Using magnetic dynamics to measure the spin gap in a candidate Kitaev material
Abstrak
Materials potentially hosting Kitaev spin-liquid states are considered crucial for realizing topological quantum computing. However, the intricate nature of spin interactions within these materials complicates the precise measurement of low-energy spin excitations indicative of fractionalized excitations. Using Na$_{2}$Co$_2$TeO$_{6}$ as an example, we study these low-energy spin excitations using the time-resolved resonant elastic x-ray scattering (tr-REXS). Our observations unveil remarkably slow spin dynamics at the magnetic peak, whose recovery timescale is several nanoseconds. This timescale aligns with the extrapolated spin gap of $\sim$ 1 $μ$eV, obtained by density matrix renormalization group (DMRG) simulations in the thermodynamic limit. The consistency demonstrates the efficacy of tr-REXS in discerning low-energy spin gaps inaccessible to conventional spectroscopic techniques.
Topik & Kata Kunci
Penulis (19)
Xinyi Jiang
Qingzheng Qiu
Cheng Peng
Hoyoung Jang
Wenjie Chen
Xianghong Jin
Li Yue
Byungjune Lee
Sang-Youn Park
Minseok Kim
Hyeong-Do Kim
Xinqiang Cai
Qizhi Li
Tao Dong
Nanlin Wang
Joshua J. Turner
Yuan Li
Yao Wang
Yingying Peng
Akses Cepat
- Tahun Terbit
- 2024
- Bahasa
- en
- Sumber Database
- arXiv
- Akses
- Open Access ✓