Thermal properties of a spin spiral: Manganese on tungsten(110)
Thermal properties of a spin spiral: Manganese on tungsten(110)
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DOI：
10.1103/physrevb.91.064402
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发表时间：
2015-02
影响因子：
3.7
通讯作者：
Georg Hasselberg;R. Yanes;D. Hinzke;P. Sessi;M. Bode;L. Szunyogh;U. Nowak
中科院分区：
文献类型：
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作者：
Georg Hasselberg;R. Yanes;D. Hinzke;P. Sessi;M. Bode;L. Szunyogh;U. Nowak
（2014年7月24日接收; 2014年12月16日收到修订稿; 2015年2月2日出版）我们报告了对W（110）上Mn单原子层的磁性的详细研究。通过多尺度数值计算与测量结果的比较，我们评估了系统的磁基态及其随温度的演化。我们发现基态由摆线自旋螺旋（CSS）组成，它在尼尔温度下持续存在，波长与温度无关。然而，通过不断提高温度，CSS变得热脱钉。这导致了时间平均的磁序的缺失，这一过程可以被看作是超顺磁性的反铁磁模拟。DOI：10.1103/PhysRevB.91.064402 PACS编号：75
(Received 24 July 2014; revised manuscript received 16 December 2014; published 2 February 2015)We report a detailed study of the magnetic properties of a monoatomic layer of Mn on W(110). Bycomparing multiscale numerical calculations with measurements we evaluate the magnetic ground state ofthe system and its temperature-dependent evolution. We find that the ground state consists of a cycloidalspin spiral (CSS) that persists up to the Neel temperature with a temperature-independent wavelength.´However, by continuously increasing the temperature, that CSS becomes thermally depinned. This results ina time-averaged absence of magnetic order, a process that can be viewed as the antiferromagnetic analog ofsuperparamagnetism.DOI: 10.1103/PhysRevB.91.064402 PACS number(s): 75