English

Reply to: Low-frequency quantum oscillations in LaRhIn$_5$: Dirac point or nodal line?

Strongly Correlated Electrons 2023-05-03 v1

Abstract

We thank G.P. Mikitik and Yu.V. Sharlai for contributing this note and the cordial exchange about it. First and foremost, we note that the aim of our paper is to report a methodology to diagnose topological (semi)metals using magnetic quantum oscillations. Thus far, such diagnosis has been based on the phase offset of quantum oscillations, which is extracted from a "Landau fan plot". A thorough analysis of the Onsager-Lifshitz-Roth quantization rules has shown that the famous π\pi-phase shift can equally well arise from orbital- or spin magnetic moments in topologically trivial systems with strong spin-orbit coupling or small effective masses. Therefore, the "Landau fan plot" does not by itself constitute a proof of a topologically nontrivial Fermi surface. In the paper at hand, we report an improved analysis method that exploits the strong energy-dependence of the effective mass in linearly dispersing bands. This leads to a characteristic temperature dependence of the oscillation frequency which is a strong indicator of nontrivial topology, even for multi-band metals with complex Fermi surfaces. Three materials, Cd3_3As2_2, Bi2_2O2_2Se and LaRhIn5_5 served as test cases for this method. Linear band dispersions were detected for Cd3_3As2_2, as well as the FF \approx 7 T pocket in LaRhIn5_5.

Keywords

Cite

@article{arxiv.2303.06707,
  title  = {Reply to: Low-frequency quantum oscillations in LaRhIn$_5$: Dirac point or nodal line?},
  author = {Chunyu Guo and A. Alexandradinata and Carsten Putzke and Amelia Estry and Teng Tu and Nitesh Kumar and Feng-Ren Fan and Shengnan Zhang and Quansheng Wu and Oleg V. Yazyev and Kent R. Shirer and Maja D. Bachmann and Hailin Peng and Eric D. Bauer and Filip Ronning and Yan Sun and Chandra Shekhar and Claudia Felser and Philip J. W. Moll},
  journal= {arXiv preprint arXiv:2303.06707},
  year   = {2023}
}

Comments

Response to Matter arising for Nature Communications 12, 6213 (2021)