| Autor: |
Williams, R. C., Xiao, F., Lancaster, T., De Renzi, R., Allodi, G., Bordignon, S., Freeman, P. G., Pratt, F. L., Giblin, S. R., Möller, J. S., Blundell, S. J., Boothroyd, A. T., Prabhakaran, D. |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. B 93, 140406 (2016) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.93.140406 |
| Popis: |
We report the results of a muon-spin relaxation ($\mu$SR) investigation of La$_{2-x}$Sr$_{x}$CoO$_{4}$, an antiferromagnetic insulating series which has been shown to support charge ordered and magnetic stripe phases and an hourglass magnetic excitation spectrum. We present a revised magnetic phase diagram, which shows that the suppression of the magnetic ordering temperature is highly sensitive to small concentrations of holes. Distinct behavior within an intermediate $x$ range ($0.2 \leq x \lesssim 0.6$) suggests that the putative stripe ordered phase extends to lower $x$ than previously thought. Further charge doping ($0.67 \leq x \leq 0.9$) prevents magnetic ordering for $T \gtrsim 1.5~{\rm K}$ |
| Databáze: |
arXiv |
| Externí odkaz: |
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