Hidden nontrivial Berry phase and spin-zero effect in Te nanowires

Zhang, Y and Li, J and Bandyopadhyay, A and Jia, Z and Benno Joseph, N and Leng, P and Ma, Q and Ai, L and Zhang, E and Narayan, A and Xiu, F (2023) Hidden nontrivial Berry phase and spin-zero effect in Te nanowires. In: Physical Review B, 108 (24).

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Abstract

The �phase shift of quantum oscillations is generally believed to be a smoking gun evidence for nontrivial Berry phase. However, the spin-zero effect, a sign reversal of quantum oscillations at different magnetic field directions, adds an additional �phase shift. Thus, the nontrivial Berry curvature can be concealed by the spin-zero effect, resulting in an apparent trivial phase in quantum oscillation measurements. In this work, we report a hidden Berry phase in Weyl semiconductor Te nanowires. A trivial-like Berry phase is observed in the quantum oscillations in Te nanowires. However, a large g factor, together with the band evolution under magnetic fields, leads to a spin-zero effect in Te nanowires. We further derive the nontrivial nature of Te nanowires from quantum transport. © 2023 American Physical Society.

Item Type:	Journal Article
Publication:	Physical Review B
Publisher:	American Physical Society
Additional Information:	The copyright for this article belongs to American Physical Society.
Keywords:	Fruits; Nanowires; Quantum chemistry, Berry's phase; Different-magnetic fields; G factors; Magnetic-field; Magnetic-field direction; Oscillation measurements; Quantum oscillations; Sign reversal; Te nanowire; Zero effects, Magnetic fields
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	01 Mar 2024 06:25
Last Modified:	01 Mar 2024 06:25
URI:	https://eprints.iisc.ac.in/id/eprint/84013

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