Field-Induced Modulated State in the Ferromagnet PrPtAl.
Field-Induced Modulated State in the Ferromagnet PrPtAl.
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铁磁体 PrPtAl 中的场致调制状态。
DOI：
10.1103/physrevlett.126.197203
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发表时间：
2021
影响因子：
8.6
通讯作者：
O'Neill CD
中科院分区：
文献类型：
--
作者：
O'Neill CD
量子有序-无序理论解释了零场下铁磁性和顺磁性交界处调制磁态的形成。PrPtAl一直被认为提供了一个原型。在这里，我们报告了沿着易轴和难轴施加的磁场中的相图。对于与轴平行的场，我们发现磁转变温度被抑制，并且在低温下存在一个单一的调制扇态，将易轴铁磁态与场极化态分开。在存在各向异性和场的情况下，用QOBD理论很好地解释了这种扇形状态。支持QOBD解释的实验证据提供了thecoefficient的电阻率和直接检测增强的磁波动与非弹性中子散射，跨越由风扇状态跨越的字段范围。这表明QOBD机制可以解释在很低温度下持续存在的场致调制态。
The theory of quantum order-by-disorder (QOBD) explains the formation of modulated magnetic states at the boundary between ferromagnetism and paramagnetism in zero field. PrPtAl has been argued to provide an archetype for this. Here, we report the phase diagram in magnetic field, applied along both the easyaxis and hardaxis. For field aligned to theaxis, we find that the magnetic transition temperatures are suppressed and at low temperature there is a single modulated fan state, separating an easyaxis ferromagnetic state from a field polarized state. This fan state is well explained with the QOBD theory in the presence of anisotropy and field. Experimental evidence supporting the QOBD explanation is provided by the large increase in thecoefficient of the resistivity and direct detection of enhanced magnetic fluctuations with inelastic neutron scattering, across the field range spanned by the fan state. This shows that the QOBD mechanism can explain field induced modulated states that persist to very low temperature.
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影响因子：
19.6
作者：
D. Sokolov;Naoki Kikugawa;Toni Helm;H. Borrmann;Ulrich Burkhardt;R. Cubitt;Jonathan S. White;E. Ressouche;M. Bleuel;M. Bleuel;K. Kummer;A. P. Mackenzie;A. P. Mackenzie;U. Rößler
通讯作者：
D. Sokolov;Naoki Kikugawa;Toni Helm;H. Borrmann;Ulrich Burkhardt;R. Cubitt;Jonathan S. White;E. Ressouche;M. Bleuel;M. Bleuel;K. Kummer;A. P. Mackenzie;A. P. Mackenzie;U. Rößler
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影响因子：
5.4
作者：
H. Kitazawa;A. Donni;L. Keller;J. Tang;F. Fauth;G. Kido
通讯作者：
G. Kido
影响因子：
19.6
作者：
Friedemann, Sven;Duncan, Will J.;Grosche, F. Malte
通讯作者：
Grosche, F. Malte
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影响因子：
2.8
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G. Kido
影响因子：
2.7
作者：
HERZ, R;KRONMULLER, H
通讯作者：
KRONMULLER, H