Large intrinsic anomalous Hall effect in half-metallic ferromagnet Co3Sn2S2 with magnetic Weyl fermions

Abstract

The origin of anomalous Hall effect (AHE) in magnetic materials is one of the most intriguing aspects in condensed matter physics and has been a controversial topic for a long time. Recent studies indicate that the intrinsic AHE is closely related to the Berry curvature of occupied electronic states. In a magnetic Weyl semimetal with broken time-reversal symmetry, there are significant contributions to Berry curvature around Weyl nodes, possibly leading to a large intrinsic AHE. Here, we report the quite large AHE in the half-metallic ferromagnet Co 3 Sn 2 S 2 single crystal. By systematically mapping out the electronic structure of Co 3 Sn 2 S 2 both theoretically and experimentally, we demonstrate that the intrinsic AHE from the Weyl fermions near the Fermi energy is dominating. The intrinsic anomalous Hall conductivity depends linearly on the magnetization and can be reproduced by theoretical simulation, in which the Weyl nodes monotonically move with the constrained magnetic moment on Co atom.

Full text

Its licence does not allow us to show the full text. Read it at PubMed Central:

References 48

1. 1.

   Hall EH. On a new action of the magnet on electric currents. Am. J. Math. 1879;2:287-292.

   Not in our library10.2307/2369245

2. 2.

   Hall EH. On the new action of magnetism on a permanent electric current. Philos. Mag. 1880;10:301-328.

   Not in our library10.1080/14786448008626936

3. 3.

   Hall EH. On the “Rotational coefficient” in nickel and cobalt. Philos. Mag. 1881;12:157-172.

   Not in our library10.1080/14786448108627086

4. 4.

   Hurd CM. The Hall Effect in Metals and Alloys. 1972.

   Not in our library

5. 5.

   Chien CL, Westgate CR. The Hall Effect and Its Applications. 1980.

   Not in our library

6. 6.

   Nagaosa N, Sinova J, Onoda S, MacDonald AH, Ong NP. Anomalous Hall effect. Rev. Mod. Phys. 2010;82:1539-1592.

   Not in our library10.1103/revmodphys.82.1539

7. 7.

   Smit J. The spontaneous Hall effect in ferromagnetics I. Physica. 1955;21:877-887.

   Not in our library10.1016/s0031-8914(55)92596-9

8. 8.

   Smit J. The spontaneous Hall effect in ferromagnetics II. Physica. 1958;24:39-51.

   Not in our library10.1016/s0031-8914(58)93541-9

9. 9.

   Berger L. Side-jump mechanism for the Hall effect of ferromagnets. Phys. Rev. B. 1970;2:4559-4566.

   Not in our library10.1103/physrevb.2.4559

10. 10.

    Karplus R, Luttinger JM. Hall effect in ferromagnetics. Phys. Rev. 1954;95:1154-1160.

    Not in our library10.1103/physrev.95.1154

11. 11.

    Jungwirth T, Niu Q, MacDonald AH. Anomalous Hall effect in ferromagnetic semiconductors. Phys. Rev. Lett. 2002;88:207208.

    Not in our library10.1103/physrevlett.88.207208

12. 12.

    Onoda M, Nagaosa N. Quantized anomalous Hall effect in two-dimensional ferromagnets: quantum Hall effect in metals. Phys. Rev. Lett. 2003;90:206601.

    Not in our library10.1103/physrevlett.90.206601

13. 13.

    Haldane FDM. Berry curvature on the fermi surface: anomalous Hall effect as a topological fermi-liquid property. Phys. Rev. Lett. 2004;93:206602.

    Not in our library10.1103/physrevlett.93.206602

14. 14.

    Yao YG, et al. First principles calculation of anomalous Hall conductivity in ferromagnetic bcc Fe. Phys. Rev. Lett. 2004;92:037204.

    Not in our library10.1103/physrevlett.92.037204

15. 15.

    Burkov AA, Hook MD, Balents L. Topological nodal semimetals. Phys. Rev. B. 2011;84:235126.

    Not in our library10.1103/physrevb.84.235126

16. 16.

    Wan X, Turner AM, Vishwanath A, Savrasov SY. Topological semimetal and Fermi-arc surface states in the electronic structure of pyrochlore iridates. Phys. Rev. B. 2011;83:205101.

    Not in our library10.1103/physrevb.83.205101

17. 17.

    Xu G, Weng H, Wang Z, Dai X, Fang Z. Chern semimetal and the quantized anomalous Hall effect in HgCr2Se4. Phys. Rev. Lett. 2011;107:186806.

    Not in our library10.1103/physrevlett.107.186806

18. 18.

    Wang Z, et al. Dirac semimetal and topological phase transitions in A3Bi (A = Na, K, Rb). Phys. Rev. B. 2012;85:195320.

    Not in our library10.1103/physrevb.85.195320

19. 19.

    Liu ZK, et al. Discovery of a three-dimensional topological Dirac semimetal, Na3Bi. Science. 2014;343:864-867.

    Not in our library10.1126/science.1245085

20. 20.

    Weng H, Fang C, Fang Z, Bernevig BA, Dai X. Weyl semimetal phase in noncentrosymmetric transition-metal monophosphides. Phys. Rev. X. 2015;5:011029.

