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Stripe Order and Spin Dynamics in Nickelates |
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| Authors: | Klauss H-H Baabe D Mienert D Birke M Luetkens H Litterst F J Hücker M Büchner B Cheong S W |
| Institution: | 1.Inst. f. Metallphysik und Nukleare Festk?rperphysik TU Braunschweig, 38106, Braunschweig, Germany ;2.II. Physikalisches Institut, RWTH Aachen, 52056, Aachen, Germany ;3.Department of Physics and Astronomy, Rutgers University, USA and ;4.Bell Laboratories, Lucent Technologies, Murray Hill, USA ; |
| Abstract: | We report zero field μSR experiments on the lanthanum nickelate La2−x Sr x NiO4+δ system with strontium doping level x between 0 and 0.6. In a single crystal with x=0.33 the internal field distribution shows two separated signals reflecting the antiferromagnetic domains and the non magnetic antiphase domain walls in the spin and charge ordered state below 190 K. Below 70 K a broadening of the low field line is observed. A similar behavior is observed in polycrystalline samples with 0.2≤x≤0.5. This revised version was published online in September 2006 with corrections to the Cover Date. |
| Keywords: | charge order stripe magnetism nickelates muon spin relaxation |
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