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arXiv · 2405.04077

Zone-selection effect of photoelectron intensity distributions in a nonsymmorphic system RAlSi (R : Ce and Nd)

Yusei Morita·K. Nakanishi·T. Iwata·K. Ohwada·Y. Nishioka·T. Kousa·M. Nurmamat·K. Yamagami·A. Kimura·T. Yamada·H. Tanida·Kenta Kuroda
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Abstract

We investigate the electronic structures of noncentrosymmetric Weyl semimetals RAlSi (R: Ce and Nd) using soft x-ray angle-resolved photoemission spectroscopy. We find that the photoelectron intensity distribution observed in the momentum-resolved electronic bands is highly sensitive to the covered Brillouin zone (BZ) due to the zone-selection effect arising from the nonsymmorphic crystal structure of RAlSi. Our data reconstruct the photoelectron distributions varied according to the zone-selection effect, and reveal comprehensive information about the electronic band structures reproduced by band calculations. This detailed information enables us to experimentally trace the Weyl-cone dispersion throughout three-dimensional momentum space, providing valuable insights into the unique properties of RAlSi.

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Yusei Morita, K. Nakanishi, T. Iwata, K. Ohwada, Y. Nishioka, T. Kousa, M. Nurmamat, K. Yamagami, A. Kimura, T. Yamada, H. Tanida, Kenta Kuroda. 2024-05-07. Zone-selection effect of photoelectron intensity distributions in a nonsymmorphic system RAlSi (R : Ce and Nd). https://doi.org/10.1103/physrevb.111.l081116

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