Evidence for pressure-induced node-pair annihilation in Cd3As2
We report a magnetotransport study of Dirac semimetal Cd3As2 under high pressure. The Shubnikov–de Haas oscillations are measured at different pressures to reveal the evolution of the Fermi surface. A sudden change in the phase factor of the oscillations occurs at 1.3 GPa along with the unanticipate...
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| Veröffentlicht in: | Physical review. B 2017-10, Vol.96 (15) |
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| container_title | Physical review. B |
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| creator | Zhang, Cheng Sun, Jianping Liu, Fengliang Narayan, Awadhesh Li, Nana Yuan, Xiang Liu, Yanwen Dai, Jianhong Long, Youwen Uwatoko, Yoshiya Shen, Jian Sanvito, Stefano Yang, Wenge Cheng, Jinguang Xiu, Faxian |
| description | We report a magnetotransport study of Dirac semimetal Cd3As2 under high pressure. The Shubnikov–de Haas oscillations are measured at different pressures to reveal the evolution of the Fermi surface. A sudden change in the phase factor of the oscillations occurs at 1.3 GPa along with the unanticipated shrinkage of the Fermi surface, which is well below the structure transition point from the tetragonal to the monoclinic structure (∼2.5GPa). High-pressure x-ray diffraction also reveals an anisotropic compression of the Cd3As2 lattice around a similar pressure. Through the first-principles calculations, we find that such axial compression along the c direction will shift the Dirac nodes towards the Brillouin zone center and will eventually introduce a finite energy gap. Our result unveils a possible topological phase transition in pressurized Cd3As2 without structure transition. |
| doi_str_mv | 10.1103/PhysRevB.96.155205 |
| format | Article |
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The Shubnikov–de Haas oscillations are measured at different pressures to reveal the evolution of the Fermi surface. A sudden change in the phase factor of the oscillations occurs at 1.3 GPa along with the unanticipated shrinkage of the Fermi surface, which is well below the structure transition point from the tetragonal to the monoclinic structure (∼2.5GPa). High-pressure x-ray diffraction also reveals an anisotropic compression of the Cd3As2 lattice around a similar pressure. Through the first-principles calculations, we find that such axial compression along the c direction will shift the Dirac nodes towards the Brillouin zone center and will eventually introduce a finite energy gap. 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Our result unveils a possible topological phase transition in pressurized Cd3As2 without structure transition.</description><subject>Brillouin zones</subject><subject>Energy gap</subject><subject>Fermi surfaces</subject><subject>First principles</subject><subject>Oscillations</subject><subject>Phase transitions</subject><subject>Shrinkage</subject><subject>X-ray diffraction</subject><issn>2469-9950</issn><issn>2469-9969</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNo9jU1LAzEUAIMoWGr_gKeA56x5eZus7yLUUj-goIieS7LJ0pSSXZPdgv_eguJp5jTD2DXICkDi7dvuu7yH40NFpgKtldRnbKZqQ4LI0Pm_a3nJFqXspZRgJDWSZux-fYw-pDbwrs98yKGUKQcRk5_a4HnqfRCDjZnblOIuHuwY-8Rj4iuPy6Ku2EVnDyUs_jhnn4_rj9Wz2Lw-vayWGzEA4ChsrYyRCpU6jbExgL4FakBpo1F2Cu6cpmCsw9qRgc7VGn2jG0LtyWmHc3bz2x1y_zWFMm73_ZTTablVoBAaREn4A-edSpQ</recordid><startdate>20171015</startdate><enddate>20171015</enddate><creator>Zhang, Cheng</creator><creator>Sun, Jianping</creator><creator>Liu, Fengliang</creator><creator>Narayan, Awadhesh</creator><creator>Li, Nana</creator><creator>Yuan, Xiang</creator><creator>Liu, Yanwen</creator><creator>Dai, Jianhong</creator><creator>Long, Youwen</creator><creator>Uwatoko, Yoshiya</creator><creator>Shen, Jian</creator><creator>Sanvito, Stefano</creator><creator>Yang, Wenge</creator><creator>Cheng, Jinguang</creator><creator>Xiu, Faxian</creator><general>American