Disorder-Induced Static Antiferromagnetism in Cuprate Superconductors
Journal Article
·
· Physical Review Letters
- University of Florida, Gainesville, FL (United States); Univ. of Florida, Gainesville, FL (United States)
- University of Florida, Gainesville, FL (United States)
- Universität Augsburg (Germany)
Using model calculations of a disordered d-wave superconductor with on-site Hubbard repulsion, we show how dopant disorder can stabilize novel states with antiferromagnetic order. We find that the critical strength of correlations or impurity potential necessary to create an ordered magnetic state in the presence of finite disorder is reduced compared to that required to create a single isolated magnetic droplet. Furthermore, this may explain why, in cuprates such as La2–xSrxCuO4, low-energy probes have identified a static magnetic component which persists well into the superconducting state, whereas, in cleaner systems such as YBa2Cu3O6+δ, it is absent or minimal.
- Research Organization:
- University of Florida, Gainesville, FL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- FG02-05ER46236
- OSTI ID:
- 2483797
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 14 Vol. 99; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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