Revisiting spin cycloids in multiferroic BiFeO3
- Soochow Univ., Jiangsu (China); Univ. of Arkansas, Fayetteville, AR (United States); DOE/OSTI
- Johannes Gutenberg-Univ. Mainz (Germany)
- Univ. of Arkansas, Fayetteville, AR (United States)
- Fudan Univ., Shanghai (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)
We revisit the inverse spin current model that has been previously used to explain the existence of magnetic cycloids in bulk multiferroic BiFeO3. Using a first-principles-based effective Hamiltonian method, and in combination with Monte Carlo simulations, we predict a magnetic phase diagram as a function of first- and second-nearest-neighbor interaction strength in the spin current model and show that, in contrast with previous understanding, both first and second nearest neighbors have to be taken into account to be in accordance with experimental findings, including the existence of type-1 and type-2 cycloids with, respectively, [1¯10] and [11¯2] propagation directions, and the cycloid-to-antiferromagnetic transition under magnetic field. Other previously unknown magnetic arrangements are found in this phase diagram. Here, the microscopic origins of all its magnetic phases are further explained in terms of the coexistence of single solutions of the spin current model having different weights (in magnitude and even sign).
- Research Organization:
- Univ. of Arkansas, Fayetteville, AR (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); Air Force Office of Scientific Research
- Grant/Contract Number:
- SC0002220
- OSTI ID:
- 1610673
- Alternate ID(s):
- OSTI ID: 1482757
- Journal Information:
- Physical Review B, Journal Name: Physical Review B Journal Issue: 18 Vol. 98; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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