Physical Society</general><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20171015</creationdate><title>Evidence for pressure-induced node-pair annihilation in Cd3As2</title><author>Zhang, Cheng ; Sun, Jianping ; Liu, Fengliang ; Narayan, Awadhesh ; Li, Nana ; Yuan, Xiang ; Liu, Yanwen ; Dai, Jianhong ; Long, Youwen ; Uwatoko, Yoshiya ; Shen, Jian ; Sanvito, Stefano ; Yang, Wenge ; Cheng, Jinguang ; Xiu, Faxian</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p113t-a42660232216037613dc1971256530f218b59e6ab34b961fb453d757935d9b5b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Brillouin zones</topic><topic>Energy gap</topic><topic>Fermi surfaces</topic><topic>First principles</topic><topic>Oscillations</topic><topic>Phase transitions</topic><topic>Shrinkage</topic><topic>X-ray diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Cheng</creatorcontrib><creatorcontrib>Sun, Jianping</creatorcontrib><creatorcontrib>Liu, Fengliang</creatorcontrib><creatorcontrib>Narayan, Awadhesh</creatorcontrib><creatorcontrib>Li, Nana</creatorcontrib><creatorcontrib>Yuan, Xiang</creatorcontrib><creatorcontrib>Liu, Yanwen</creatorcontrib><creatorcontrib>Dai, Jianhong</creatorcontrib><creatorcontrib>Long, Youwen</creatorcontrib><creatorcontrib>Uwatoko, Yoshiya</creatorcontrib><creatorcontrib>Shen, Jian</creatorcontrib><creatorcontrib>Sanvito, Stefano</creatorcontrib><creatorcontrib>Yang, Wenge</creatorcontrib><creatorcontrib>Cheng, Jinguang</creatorcontrib><creatorcontrib>Xiu, Faxian</creatorcontrib><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physical review. B</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Cheng</au><au>Sun, Jianping</au><au>Liu, Fengliang</au><au>Narayan, Awadhesh</au><au>Li, Nana</au><au>Yuan, Xiang</au><au>Liu, Yanwen</au><au>Dai, Jianhong</au><au>Long, Youwen</au><au>Uwatoko, Yoshiya</au><au>Shen, Jian</au><au>Sanvito, Stefano</au><au>Yang, Wenge</au><au>Cheng, Jinguang</au><au>Xiu, Faxian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Evidence for pressure-induced node-pair annihilation in Cd3As2</atitle><jtitle>Physical review. B</jtitle><date>2017-10-15</date><risdate>2017</risdate><volume>96</volume><issue>15</issue><issn>2469-9950</issn><eissn>2469-9969</eissn><abstract>We report a magnetotransport study of Dirac semimetal Cd3As2 under high pressure. The Shubnikov–de Haas oscillations are measured at different pressures to reveal the evolution of the Fermi surface. A sudden change in the phase factor of the oscillations occurs at 1.3 GPa along with the unanticipated shrinkage of the Fermi surface, which is well below the structure transition point from the tetragonal to the monoclinic structure (∼2.5GPa). High-pressure x-ray diffraction also reveals an anisotropic compression of the Cd3As2 lattice around a similar pressure. Through the first-principles calculations, we find that such axial compression along the c direction will shift the Dirac nodes towards the Brillouin zone center and will eventually introduce a finite energy gap. Our result unveils a possible topological phase transition in pressurized Cd3As2 without structure transition.</abstract><cop>College Park</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevB.96.155205</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Brillouin zones Energy gap Fermi surfaces First principles Oscillations Phase transitions Shrinkage X-ray diffraction |
| title | Evidence for pressure-induced node-pair annihilation in Cd3As2 |
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