Normal-state negative longitudinal magnetoresistance and Dirac-cone-like dispersion in PtPb4 single crystals: a potential Weyl-semimetal superconductor candidate
Magnetotransport measurements of PtPb _4 single crystals with the T _c of ∼2.80 K reveal pronounced exotic topological nature. An anomalous negative longitudinal magnetoresistance (MR) related to the chiral anomaly and a linear-like transverse MR examined within the framework of quantum MR theory we...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ac231b |
| _version_ | 1797750113995587584 |
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| author | Li-Min Wang Sheng-En Lin Dong Shen I-Nan Chen |
| author_facet | Li-Min Wang Sheng-En Lin Dong Shen I-Nan Chen |
| author_sort | Li-Min Wang |
| collection | DOAJ |
| description | Magnetotransport measurements of PtPb _4 single crystals with the T _c of ∼2.80 K reveal pronounced exotic topological nature. An anomalous negative longitudinal magnetoresistance (MR) related to the chiral anomaly and a linear-like transverse MR examined within the framework of quantum MR theory were studied. Results indicate the presence of chiral-anomaly-induced quantum transport associated with the Weyl states and show a Dirac-cone-like band dispersion in PtPb _4 . This work reveals the drastic impact of the concept that the surface electrons in a Weyl fermion state may dominate the normal-state magnetotransport in PtPb _4 , leading to the conclusion that PtPb _4 can be a Weyl-semimetal superconductor candidate. |
| first_indexed | 2024-03-12T16:27:58Z |
| format | Article |
| id | doaj.art-eb89c94897374bc6828cc7391bd42e91 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:27:58Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-eb89c94897374bc6828cc7391bd42e912023-08-08T15:38:57ZengIOP PublishingNew Journal of Physics1367-26302021-01-0123909303010.1088/1367-2630/ac231bNormal-state negative longitudinal magnetoresistance and Dirac-cone-like dispersion in PtPb4 single crystals: a potential Weyl-semimetal superconductor candidateLi-Min Wang0Sheng-En Lin1Dong Shen2I-Nan Chen3Department of Physics/Graduate Institute of Applied Physics, National Taiwan University , Taipei 10617, Taiwan, Republic of ChinaDepartment of Physics/Graduate Institute of Applied Physics, National Taiwan University , Taipei 10617, Taiwan, Republic of ChinaDepartment of Physics/Graduate Institute of Applied Physics, National Taiwan University , Taipei 10617, Taiwan, Republic of ChinaDepartment of Physics/Graduate Institute of Applied Physics, National Taiwan University , Taipei 10617, Taiwan, Republic of ChinaMagnetotransport measurements of PtPb _4 single crystals with the T _c of ∼2.80 K reveal pronounced exotic topological nature. An anomalous negative longitudinal magnetoresistance (MR) related to the chiral anomaly and a linear-like transverse MR examined within the framework of quantum MR theory were studied. Results indicate the presence of chiral-anomaly-induced quantum transport associated with the Weyl states and show a Dirac-cone-like band dispersion in PtPb _4 . This work reveals the drastic impact of the concept that the surface electrons in a Weyl fermion state may dominate the normal-state magnetotransport in PtPb _4 , leading to the conclusion that PtPb _4 can be a Weyl-semimetal superconductor candidate.https://doi.org/10.1088/1367-2630/ac231btopological superconductorWeyl semimetalchiral anomalyquantum magnetoresistance |
| spellingShingle | Li-Min Wang Sheng-En Lin Dong Shen I-Nan Chen Normal-state negative longitudinal magnetoresistance and Dirac-cone-like dispersion in PtPb4 single crystals: a potential Weyl-semimetal superconductor candidate New Journal of Physics topological superconductor Weyl semimetal chiral anomaly quantum magnetoresistance |
| title | Normal-state negative longitudinal magnetoresistance and Dirac-cone-like dispersion in PtPb4 single crystals: a potential Weyl-semimetal superconductor candidate |
| title_full | Normal-state negative longitudinal magnetoresistance and Dirac-cone-like dispersion in PtPb4 single crystals: a potential Weyl-semimetal superconductor candidate |
| title_fullStr | Normal-state negative longitudinal magnetoresistance and Dirac-cone-like dispersion in PtPb4 single crystals: a potential Weyl-semimetal superconductor candidate |
| title_full_unstemmed | Normal-state negative longitudinal magnetoresistance and Dirac-cone-like dispersion in PtPb4 single crystals: a potential Weyl-semimetal superconductor candidate |
| title_short | Normal-state negative longitudinal magnetoresistance and Dirac-cone-like dispersion in PtPb4 single crystals: a potential Weyl-semimetal superconductor candidate |
| title_sort | normal state negative longitudinal magnetoresistance and dirac cone like dispersion in ptpb4 single crystals a potential weyl semimetal superconductor candidate |
| topic | topological superconductor Weyl semimetal chiral anomaly quantum magnetoresistance |
| url | https://doi.org/10.1088/1367-2630/ac231b |
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