Gate-tuned Aharonov-Bohm interference of surface states in a quasiballistic Dirac semimetal nanowire

Lin, Ben-Chuan1; Wang, Shuo1; Wang, Li-Xian1; Li, Cai-Zhen1; Li, Jin-Guang1; Yu, Dapeng1,2,3; Liao, Zhi-Min1,4

2017-06-28

10.1103/PhysRevB.95.235436

PHYSICAL REVIEW B   影响因子和分区

2469-9950

2469-9969

We report an observation of a topologically protected transport of surface carriers in a quasiballistic Cd3As2 nanowire. The nanowire is thin enough for the spin-textured surface carriers to form 1D subbands, demonstrating conductance oscillations with gate voltage even without magnetic field. The pi-phase shift of Aharonov-Bohm oscillations can periodically appear/disappear by tuning gate voltage continuously. Such a pi-phase shift stemming from the Berry phase demonstrates the topological nature of surface states. The topologically protected transport of the surface states is further revealed by four-terminal nonlocal measurements.

SCI ; EI

英语

其他

NSFC[11274014] ; NSFC[11234001]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000404468300007

AMER PHYSICAL SOC

20191906872760

Arsenic compounds ; Cadmium compounds ; Surface states ; Textures ; Threshold voltage ; Topology

Electricity: Basic Concepts and Phenomena:701.1 ; Nanotechnology:761 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Classical Physics; Quantum Theory; Relativity:931 ; High Energy Physics; Nuclear Physics; Plasma Physics:932 ; Solid State Physics:933

PHYSICS

Web of Science

1.Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
2.Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China
3.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China
4.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

Lin, Ben-Chuan,Wang, Shuo,Wang, Li-Xian,et al. Gate-tuned Aharonov-Bohm interference of surface states in a quasiballistic Dirac semimetal nanowire[J]. PHYSICAL REVIEW B,2017,95(23).

Lin, Ben-Chuan.,Wang, Shuo.,Wang, Li-Xian.,Li, Cai-Zhen.,Li, Jin-Guang.,...&Liao, Zhi-Min.(2017).Gate-tuned Aharonov-Bohm interference of surface states in a quasiballistic Dirac semimetal nanowire.PHYSICAL REVIEW B,95(23).

Lin, Ben-Chuan,et al."Gate-tuned Aharonov-Bohm interference of surface states in a quasiballistic Dirac semimetal nanowire".PHYSICAL REVIEW B 95.23(2017).