    Not in our library

21. 21.

    Xu SY, et al. Discovery of a Weyl Fermion semimetal and topological Fermi arcs. Science. 2015;349:613-618.

    Not in our library10.1126/science.aaa9297

22. 22.

    Lv BQ, et al. Experimental discovery of Weyl semimetal TaAs. Phys. Rev. X. 2015;5:031013.

    Not in our library

23. 23.

    Fang Z, et al. The anomalous Hall effect and magnetic monopoles in momentum space. Science. 2003;302:93-95.

    Not in our library10.1126/science.1089408

24. 24.

    Burkov AA. Anomalous Hall effect in Weyl metals. Phys. Rev. Lett. 2014;113:187202.

    Not in our library10.1103/physrevlett.113.187202

25. 25.

    Ludbrook BM, Ruck BJ, Granville S. Perpendicular magnetic anisotropy in Co3MnGa and its anomalous Hall effect. Appl. Phys. Lett. 2017;110:062408.

    Not in our library10.1063/1.4976078

26. 26.

    Otto MJ, et al. Half-metallic ferromagnets II. Transport properties of NiMnSb and related inter-metallic compounds. J. Phys. Condens. Matter. 1989;1:2351-2360.

    Not in our library10.1088/0953-8984/1/13/008

27. 27.

    de Groot RA, Mueller FM, Engen PGv, Buschow KHJ. New class of materials: half-metallic ferromagnets. Phys. Rev. Lett. 1983;50:2024-2027.

    Not in our library10.1103/physrevlett.50.2024

28. 28.

    Vaqueiro P, Sobany GG. A powder neutron diffraction study of the metallic ferromagnet Co3Sn2S2. Solid State Sci. 2009;11:513-518.

    Not in our library10.1016/j.solidstatesciences.2008.06.017

29. 29.

    Kubodera T, Okabe H, Kamihara Y, Matoba M. Ni substitution effect on magnetic and transport properties in metallic ferromagnet Co3Sn2S2. Phys. B. 2006;378–380:1142-1143.

    Not in our library10.1016/j.physb.2006.01.458

30. 30.

    Schnelle W, et al. Ferromagnetic ordering and half-metallic state of Sn2Co3S2 with the shandite-type structure. Phys. Rev. B. 2013;88:144404.

    Not in our library10.1103/physrevb.88.144404

31. 31.

    Coey JMD, Sanvito S. Magnetic semiconductors and half-metals. J. Phys. D. Appl. Phys. 2004;37:988-993.

    Not in our library10.1088/0022-3727/37/7/005

32. 32.

    Yu R, Qi XL, Bernevig A, Fang Z, Dai X. Equivalent expression of Z2 topological invariant for band insulators using the non-Abelian Berry connection. Phys. Rev. B. 2011;84:075119.

    Not in our library10.1103/physrevb.84.075119

33. 33.

    Sancho MPL, Sancho JML, Sancho JML, Rubio J. Highly convergent schemes for the calculation of bulk and surface Green functions. J. Phys. F Met. Phys. 1985;15:851-858.

    Not in our library10.1088/0305-4608/15/4/009

34. 34.

    Wu Q, Zhang S, Song HF, Troyer M, Soluyanov AA. WannierTools: an open-source software package for novel topological materials. Comp. Phys. Commun. 2018;224:405-416.

    Not in our library10.1016/j.cpc.2017.09.033

35. 35.

    Strocov VN. Intrinsic accuracy in 3-dimensional photoemission band mapping. J. Electron Spectrosc. Relat. Phenom. 2003;130:65-78.

    Not in our library10.1016/s0368-2048(03)00054-9

36. 36.

    Kumigashira H, et al. High-resolution angle-resolved photoemission study of LaSb. Phys. Rev. B. 1998;58:7675-7680.

    Not in our library10.1103/physrevb.58.7675

37. 37.

    Takane D, et al. Dirac-node arc in the topological line-node semimetal HfSiS. Phys. Rev. B. 2016;94:121108(R).

    Not in our library10.1103/physrevb.94.121108

38. 38.

    Volkenshtein NV, Fedorov GV. Temperature dependence of the Hall effect of pure ferromagnets. Sov. Phys. JETP. 1960;11:48-50.

    Not in our library

39. 39.

    Kaul SN. Anomalous Hall effect in nickel and nickel-rich nickel–copper alloys. Phys. Rev. B. 1979;20:5122-5130.

    Not in our library10.1103/physrevb.20.5122

40. 40.

    Zeng C, Yao Y, Niu Q, Weitering HH. Linear magnetization dependence of the intrinsic anomalous Hall effect. Phys. Rev. Lett. 2006;96:037204.

    Not in our library10.1103/physrevlett.96.037204

Cited by papers we hold 3

• The Magnetic Genome of Two-Dimensional van der Waals Materials · 2022
  No notice
• Recent advancements in the study of intrinsic magnetic topological insulators and magnetic Weyl semimetals · 2020
  Not checked
• Tunable anomalous Hall conductivity through volume-wise magnetic competition in a topological kagome magnet · 2020
  Not checked

Reads

A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.