A tunable and unidirectional one-dimensional electronic system Nb2n+1SinTe4n+2
Source abstract
Abstract
Abstract One dimensional (1D) electronic system is a versatile platform hosting novel physics, such as charge density wave, Su-Schrieffer-Heeger (SSH) topological state and solitons, Tomonaga-Luttinger Liquid etc. Here, we systematically study the surface electronic properties on layered composition-tunable compounds Nb2n+1SinTe4n+2 (n = 1–5), which is predicted to be a nodal-line semimetal when n = 1 (Nb3SiTe6). Via scanning tunneling microscopy/spectroscopy, we observe 1D chains formed on the surface of the compounds. We uncover that with the increasing of n, the distance between the chains becomes larger, and the 1D electronic state is developed in the compounds with n ≥ 3. Our first-principle calculations reveal that the nodal-line in Nb3SiTe6 and the 1D electronic state in the crystals with higher n in fact arise from the same bands, which are protected by the same nonsymmorphic symmetry. Furthermore, we can understand the evolution of the electronic states on these series of compounds with such complicated structures and compositions based on a simple SSH type picture. Our experiment demonstrates a tunable and unidirectional 1D electronic system, which offers a concrete platform for the exploration of intriguing 1D electron physics and will enrich the opportunity for future condensed matter physics, material science and nanotechnology researches.
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Research context
OpenAlex topics: Topological Materials and Phenomena · Iron-based superconductors research · 2D Materials and Applications
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References (45)
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1. Snijders, P. C. & Weitering, H. H. Colloquium: electronic instabilities in self-assembled atom wires. Rev. Mod. Phys. 82, 307–329 (2010).10.1103/RevModPhys.82.307 ↗
2. Yeom, H. W. et al. Instability and charge density wave of metallic quantum chains on a silicon surface. Phys. Rev. Lett. 82, 4898–4901 (1999).10.1103/PhysRevLett.82.4898 ↗
3. Crain, J. N. & Pierce, D. T. End states in one-dimensional atom chains. Science 307, 703–706 (2005).10.1126/science.1106911 ↗
4. Zeng, C. et al. Charge-order fluctuations in one-dimensional silicides. Nat. Matter 7, 539–542 (2008).10.1038/nmat2209 ↗
5. Blumenstein, C. et al. Atomically controlled quantum chains hosting a Tomonaga–Luttinger liquid. Nat. Phys. 7, 776–780 (2011).10.1038/nphys2051 ↗
6. Cheon, S., Kim, T.-H., Lee, S.-H. & Yeom, H. W. Chiral solitons in a coupled double Peierls chain. Science 350, 182–185 (2015).10.1126/science.aaa7055 ↗
7. Do, E. H. & Yeom, H. W. Electron quantization in broken atomic wires. Phys. Rev. Lett. 115, 266803 (2015).10.1103/PhysRevLett.115.266803 ↗
8. Lee, G., Shim, H., Hyun, J.-M. & Kim, H. Intertwined solitons and impurities in a quasi-one-dimensional charge-density-wave system: In/Si(111). Phys. Rev. Lett. 122, 016102 (2019).10.1103/PhysRevLett.122.016102 ↗
9. Drozdov, I. K. et al. One-dimensional topological edge states of bismuth bilayers. Nat. Phys. 10, 664–669 (2014).10.1038/nphys3048 ↗
10. Pauly, C. et al. Subnanometre-wide electron channels protected by topology. Nat. Phys. 11, 338–342 (2015).10.1038/nphys3264 ↗
11. Sessi, P. et al. Robust spin-polarized midgap states at step edges of topological crystalline insulators. Science 354, 1269–1273 (2016).10.1126/science.aah6233 ↗
12. Tang, S. et al. Quantum spin Hall state in monolayer 1T’-WTe2. Nat. Phys. 13, 683–687 (2017).10.1038/nphys4174 ↗
13. Reis, F. et al. Bismuthene on a SiC substrate: a candidate for a high-temperature quantum spin Hall material. Science 357, 287–290 (2017).10.1126/science.aai8142 ↗
14. Liu, H. et al. Dense network of one-dimensional midgap metallic modes in monolayer MoSe2 and their spatial undulations. Phys. Rev. Lett. 113, 066105 (2014).10.1103/PhysRevLett.113.066105 ↗
15. Barja, S. et al. Charge density wave order in 1D mirror twin boundaries of single-layer MoSe2. Nat. Phys. 12, 785–756 (2016).10.1038/nphys3730 ↗
16. Jolie, W. et al. Tomonaga-Luttinger liquid in a box: Electrons confined within MoS2 mirror-twin boundaries. Phys. Rev. X 9, 011055 (2019).
17. Chen, P. et al. Large quantum-spin-Hall gap in single-layer 1T′ WSe2. Nat. Commun. 9, 2003 (2018).
18. Ugeda, M. M. et al. Observation of topologically protected states at crystalline phase boundaries in single-layer WSe2. Nat. Commun. 9, 3401 (2018).10.1038/s41467-018-05672-w ↗
19. Hsu, P. J. et al. Hysteretic melting transition of a soliton lattice in a commensurate charge modulation. Phys. Rev. Lett. 111, 266401 (2013).10.1103/PhysRevLett.111.266401 ↗
