Symmetry-Based Phenomenological Model for Magnon Transport in a Multiferroic
Journal Article
·
· Physical Review Letters
- University of California, Berkeley, CA (United States)
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); University of California, Berkeley, CA (United States)
- Cornell Univ., Ithaca, NY (United States)
- Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of)
- Brown Univ., Providence, RI (United States)
- Cornell Univ., Ithaca, NY (United States). Kavli Institute at Cornell for Nanoscale Science; Leibniz Inst. for Crystal Growth (IKZ), Berlin (Germany)
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- University of California, Berkeley, CA (United States); Rice Univ., Houston, TX (United States)
- Luxembourg Institute of Science and Technology (Luxembourg); Univ. of Luxembourg (Luxembourg)
- University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Rice Univ., Houston, TX (United States)
Magnons-carriers of spin information-can be controlled by electric fields in the multiferroic BiFeO3 (BFO), a milestone that brings magnons closer to application in future devices. The origin of magnon-spin currents in BFO, however, is not fully understood due to BFO's complicated magnetic texture. In this Letter, we present a phenomenological model to elucidate the existence of magnon spin currents in generalized multiferroics by examining the symmetries inherent to their magnetic and polar structures. This model is grounded in experimental data obtained from BFO and its derivatives, which informs the symmetry operations and resultant magnon behavior. By doing so, we address the issue of symmetry-allowed, switchable magnon spin transport in multiferroics, thereby establishing a critical framework for comprehending magnon transport within complex magnetic textures.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 2562798
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 1 Vol. 134; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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