneling are considerably suppressed with the increase in the energy gap. For the dice lattice that
α
=
1
, the super-Klein tunneling is preserved when the flat band is located at the center of the band gap.</description><identifier>ISSN: 0022-2291</identifier><identifier>EISSN: 1573-7357</identifier><identifier>DOI: 10.1007/s10909-020-02440-3</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Characterization and Evaluation of Materials ; Condensed Matter Physics ; Energy gap ; Low temperature physics ; Magnetic Materials ; Magnetism ; Physics ; Physics and Astronomy ; Potential barriers ; Quantum tunnelling ; Resonant tunneling</subject><ispartof>Journal of low temperature physics, 2020, Vol.199 (5-6), p.1332-1343</ispartof><rights>Springer Science+Business Media, LLC, part of Springer Nature 2020</rights><rights>Springer Science+Business Media, LLC, part of Springer Nature 2020.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10909-020-02440-3$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10909-020-02440-3$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27923,27924,41487,42556,51318</link.rule.ids></links><search><creatorcontrib>Ye, Xin</creatorcontrib><creatorcontrib>Ke, Sha-Sha</creatorcontrib><creatorcontrib>Du, Xin-Wei</creatorcontrib><creatorcontrib>Guo, Yong</creatorcontrib><creatorcontrib>Lü, Hai-Feng</creatorcontrib><title>Quantum Tunneling in the α-T3 Model with an Effective Mass Term</title><title>Journal of low temperature physics</title><addtitle>J Low Temp Phys</addtitle><description>We investigate the quantum tunneling properties through a square potential barrier in the
α
-
T
3
model with an effective mass term. The additional mass term can be induced by the effective magnetic field or the site energy difference on different sublattices, in which the flat band is located at the center or edge of the band gap band, respectively. The linear dispersion in the
α
-
T
3
model is modified in the presence of the mass term, leading to the destroying of the Klein tunneling for the normal incidence. It is demonstrated that the additional mass term in general suppresses the transmission. When the flat band is located at the band edge, the super-Klein tunneling and the resonant tunneling are considerably suppressed with the increase in the energy gap. For the dice lattice that
α
=
1
, the super-Klein tunneling is preserved when the flat band is located at the center of the band gap.</description><subject>Characterization and Evaluation of Materials</subject><subject>Condensed Matter Physics</subject><subject>Energy gap</subject><subject>Low temperature physics</subject><subject>Magnetic Materials</subject><subject>Magnetism</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Potential barriers</subject><subject>Quantum tunnelling</subject><subject>Resonant tunneling</subject><issn>0022-2291</issn><issn>1573-7357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNpFkMFOwzAMhiMEEmPwApwicQ44cdO0N9A0BtImhFTOUda4rNOWjaaF5-JFeCYCQ-Jg-eBPtv-PsUsJ1xLA3EQJJZQCFKTKMhB4xEZSGxQGtTlmIwClhFKlPGVnMa4BoCxyHLHb58GFftjyagiBNm145W3g_Yr416eokC92njb8o-1X3AU-bRqq-_ad-MLFyCvqtufspHGbSBd_fcxe7qfV5EHMn2aPk7u52MtMoUAqCIlqIHKkvSxq7wtslJMujZZ5o7w2y0xj-suVRQO-xlpJAx6WOs81jtnVYe--270NFHu73g1dSCetygC0yXNTJgoPVNx3KQt1_5QE-6PKHlTZpMr-qrKI3-KqWz8</recordid><startdate>2020</startdate><enddate>2020</enddate><creator>Ye, Xin</creator><creator>Ke, Sha-Sha</creator><creator>Du, Xin-Wei</creator><creator>Guo, Yong</creator><creator>Lü, Hai-Feng</creator><general>Springer US</general><general>Springer Nature B.V</general><scope/></search><sort><creationdate>2020</creationdate><title>Quantum Tunneling in the α-T3 Model with an Effective Mass Term</title><author>Ye, Xin ; Ke, Sha-Sha ; Du, Xin-Wei ; Guo, Yong ; Lü, Hai-Feng</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p1423-3e8e3eec0eeae5d18cdd83f2a1a3e8b6f2d57b453098a98f0dc3c2170d0b56653</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Characterization and Evaluation of Materials</topic><topic>Condensed Matter Physics</topic><topic>Energy gap</topic><topic>Low temperature physics</topic><topic>Magnetic Materials</topic><topic>Magnetism</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Potential barriers</topic><topic>Quantum tunnelling</topic><topic>Resonant tunneling</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ye, Xin</creatorcontrib><creatorcontrib>Ke, Sha-Sha</creatorcontrib><creatorcontrib>Du, Xin-Wei</creatorcontrib><creatorcontrib>Guo, Yong</creatorcontrib><creatorcontrib>Lü, Hai-Feng</creatorcontrib><jtitle>Journal of low temperature physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ye, Xin</au><au>Ke, Sha-Sha</au><au>Du, Xin-Wei</au><au>Guo, Yong</au><au>Lü, Hai-Feng</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quantum Tunneling in the α-T3 Model with an Effective Mass Term</atitle><jtitle>Journal of low temperature physics</jtitle><stitle>J Low Temp Phys</stitle><date>2020</date><risdate>2020</risdate><volume>199</volume><issue>5-6</issue><spage>1332</spage><epage>1343</epage><pages>1332-1343</pages><issn>0022-2291</issn><eissn>1573-7357</eissn><abstract>We investigate the quantum tunneling properties through a square potential barrier in the
α
-
T
3
model with an effective mass term. The additional mass term can be induced by the effective magnetic field or the site energy difference on different sublattices, in which the flat band is located at the center or edge of the band gap band, respectively. The linear dispersion in the
α
-
T
3
model is modified in the presence of the mass term, leading to the destroying of the Klein tunneling for the normal incidence. It is demonstrated that the additional mass term in general suppresses the transmission. When the flat band is located at the band edge, the super-Klein tunneling and the resonant tunneling are considerably suppressed with the increase in the energy gap. For the dice lattice that
α
=
1
, the super-Klein tunneling is preserved when the flat band is located at the center of the band gap.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s10909-020-02440-3</doi><tpages>12</tpages></addata></record> |
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| ispartof | Journal of low temperature physics, 2020, Vol.199 (5-6), p.1332-1343 |
| issn | 0022-2291 1573-7357 |
| language | eng |
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| source | SpringerLink Journals - AutoHoldings |
| subjects | Characterization and Evaluation of Materials Condensed Matter Physics Energy gap Low temperature physics Magnetic Materials Magnetism Physics Physics and Astronomy Potential barriers Quantum tunnelling Resonant tunneling |
| title | Quantum Tunneling in the α-T3 Model with an Effective Mass Term |
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