20. Li, Q. et al. Bond competition and phase evolution on the IrTe2 surface. Nat. Commun. 5, 5358 (2014).
21. Chen, C. et al. Surface phases of the transition-metal dichalcogenide IrTe2. Phys. Rev. Lett. 95, 094118 (2017).
22. Ruddlesden, S. N. & Popper, P. The compound Sr3Ti2O7 and its structure. Acta Crystallogr. 11, 54–55 (1958).10.1107/S0365110X58000128 ↗
23. Moon, S. J. et al. Dimensionality-controlled insulator-metal transition and correlated metallic state in 5d transition metal oxides Srn+1IrnO3n+1 (n = 1, 2, and∞). Phys. Rev. Lett. 101, 226402 (2008).10.1103/PhysRevLett.101.226402 ↗
24. Hiroi, Z., Takano, M., Azuma, M. & Takeda, Y. A new family of copper oxide superconductors Srn+1CunO2n+1+δ stabilized at high pressure,. Nature 364, 315–317 (1993).10.1038/364315a0 ↗
25. Tsai, H. et al. High-efficiency two-dimensional Ruddlesden–Popper perovskite solar cells. Nature 536, 312–316 (2016).10.1038/nature18306 ↗
26. L, J., Badding, M. E. & DiSalvo, F. J. Synthesis and structure of Nb3SiTe6, a new layered ternary niobium telluride compound. J. Alloy Compd. 184, 257–263 (1992).10.1016/0925-8388(92)90499-Y ↗
27. Evain, M., Van der Lee, A., Monconduit, L. & Petricek, V. Modulated structure of TaSi0.414Te2: sandwich stacking in the MAxTe2 (M = Nb, Ta; A = Si, Ge; 1/3 < x < 1/2) Series. Chem. Mater. 6, 1776–1783 (1994).10.1021/cm00046a034 ↗
28. Van der Lee, A. et al. A superspace approach to the modulated structures of MAxTe2 (M = Nb, Ta; A = Si, Ge; 1/2< x < 1/3), exemplified by NbGe3/7Te2. J. Phys. Condens. Matter 6, 933–944 (1994).10.1088/0953-8984/6/5/003 ↗
29. Monconduit, L. et al. Synthesis, crystal and electronic structure of a new ternary layered compound: Nb2SiTe4. Comptes Rendus Acad. Sci. Ser. II 316, 25–34 (1993).
30. Hu, J. et al. Enhanced electron coherence in atomically thin Nb3SiTe6. Nat. Phys. 11, 471–476 (2015).10.1038/nphys3321 ↗
31. Li, S. et al. Nonsymmorphic-symmetry-protected hourglass Dirac loop, nodal line, and Dirac point in bulk and monolayer X3SiTe6 (X = Ta, Nb). Phys. Rev. B 97, 045131 (2018).10.1103/PhysRevB.97.045131 ↗
32. Sato, T. et al. Observation of band crossings protected by nonsymmorphic symmetry in the layered ternary telluride Ta3SiTe6. Phys. Rev. B 98, 121111(R) (2018).10.1103/PhysRevB.98.121111 ↗
33. An, L. et al. Magnetoresistance and Shubnikov–de Haas oscillations in layered Nb3SiTe6 thin flakes. Phys. Rev. B 97, 235133 (2018).10.1103/PhysRevB.97.235133 ↗
34. Naveed, M. et al. Magneto-transport and Shubnikov-de Haas oscillations in the layered ternary telluride topological semimetal candidate Ta3SiTe6. Appl. Phys. Lett. 116, 092402 (2020).10.1063/1.5131618 ↗
35. Zheng, H. et al. Atomic-Scale visualization of quantum interference on a Weyl semimetal surface by scanning tunneling microscopy. ACS Nano 10, 1378–1385 (2016).10.1021/acsnano.5b06807 ↗
36. Zheng, H. & Hasan, M. Z. Quasiparticle interference on type-I and type-II Weyl semimetal surfaces: a review. Adv. Phys. X 3, 1466661 (2018).
37. Zhu, Z. et al. Quasiparticle interference and nonsymmorphic effect on a floating band surface state of ZrSiSe. Nat. Commun. 9, 4153 (2018).
38. Nie, X.-A. et al. Robust hot electron and multiple topological insulator states in PtBi2. ACS Nano 14, 2366–2372 (2020).10.1021/acsnano.9b09564 ↗
39. Schirone, S. et al. A. Spin-flip and element-sensitive electron scattering in the BiAg2 surface alloy. Phys. Rev. Lett. 114, 166801 (2015).10.1103/PhysRevLett.114.166801 ↗
40. Chang, K. et al. Standing waves induced by valley-mismatched domains in ferroelectric SnTe monolayers. Phys. Rev. Lett. 122, 206402 (2019).10.1103/PhysRevLett.122.206402 ↗
41. Su, W. P., Schrieffer, J. R. & Heeger, A. J. Solitons in polyaeetylene. Phys. Rev. Lett. 42, 1698–1701 (1979).10.1103/PhysRevLett.42.1698 ↗
42. Kresse, G. & Hafner, J. Ab initio molecular-dynamics simulation of the liquid-metal–amorphous-semiconductor transition in germanium. Phys. Rev. B 49, 14251–14269 (1994).10.1103/PhysRevB.49.14251 ↗
43. Kresse, G. & Furthmüller, J. Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set. Phys. Rev. B 54, 11169–11186 (1996).10.1103/PhysRevB.54.11169 ↗
44. Blöchl, P. E. Projector augmented-wave method. Phys. Rev. B 50, 17953–17979 (1994).10.1103/PhysRevB.50.17953 ↗
45. Perdew, J. P., Burke, K. & Ernzerhof, M. Generalized gradient approximation made simple. Phys. Rev. Lett. 77, 3865–3868 (1996).10.1103/PhysRevLett.77.3865 ↗