Frustrated magnetism from local moments in FeSe
Journal Article
·
· Physical Review B
- Stanford Univ., Stanford, CA (United States); Stanford Univ., Menlo Park, CA (United States)
- Stanford Univ., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States); Harvard Univ., Cambridge, MA (United States)
- Stanford Univ., Menlo Park, CA (United States); Univ. of North Dakota, Grand Forks, ND (United States)
- Walther Meissner Institut, Garching (Germany); Technische Univ. Munchen, Garching (Germany)
- Walther Meissner Institut, Garching (Germany)
- Stanford Univ., Menlo Park, CA (United States)
We investigate properties of a spin-1 Heisenberg model with extended and biquadratic interactions, which captures crucial aspects of the low energy physics in FeSe. While we show that the model exhibits a rich phase diagram with four different magnetic ordering tendencies, we identify a parameter regime with strong competition between Néel, staggered dimer, and stripelike magnetic fluctuations, accounting for the physical properties of FeSe. We evaluate the spin and Raman responses using exact diagonalization. Through comparison with experiments we find enhanced magnetic frustration between Néel and collinear stripe ordering tendencies, which increases with increasing temperature. As a result, the explanation of these spectral behaviors with this frustrated spin model supports the idea of local spin interactions in FeSe.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- AC02-05CH11231; AC02-76SF00515
- OSTI ID:
- 1526705
- Alternate ID(s):
- OSTI ID: 1501698
OSTI ID: 1543136
- Journal Information:
- Physical Review B, Journal Name: Physical Review B Journal Issue: 12 Vol. 99; ISSN 2469-9950; ISSN PRBMDO
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Anisotropic magnetic excitations of a frustrated bilinear-biquadratic spin model: Implications for spin waves of detwinned iron pnictides
|
journal | January 2020 |
Similar Records
Frustrated magnetism from local moments in FeSe
Frustrated spin order and stripe fluctuations in FeSe
Spin correlations in the nematic quantum disordered state of FeSe
Journal Article
·
Thu Feb 28 23:00:00 EST 2019
· Physical Review B
·
OSTI ID:1543136
Frustrated spin order and stripe fluctuations in FeSe
Journal Article
·
Sun Feb 03 19:00:00 EST 2019
· Communications Physics
·
OSTI ID:1619707
Spin correlations in the nematic quantum disordered state of FeSe
Journal Article
·
Wed Jun 04 20:00:00 EDT 2025
· Nature Communications
·
OSTI ID:2586904