Effect of magnetism and phonons on localized carriers in the ferrimagnetic kagome metals 
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 and 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mtext>TbMn</mml:mtext><mml:mn>6</mml:mn></mml:msub><mml:msub><mml:mtext>Sn</mml:mtext><mml:mn>6</mml:mn></mml:msu

Wenzel, Matthias; Tsirlin, Alexander A.; Iakutkina, Olga; Yin, Qiangwei; Lei, Hechang; Dressel, Martin; Uykur, Ece

doi:10.1103/physrevb.106.l241108

Cited by 11 publications

(5 citation statements)

References 54 publications

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“…Here SW Drude /SW band is close to 1 for uncorrelated materials, while the ratio becomes 0 for Mott insulators showing the strongest correlation. The study of Wenzel et al shows that the ratio for RMn 6 Sn 6 is around 0.2, comparable to the cuprate superconductors La 2−x Sr x CuO 4 [87,177]. The result indicates much stronger correlations in comparison with the AV 3 Sb 5 series and other kagome metals reported to date.…”

Section: Discussionmentioning

confidence: 82%

“…The van Hove singularities, which are closely related to the CDW and the unconventional superconductivity, were also observed in the kagome superconductor AV 3 Sb 5 , where A = K, Cs, Rb (figures 1(f) and (g)) [39]. We have summarized recent materials hosting a transition-metalbased kagome lattice in table 1. In this Review, we highlight the kagome R166 (R = rare earths) magnet with RMn 6 Sn 6 being representative, where the quantum interactions within the pristine Mn kagome lattice and with the localized 4f electrons induce ample topological properties [52][53][54][77][78][79][80][81][82][83][84][85][86][87][88][89][90][91][92][93][94]. We first review the experimental visualizations of distinct kagome bands encoded in the unique crystal structure and magnetism.…”

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confidence: 99%

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Quantum interactions in topological R166 kagome magnet

Xu,

Yin,

et al. 2023

Rep. Prog. Phys.

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Kagome magnet has been found to be a fertile ground for the search of exotic quantum states in condensed matter. Arising from the unusual geometry, the quantum interactions in the kagome lattice give rise to various quantum states, including the Chern-gapped Dirac fermion, Weyl fermion, flat band and van Hove singularity. Here we review recent advances in the study of the R166 kagome magnet (RT6E6, R = rare earths; T = transition metals; and E = Sn, Ge, etc) whose crystal structure highlights the transition-metal-based kagome lattice and rare-earth sublattice. Compared with other kagome magnets, the R166 family owns the particularly strong interplays between the d electrons on the kagome site and the localized f electrons on the rare-earth site. In the form of spin-orbital coupling, exchange interaction and many-body effect, the quantum interactions play an essential role in the Berry curvature in both the reciprocal and real spaces of R166 family. We discuss the spectroscopic and transport visualization of the topological electrons hosted in the Mn kagome layer of RMn6Sn6 and the various topological effects due to the quantum interactions, including the Chern-gap opening, the exchange-biased effect, the topological Hall effect and the emergent inductance. We hope this work serves as a guide for future explorations of quantum magnets.

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Section: Discussionmentioning

confidence: 82%

mentioning

confidence: 99%

Quantum interactions in topological R166 kagome magnet

Xu,

Yin,

et al. 2023

Rep. Prog. Phys.

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“…In RMn 6 Sn 6 , the Mn based kagome sublattice exhibits ferromagnetic order and the magnetic interaction between Mn and different R yields complex magnetic states. In general, at room temperature, the magnetic coupling between the Mn moment and the light R elements is parallel, leading to a ferromagnetic state in RMn 6 Sn 6 (R = Nd, Sm) [19], while for heavy R elements, the coupling is antiparallel, resulting in a ferrimagnetic state in RMn 6 Sn 6 (R = Gd-Ho) [20][21][22][23][24][25][26]. RMn 6 Sn 6 exhibits antiferromagnetic state when the magnetic coupling is weak (R = Er, Tm) or the 4 f moment is absent (R = Y, Lu) [21,[27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Anomalous Hall effect and magnetic transition in the kagome material YbMn₆Sn₆

Jiang,

Fan,

Chen

et al. 2024

J. Phys.: Condens. Matter

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We investigate the magnetic and transport properties of a kagome magnet YbMn6Sn6. We have grown YbMn6Sn6 single crystals having a HfFe6Ge6 type structure with ordered Yb and Sn atoms, which is different from the distorted structure previously reported. The single crystal undergoes a ferromagnetic phase transition around 300 K and a ferrimagnetic transition at approximately 30 K, and the magnetic transition at low temperature may be correlated to the ordered Yb sublattice. Negative magnetoresistance has been observed at high temperatures, while the positive magnetoresistance appears at 5 K when the current is oriented out of kagome plane. We observe a large anisotropic anomalous Hall effect with the intrinsic Hall contribution

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“…[23] It has a rather large coercive field of 1.1 T. The time-reversal symmetry breaking and strong SOC yield a unique gapped Chern phase suitable for investigating topological fermions and their interaction with magnetization. [24,25] A recent report suggests superconducting states emerges at the interface between TbMn6Sn6 and a normal metal at extremely low temperatures, which might be a candidate for spin triplet superconducting. [14] In this Letter, we demonstrate the performance of our MOKE system by studying the Kerr rotation angle of TbMn6Sn6.…”

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confidence: 99%

Magneto-optic Kerr Effect Measurement of TbMn₆Sn₆ at mK Temperature

Huang 黄,

Wang 汪,

Wang 王

et al. 2024

Chinese Phys. Lett.

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Novel electron states stabilized by Coulomb interactions attract tremendous interests in condensed matter physics. These states are studied by corresponding phase transitions occurring at extreme conditions such as mK-temperatures and high magnetic field. In this work, we introduce a magneto-optical Kerr effect (MOKE) measurement system to comprehensively explore these phases in addition to conventional transport measurement. This system, composed of an all-fiber zero-loop Sagnac interferometer and in-situ piezo-scanner inside a dilution refrigerator, operates below 100 millikelvin, with a maximum field of 12 Tesla and has a resolution as small as 0.2 $\mu rad$. As a demonstration, we investigate TbMn$_6\mathrm{Sn}_6$, where the manganese atoms form Kagome lattice that hosts topological non-trivial Dirac cones. We observed two types of Kerr signals, stemming from its fully polarized ferromagnetic ground state and positive charged carriers within the Dirac-like dispersion.

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Effect of magnetism and phonons on localized carriers in the ferrimagnetic kagome metals GdMn6Sn6 and TbMn6Sn6

Cited by 11 publications

References 54 publications

Quantum interactions in topological R166 kagome magnet

Quantum interactions in topological R166 kagome magnet

Anomalous Hall effect and magnetic transition in the kagome material YbMn₆Sn₆

Magneto-optic Kerr Effect Measurement of TbMn₆Sn₆ at mK Temperature

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Effect of magnetism and phonons on localized carriers in the ferrimagnetic kagome metals GdMn6Sn6 and TbMn6Sn6

Cited by 11 publications

References 54 publications

Quantum interactions in topological R166 kagome magnet

Quantum interactions in topological R166 kagome magnet

Anomalous Hall effect and magnetic transition in the kagome material YbMn6Sn6

Magneto-optic Kerr Effect Measurement of TbMn6Sn6 at mK Temperature

Contact Info

Product

Resources

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Anomalous Hall effect and magnetic transition in the kagome material YbMn₆Sn₆

Magneto-optic Kerr Effect Measurement of TbMn₆Sn₆ at mK Temperature