The quantum oscillations in different probe configurations in the $$\hbox {BiSbTe}_{{3}}$$ topological insulator macroflake

Abstract

We demonstrate quantum oscillations in $$\hbox {BiSbTe}_{{3}}$$ BiSbTe 3 topological insulator macroflakes in different probe configurations. The oscillation period in the local configuration is twice compared to the non-local configuration. The Aharonov–Bohm-like (AB-like) oscillation dominates the transport property in the local configuration and the Altshuler–Aronov–Spivak-like (AAS-like) oscillation dominates the transport property in the non-local configuration. The AB-like oscillation period is 0.21 T and the related loop diameter is 156 nm which is consistent with the reported phase coherence length in topological insulators. The Shubnikov–de Haas oscillation frequency is the same but oscillation peaks reveal a $$\pi$$ π phase shift in the local and non-local configuration. The Berry phase is $$\pi$$ π in the local configuration and 0 in non-local configuration.

Mesoscopic Conductance Fluctuations in 2D HgTe Semimetal

“…This means that any conductor of smaller micron sizes with metallic conductivity should demonstrate UCF. At the present time, there are a lot of papers concerning different properties of the UCF in ordinary mesoscopic metals, semiconductors, superconductors and hybrid mesostructures on the basis of them [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20], in graphene-like structures [21][22][23][24][25][26][27][28][29][30], and in mesoscopic topological systems [31][32][33][34][35][36][37][38][39][40][41].…”