Microscopic Theory of Magnetic Detwinning in Iron-Based Superconductors with Large-Spin Rare Earths
Microscopic Theory of Magnetic Detwinning in Iron-Based Superconductors with Large-Spin Rare Earths
复制标题
大自旋稀土铁基超导体磁解孪微观理论
DOI:
10.1103/physrevx.8.011011
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发表时间:
2018
影响因子:
12.5
通讯作者:
Philipp Gegenwart
中科院分区:
文献类型:
--
作者:
Jannis Maiwald;I.I. Mazin;Philipp Gegenwart
Detwinning of magnetic (nematic) domains in Fe-based superconductors has so far only been obtained through mechanical straining, which considerably perturbs the ground state of these materials. The recently discovered nonmechanical detwinning inby ultralow magnetic fields offers an entirely different, nonperturbing way to achieve the same goal. However, this way seemed risky due to the lack of a microscopic understanding of the magnetically driven detwinning. Specifically, the following issues remained unexplained: (i) ultralow value of the first detwinning field of approximately 0.1 T, two orders of magnitude below that of, and (ii) reversal of the preferential domain orientation at approximately 1 T and restoration of the low-field orientation above 10–15 T. In this paper, we present, using published as well as newly measured data, a full theory that quantitatively explains all the observations. The key ingredient of this theory is a biquadratic coupling between Fe and Eu spins, analogous to the Fe-Fe biquadratic coupling that drives the nematic transition in this family of materials.
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影响因子:
8.6
作者:
S. Zapf;C. Stingl;Kirk Post;J. Maiwald;J. Maiwald;N. Bach;I. Pietsch;D. Neubauer;A. Löhle;C. Clauss;S. Jiang;H. Jeevan;Dimitri Basov;P. Gegenwart;P. Gegenwart;M. Dressel
通讯作者:
S. Zapf;C. Stingl;Kirk Post;J. Maiwald;J. Maiwald;N. Bach;I. Pietsch;D. Neubauer;A. Löhle;C. Clauss;S. Jiang;H. Jeevan;Dimitri Basov;P. Gegenwart;P. Gegenwart;M. Dressel
DOI:
10.1103/physrevb.79.180508
发表时间:
2009-04
期刊:
arXiv: Superconductivity
影响因子:
--
作者:
M. Tanatar;A. Kreyssig;S. Nandi;N. Ni;S. Bud’ko;P. Canfield;A. Goldman;R. Prozorov
通讯作者:
M. Tanatar;A. Kreyssig;S. Nandi;N. Ni;S. Bud’ko;P. Canfield;A. Goldman;R. Prozorov
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
J. Ok;S. Baek;C. Hoch;R. Kremer;S. Park;S. Ji;B. Buechner;J. Park;S. Hyun;J. Shim;Y. Bang;E. Moon;I. Mazin;J. S. Kim
通讯作者:
J. S. Kim
影响因子:
3.3
作者:
Jiang, Shuai;Luo, Yongkang;Xu, Zhu'an
通讯作者:
Xu, Zhu'an
影响因子:
1.9
作者:
M. Yoshizawa;Shalamujiang Simayi
通讯作者:
Shalamujiang Simayi