Landau Quantization in Coupled Weyl Points: A Case Study of Semimetal NbP.
basic_science · Level V
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- Record sourced from PubMed, PMID 30403143.
- Also identified by DOI 10.1021/acs.nanolett.8b03418.
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Abstract
Weyl semimetal (WSM) is a newly discovered quantum phase of matter that exhibits topologically protected states characterized by two separated Weyl points with linear dispersion in all directions. Here, via combining theoretical analysis and magneto-infrared spectroscopy of an archetypal Weyl semimetal, niobium phosphide, we demonstrate that the coupling between Weyl points can significantly modify the electronic structure of a WSM and provide a new twist to the protected states. These findings suggest that the coupled Weyl points should be considered as the basis for analysis of realistic WSMs.