The quantum oscillations in different probe configurations in the [Formula: see text] topological insulator macroflake

Shiu-Ming Huang; Chien Lin; Sheng-Yu You; You-Jhih Yan; Shih-Hsun Yu; Mitch Chou

doi:10.1038/s41598-022-09073-4

The quantum oscillations in different probe configurations in the [Formula: see text] topological insulator macroflake

Sci Rep. 2022 Mar 25;12(1):5191. doi: 10.1038/s41598-022-09073-4.

Authors

Shiu-Ming Huang^{1

2

3}, Chien Lin¹, Sheng-Yu You¹, You-Jhih Yan⁴, Shih-Hsun Yu⁴, Mitch Chou^{2

4

3}

Affiliations

¹ Department of Physics, National Sun Yat-Sen University, Kaohsiung, 80424 Taiwan.
² Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung, 80424 Taiwan.
³ Taiwan Consortium of Emergent Crystalline Materials, TCECM, National Sun Yat-Sen University, Kaohsiung, 80424 Taiwan.
⁴ Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 80424 Taiwan.

Abstract

We demonstrate quantum oscillations in [Formula: see text] 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 [Formula: see text] phase shift in the local and non-local configuration. The Berry phase is [Formula: see text] in the local configuration and 0 in non-local configuration.