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Effects of Dirac cone tilt in a two-dimensional Dirac semimetal
Yang, Zhao-Kun1; Wang, Jing-Rong2; Liu, Guo-Zhu1
2018-11-19
Source PublicationPHYSICAL REVIEW B
ISSN2469-9950
Volume98Issue:19Pages:20
Corresponding AuthorLiu, Guo-Zhu(gzliu@ustc.edu.cn)
AbstractA two-dimensional Dirac semimetal with tilted Dirac cone has recently attracted increasing interest. The tilt of Dirac cone can be realized in a number of materials, including deformed graphene, surface state of topological crystalline insulator, and certain organic compounds. We study how Dirac cone tilting affects the low-energy properties by presenting a renormalization group analysis of the Coulomb interaction and quenched disorder. A random scalar potential or random vector potential along the tilting direction cannot exist on its own as it always dynamically generates a new type of disorder, which dominates at low energies and turns the system into a compressible diffusive metal. Consequently, the fermions acquire a finite disorder scattering rate. Moreover, the isolated band-touching point is replaced by a bulk Fermi arc in the Brillouin zone. These results are not qualitatively changed when the Coulomb interaction is incorporated. In comparison, random mass and random vector potential along the nontilting direction can exist individually, without generating other types of disorder. They both suppress tilt at low energies, and do not produce bulk Fermi arc. Upon taking the Coulomb interaction into account, the system enters into a stable quantum critical state, in which the fermion field acquires a finite anomalous dimension but the dynamical exponent z = 1. These results indicate that Dirac cone tilt does lead to some qualitatively different low-energy properties compared to the untilted system.
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province
DOI10.1103/PhysRevB.98.195123
WOS KeywordTOPOLOGICAL PHASE-TRANSITIONS ; HALL CRITICAL-POINTS ; WEYL SEMIMETALS ; QUANTUM CRITICALITY ; SUSPENDED GRAPHENE ; FERMIONS ; INSULATORS ; SYSTEMS
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[11574285] ; National Natural Science Foundation of China[11504379] ; Fundamental Research Funds for the Central Universities (P. R. China)[WK2030040085] ; Natural Science Foundation of Anhui Province[1608085MA19]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Fundamental Research Funds for the Central Universities (P. R. China) ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Province
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000450547800001
PublisherAMER PHYSICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/34388
Collection中科院强磁场科学中心
Corresponding AuthorLiu, Guo-Zhu
Affiliation1.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, High Magnet Field Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230031, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Yang, Zhao-Kun,Wang, Jing-Rong,Liu, Guo-Zhu. Effects of Dirac cone tilt in a two-dimensional Dirac semimetal[J]. PHYSICAL REVIEW B,2018,98(19):20.
APA Yang, Zhao-Kun,Wang, Jing-Rong,&Liu, Guo-Zhu.(2018).Effects of Dirac cone tilt in a two-dimensional Dirac semimetal.PHYSICAL REVIEW B,98(19),20.
MLA Yang, Zhao-Kun,et al."Effects of Dirac cone tilt in a two-dimensional Dirac semimetal".PHYSICAL REVIEW B 98.19(2018):20.
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