Magnetic field tuning of valley population in the Weyl phase of Nd2Ir2 O7
The frustrated magnet Nd2Ir2O7, where strong correlations together with spin-orbit coupling play a crucial role, is predicted to be a Weyl semimetal and to host topological pairs of bulk Dirac-like valleys. Here we use an external magnetic field to manipulate the localized rare-earth 4f moments coup...
Main Authors: | , , , , , , , |
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Format: | Article |
Language: | English |
Published: |
American Physical Society
2022
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Subjects: | |
Online Access: | View Fulltext in Publisher |
Summary: | The frustrated magnet Nd2Ir2O7, where strong correlations together with spin-orbit coupling play a crucial role, is predicted to be a Weyl semimetal and to host topological pairs of bulk Dirac-like valleys. Here we use an external magnetic field to manipulate the localized rare-earth 4f moments coupled to the 5d electronic bands. Low-energy optical spectroscopy reveals that a field of only a few teslas suffices to create charge-compensating pockets of holes and electrons in different regions of momentum space, thus introducing a valley population shift that can be tuned with the field. © 2022 authors. Published by the American Physical Society. |
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ISBN: | 26431564 (ISSN) |
DOI: | 10.1103/PhysRevResearch.4.023056 |