Tunable anomalous Hall conductivity through volume-wise magnetic competition in a topological kagome magnet

Z. Guguchia; J. A.T. Verezhak; D. J. Gawryluk; S. S. Tsirkin; J. X. Yin; I. Belopolski; H. Zhou; G. Simutis; S. S. Zhang; T. A. Cochran; G. Chang; E. Pomjakushina; L. Keller; Z. Skrzeczkowska; Q. Wang; H. C. Lei; R. Khasanov; A. Amato; S. Jia; T. Neupert; H. Luetkens; M. Z. Hasan

doi:10.1038/s41467-020-14325-w

Tunable anomalous Hall conductivity through volume-wise magnetic competition in a topological kagome magnet

Z. Guguchia, J. A.T. Verezhak, D. J. Gawryluk, S. S. Tsirkin, J. X. Yin, I. Belopolski, H. Zhou, G. Simutis, S. S. Zhang, T. A. Cochran, G. Chang, E. Pomjakushina, L. Keller, Z. Skrzeczkowska, Q. Wang, H. C. Lei, R. Khasanov, A. Amato, S. Jia, T. NeupertH. Luetkens, M. Z. Hasan

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Abstract

Magnetic topological phases of quantum matter are an emerging frontier in physics and material science. Along these lines, several kagome magnets have appeared as the most promising platforms. Here, we explore magnetic correlations in the kagome magnet Co₃Sn₂S₂. Using muon spin-rotation, we present evidence for competing magnetic orders in the kagome lattice of this compound. Our results show that while the sample exhibits an out-of-plane ferromagnetic ground state, an in-plane antiferromagnetic state appears at temperatures above 90 K, eventually attaining a volume fraction of 80% around 170 K, before reaching a non-magnetic state. Strikingly, the reduction of the anomalous Hall conductivity (AHC) above 90 K linearly follows the disappearance of the volume fraction of the ferromagnetic state. We further show that the competition of these magnetic phases is tunable through applying either an external magnetic field or hydrostatic pressure. Our results taken together suggest the thermal and quantum tuning of Berry curvature induced AHC via external tuning of magnetic order.

Original language	English (US)
Article number	559
Journal	Nature communications
Volume	11
Issue number	1
DOIs	https://doi.org/10.1038/s41467-020-14325-w
State	Published - Dec 1 2020

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)
Chemistry(all)
Biochemistry, Genetics and Molecular Biology(all)

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10.1038/s41467-020-14325-w

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Guguchia, Z., Verezhak, J. A. T., Gawryluk, D. J., Tsirkin, S. S., Yin, J. X., Belopolski, I., Zhou, H., Simutis, G., Zhang, S. S., Cochran, T. A., Chang, G., Pomjakushina, E., Keller, L., Skrzeczkowska, Z., Wang, Q., Lei, H. C., Khasanov, R., Amato, A., Jia, S., ... Hasan, M. Z. (2020). Tunable anomalous Hall conductivity through volume-wise magnetic competition in a topological kagome magnet. Nature communications, 11(1), Article 559. https://doi.org/10.1038/s41467-020-14325-w

@article{66d8807eb48c427c97c7081ffeefd4ae,

title = "Tunable anomalous Hall conductivity through volume-wise magnetic competition in a topological kagome magnet",

abstract = "Magnetic topological phases of quantum matter are an emerging frontier in physics and material science. Along these lines, several kagome magnets have appeared as the most promising platforms. Here, we explore magnetic correlations in the kagome magnet Co3Sn2S2. Using muon spin-rotation, we present evidence for competing magnetic orders in the kagome lattice of this compound. Our results show that while the sample exhibits an out-of-plane ferromagnetic ground state, an in-plane antiferromagnetic state appears at temperatures above 90 K, eventually attaining a volume fraction of 80% around 170 K, before reaching a non-magnetic state. Strikingly, the reduction of the anomalous Hall conductivity (AHC) above 90 K linearly follows the disappearance of the volume fraction of the ferromagnetic state. We further show that the competition of these magnetic phases is tunable through applying either an external magnetic field or hydrostatic pressure. Our results taken together suggest the thermal and quantum tuning of Berry curvature induced AHC via external tuning of magnetic order.",

