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Optical Observation of Quasiperiodic Heisenberg Antiferromagnets in Two Dimensions
| Title: | Optical Observation of Quasiperiodic Heisenberg Antiferromagnets in Two Dimensions |
| Authors: | Inoue, Takashi Browse this author | | Yamamoto, Shoji Browse this author →KAKEN DB |
| Keywords: | Heisenberg antiferromagnets | | quasicrystals | | Raman scattering | | spin-wave theory |
| Issue Date: | Nov-2020 |
| Publisher: | Wiley-Blackwell |
| Journal Title: | Physica status solidi B-basic solid state physics |
| Volume: | 257 |
| Issue: | 11 |
| Start Page: | 2000118 |
| Publisher DOI: | 10.1002/pssb.202000118 |
| Abstract: | A spin-wave analysis of magnetic Raman scattering in an antiferromagnetic Heisenberg model on the 2D Penrose lattice ofC5vpoint symmetry is made. Following the Shastry-Shraiman perturbation scheme for a strongly correlated Hubbard model, fourth-order effective Raman operators are obtained. Within the second-order mechanism, there is one and only Raman active mode ofE2symmetry, yielding a spectral weight independent of light polarization. Considering the fourth-order scatterings as well, activatesA1andA2as well asE2modes and therefore results in polarization-dependent Raman spectra. With the use of linearly and circularly polarized lights, all the symmetry species can separately be extracted from observations. Though the linear spin-wave theory, i.e., the harmonic oscillator approximation, is far from quantitative, theA2andE2Raman intensities are well describable with two magnon interactions. The Raman-activeA1mode owes much to higher-order magnon-magnon interactions as well. |
| Rights: | This is the peer reviewed version of the following article:Physica status solidi B-basic solid state physics 2000118
July 2020, 2000118 which has been published in final form at https://onlinelibrary.wiley.com/doi/full/10.1002/pssb.202000118. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/83127 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 山本 昌司
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