Ballistic PbTe Nanowire Devices

Wang，Yuhao1; Chen，Fangting1; Song，Wenyu1; Geng，Zuhan1; Yu，Zehao1; Yang，Lining1; Gao，Yichun1; Li，Ruidong1; Yang，Shuai1; Miao，Wentao1; Xu，Wei1; Wang，Zhaoyu1; Xia，Zezhou1; Song，Hua Ding2; Feng，Xiao1,2,3,4; Wang，Tiantian2,4; Zang，Yunyi2,4; Li，Lin2; Shang，Runan2,4; Xue，Qikun1,2,3,4,5; He，Ke1,2,3,4; Zhang，Hao1,2,3

2023-12-13

10.1021/acs.nanolett.3c03604

Nano Letters   影响因子和分区

1530-6984

1530-6992

Disorder is the primary obstacle in the current Majorana nanowire experiments. Reducing disorder or achieving ballistic transport is thus of paramount importance. In clean and ballistic nanowire devices, quantized conductance is expected, with plateau quality serving as a benchmark for disorder assessment. Here, we introduce ballistic PbTe nanowire devices grown by using the selective-area-growth (SAG) technique. Quantized conductance plateaus in units of 2e/h are observed at zero magnetic field. This observation represents an advancement in diminishing disorder within SAG nanowires as most of the previously studied SAG nanowires (InSb or InAs) have not exhibited zero-field ballistic transport. Notably, the plateau values indicate that the ubiquitous valley degeneracy in PbTe is lifted in nanowire devices. This degeneracy lifting addresses an additional concern in the pursuit of Majorana realization. Moreover, these ballistic PbTe nanowires may enable the search for clean signatures of the spin-orbit helical gap in future devices.

ballistic transport conductance quantization nanowires PbTe

EI ; SCI

英语

NI论文

其他

20234915155807

Antimony compounds ; Ballistics ; Benchmarking ; III-V semiconductors ; Indium antimonides ; Indium arsenide ; IV-VI semiconductors ; Lead compounds ; Narrow band gap semiconductors ; Quantum chemistry ; Quantum electronics ; Tellurium compounds ; Transport properties

Military Engineering:404.1 ; Semiconducting Materials:712.1 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Mechanics:931.1 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Quantum Theory; Quantum Mechanics:931.4 ; Solid State Physics:933

MATERIALS SCIENCE

2-s2.0-85178089571

Scopus

1.State Key Laboratory of Low Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing,100084,China
2.Beijing Academy of Quantum Information Sciences,Beijing,100193,China
3.Frontier Science Center for Quantum Information,Beijing,100084,China
4.Hefei National Laboratory,Hefei,230088,China
5.Southern University of Science and Technology,Shenzhen,518055,China

Wang，Yuhao,Chen，Fangting,Song，Wenyu,et al. Ballistic PbTe Nanowire Devices[J]. Nano Letters,2023,23(23):11137-11144.

Wang，Yuhao.,Chen，Fangting.,Song，Wenyu.,Geng，Zuhan.,Yu，Zehao.,...&Zhang，Hao.(2023).Ballistic PbTe Nanowire Devices.Nano Letters,23(23),11137-11144.

Wang，Yuhao,et al."Ballistic PbTe Nanowire Devices".Nano Letters 23.23(2023):11137-11144.