author = "Z. Guguchia and Verezhak, {J. A.T.} and Gawryluk, {D. J.} and Tsirkin, {S. S.} and Yin, {J. X.} and I. Belopolski and H. Zhou and G. Simutis and Zhang, {S. S.} and Cochran, {T. A.} and G. Chang and E. Pomjakushina and L. Keller and Z. Skrzeczkowska and Q. Wang and Lei, {H. C.} and R. Khasanov and A. Amato and S. Jia and T. Neupert and H. Luetkens and Hasan, {M. Z.}",

note = "Publisher Copyright: {\textcopyright} 2020, The Author(s).",

year = "2020",

month = dec,

day = "1",

doi = "10.1038/s41467-020-14325-w",

language = "English (US)",

volume = "11",

journal = "Nature communications",

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Guguchia, Z, Verezhak, JAT, Gawryluk, DJ, Tsirkin, SS, Yin, JX, Belopolski, I, Zhou, H, Simutis, G, Zhang, SS, Cochran, TA, Chang, G, Pomjakushina, E, Keller, L, Skrzeczkowska, Z, Wang, Q, Lei, HC, Khasanov, R, Amato, A, Jia, S, Neupert, T, Luetkens, H & Hasan, MZ 2020, 'Tunable anomalous Hall conductivity through volume-wise magnetic competition in a topological kagome magnet', Nature communications, vol. 11, no. 1, 559. https://doi.org/10.1038/s41467-020-14325-w

TY - JOUR

T1 - Tunable anomalous Hall conductivity through volume-wise magnetic competition in a topological kagome magnet

AU - Guguchia, Z.

AU - Verezhak, J. A.T.

AU - Gawryluk, D. J.

AU - Tsirkin, S. S.

AU - Yin, J. X.

AU - Belopolski, I.

AU - Zhou, H.

AU - Simutis, G.

AU - Zhang, S. S.

AU - Cochran, T. A.

AU - Chang, G.

AU - Pomjakushina, E.

AU - Keller, L.

AU - Skrzeczkowska, Z.

AU - Wang, Q.

AU - Lei, H. C.

AU - Khasanov, R.

AU - Amato, A.

AU - Jia, S.

AU - Neupert, T.

AU - Luetkens, H.

AU - Hasan, M. Z.

PY - 2020/12/1

Y1 - 2020/12/1

N2 - Magnetic topological phases of quantum matter are an emerging frontier in physics and material science. Along these lines, several kagome magnets have appeared as the most promising platforms. Here, we explore magnetic correlations in the kagome magnet Co3Sn2S2. Using muon spin-rotation, we present evidence for competing magnetic orders in the kagome lattice of this compound. Our results show that while the sample exhibits an out-of-plane ferromagnetic ground state, an in-plane antiferromagnetic state appears at temperatures above 90 K, eventually attaining a volume fraction of 80% around 170 K, before reaching a non-magnetic state. Strikingly, the reduction of the anomalous Hall conductivity (AHC) above 90 K linearly follows the disappearance of the volume fraction of the ferromagnetic state. We further show that the competition of these magnetic phases is tunable through applying either an external magnetic field or hydrostatic pressure. Our results taken together suggest the thermal and quantum tuning of Berry curvature induced AHC via external tuning of magnetic order.

AB - Magnetic topological phases of quantum matter are an emerging frontier in physics and material science. Along these lines, several kagome magnets have appeared as the most promising platforms. Here, we explore magnetic correlations in the kagome magnet Co3Sn2S2. Using muon spin-rotation, we present evidence for competing magnetic orders in the kagome lattice of this compound. Our results show that while the sample exhibits an out-of-plane ferromagnetic ground state, an in-plane antiferromagnetic state appears at temperatures above 90 K, eventually attaining a volume fraction of 80% around 170 K, before reaching a non-magnetic state. Strikingly, the reduction of the anomalous Hall conductivity (AHC) above 90 K linearly follows the disappearance of the volume fraction of the ferromagnetic state. We further show that the competition of these magnetic phases is tunable through applying either an external magnetic field or hydrostatic pressure. Our results taken together suggest the thermal and quantum tuning of Berry curvature induced AHC via external tuning of magnetic order.

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U2 - 10.1038/s41467-020-14325-w

DO - 10.1038/s41467-020-14325-w

M3 - Article

C2 - 31992705

AN - SCOPUS:85078469504

SN - 2041-1723

VL - 11

JO - Nature communications

JF - Nature communications

IS - 1

M1 - 559

ER -

Tunable anomalous Hall conductivity through volume-wise magnetic competition in a topological kagome magnet

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