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Title: Proposal for dynamic imaging of antiferromagnetic domain wall via quantum-impurity relaxometry

Journal Article · · Physical Review B
 [1];  [2];  [3];  [2]
  1. Univ. of California, Los Angeles, CA (United States); DOE/OSTI
  2. Univ. of California, Los Angeles, CA (United States)
  3. Purdue Univ., West Lafayette, IN (United States)

While spin textures in materials exhibiting zero net magnetization, such as antiferromagnetic domain walls, have attracted much interest lately due to their robustness against external magnetic noise, their generic detection via conventional magnetometry remains a challenging task. Here, we propose quantum relaxometry as a route to image spin textures by probing the collective spin modes harbored by them. We investigate the Goldstone modes hosted by an antiferromagnetic domain wall and assess the relaxation rate of a quantum-spin sensor interacting with them. Furthermore, we show that such modes can be detected via relaxometry in some common antiferromagnets. Moreover, based on symmetry considerations, we propose a strategy for probing the individual dynamics of each mode.

Research Organization:
Univ. of California, Los Angeles, CA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012190
OSTI ID:
1611742
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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