Abstract
We present a far-infrared magneto-optical study of the gapped nodal-line semimetal ZrSiS in magnetic fields B up to 7 T. The observed field-dependent features, which represent intra- (cyclotron resonance) and interband transitions, develop as B in increasing field and can be consistently explained within a simple two-dimensional Dirac band model with a gap of 26 meV and an averaged Fermi velocity of 3×105 m/s. This indicates a rather narrow distribution of these parameters along the in-plane portions of the nodal line in the Brillouin zone. A field-induced feature with an energy position that does not depend on B is also detected in the spectra. Possible origins of this feature are discussed.
Original language | English (US) |
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Article number | 032015 |
Journal | Physical Review Research |
Volume | 1 |
Issue number | 3 |
DOIs | |
State | Published - Nov 2019 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy