Anomalous high-field magnetotransport in CaFeAsF due to the quantum Hall effect
Source abstract
Abstract
Abstract CaFeAsF is an iron-based superconductor parent compound whose Fermi surface is quasi-two dimensional, composed of Dirac-electron and Schrödinger-hole cylinders elongated along the c axis. We measured the longitudinal and Hall resistivities in CaFeAsF with the electrical current in the ab plane in magnetic fields up to 45 T applied along the c axis and obtained the corresponding conductivities via tensor inversion. We found that both the longitudinal and Hall conductivities approached zero above ~40 T as the temperature was lowered to 0.4 K. Our analysis indicates that the Landau-level filling factor is ν = 2 for both electrons and holes at these high field strengths, resulting in a total filling factor ν = νhole − νelectron = 0. We therefore argue that the ν = 0 quantum Hall state emerges under these conditions.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Iron-based superconductors research · Physics of Superconductivity and Magnetism · Superconductivity in MgB2 and Alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (36)
Show source-provided references
1. Kamihara, Y., Watanabe, T., Hirano, M. & Hosono, H. Iron-based layered superconductor La[O1−xFx]FeAs (x = 0.05–0.12) with Tc = 26 K. J. Am. Chem. Soc. 130, 3296–3297 (2008).10.1021/ja800073m ↗
2. de la Cruz, C. et al. Magnetic order close to superconductivity in the iron-based layered LaO1−xFxFeAs systems. Nature 453, 899–902 (2008).10.1038/nature07057 ↗
3. Rotter, M. et al. Spin-density-wave anomaly at 140 K in the ternary iron arsenide BaFe2As2. Phys. Rev. B 78, 020503(R) (2008).10.1103/PhysRevB.78.020503 ↗
4. Rotter, M., Tegel, M. & Johrendt, D. Superconductivity at 38 K in the iron arsenide (Ba1−xKx)Fe2As2. Phys. Rev. Lett. 101, 107006 (2008).10.1103/PhysRevLett.101.107006 ↗
5. Sasmal, K. et al. Superconducting Fe-based compounds (A1−xSrx)Fe2As2 with A = K and Cs with transition temperatures up to 37 K. Phys. Rev. Lett. 101, 107007 (2008).10.1103/PhysRevLett.101.107007 ↗
6. Johnston, D. C. The puzzle of high temperature superconductivity in layered iron pnictides and chalcogenides. Adv. Phys. 59, 803–1061 (2010).10.1080/00018732.2010.513480 ↗
7. Ran, Y., Wang, F., Zhai, H., Vishwanath, A. & Lee, D.-H. Nodal spin density wave and band topology of the FeAs-based materials. Phys. Rev. B 79, 014505 (2009).10.1103/PhysRevB.79.014505 ↗
8. Morinari, T., Kaneshita, E. & Tohyama, T. Topological and transport properties of Dirac fermions in an antiferromagnetic metallic phase of iron-based superconductors. Phys. Rev. Lett. 105, 037203 (2010).10.1103/PhysRevLett.105.037203 ↗
9. Matsuishi, S. et al. Superconductivity induced by Co-doping in quaternary fluoroarsenide CaFeAsF. J. Am. Chem. Soc. 130, 14428–14429 (2008).10.1021/ja806357j ↗
10. Ma, Y. et al. Growth and characterization of millimeter-sized single crystals of CaFeAsF. Supercond. Sci. Technol. 28, 085008 (2015).10.1088/0953-2048/28/8/085008 ↗
11. Terashima, T. et al. Fermi surface with Dirac fermions in CaFeAsF determined via quantum oscillation measurements. Phys. Rev. X 8, 011014 (2018).
12. Masuda, H. et al. Quantum Hall effect in a bulk antiferromagnet EuMnBi2 with magnetically confined two-dimensional Dirac fermions. Sci. Adv. 2, e1501117 (2016).10.1126/sciadv.1501117 ↗
13. Cao, H. et al. Quantized Hall effect and Shubnikov–de Haas oscillations in highly doped Bi2Se3: evidence for layered transport of bulk carriers. Phys. Rev. Lett. 108, 216803 (2012).10.1103/PhysRevLett.108.216803 ↗
14. Ma, Y. et al. Magnetic-field-induced metal-insulator quantum phase transition in CaFeAsF near the quantum Limit. Sci. China.: Phys. Mech. Astron. 61, 127408 (2018).
15. Richards, F. E. Investigation of the magnetoresistance quantum oscillations in magnesium. Phys. Rev. B 8, 2552–2571 (1973).10.1103/PhysRevB.8.2552 ↗
16. Shoenberg, D. Magnetic Oscillations in Metals. (Cambridge University Press, Cambridge, 1984).10.1017/CBO9780511897870 ↗
17. Terashima, T., Uji, S., Wang, T. & Mu, G. Topological frequency shift of quantum oscillation in CaFeAsF. npj Quantum Mater. 7, 25 (2022).10.1038/s41535-022-00431-z ↗
18. Hurd, C. M. The Hall Effect in Metals and Alloys. (Plenum Press, New York, 1972).10.1007/978-1-4757-0465-5 ↗
19. Mendez, E. E., Esaki, L. & Chang, L. L. Quantum Hall effect in a two-dimensional electron-hole gas. Phys. Rev. Lett. 55, 2216–2219 (1985).10.1103/PhysRevLett.55.2216 ↗
20. Daly, M. S. et al. Zero-Hall-resistance state in a semimetallic InAs/GaSb superlattice. Phys. Rev. B 53, R10524–R10527 (1996).10.1103/PhysRevB.53.R10524 ↗
21. Nicholas, R. J. et al. Metal-insulator oscillations in a two-dimensional electron-hole system. Phys. Rev. Lett. 85, 2364–2367 (2000).10.1103/PhysRevLett.85.2364 ↗
22. Gusev, G. M. et al. Quantum Hall effect near the charge neutrality point in a two-dimensional electron-hole system. Phys. Rev. Lett. 104, 166401 (2010).10.1103/PhysRevLett.104.166401 ↗
23. Abanin, D. A. et al. Dissipative quantum Hall effect in graphene near the Dirac point. Phys. Rev. Lett. 98, 196806 (2007).10.1103/PhysRevLett.98.196806 ↗
24. Checkelsky, J. G., Li, L. & Ong, N. P. Zero-energy state in graphene in a high magnetic field. Phys. Rev. Lett. 100, 206801 (2008).10.1103/PhysRevLett.100.206801 ↗
25. Shklovskii, B. I. & Efros, A. L. Electronic Properties of Doped Semiconductors. (Springer-Verlag, Berlin, 1984).10.1007/978-3-662-02403-4 ↗
26. Gershenzon, E. M., II’in, V. A. & Litvak-Gorskaya, L. B. Influence of a magnetic field on the hopping conduction in n-type InSb. Sov. Phys. Semicond. 8, 189–191 (1974).
27. Ishida, S. & Otsuka, E. Galvanomagnetic properties of n-type InSb at low temperatures II. magnetic field-induced metal-nonmetal transition. J. Phys. Soc. Jpn. 43, 124–131 (1977).10.1143/JPSJ.43.124 ↗
28. Mansfield, R. & Kusztelan, L. Magnetoresistance and hall effect in n-type indium antimonide in the magnetic freeze-out region. J. Phys. Condens. Matter 11, 4157–4169 (1978).
29. Tokumoto, H., Mansfield, R. & Lea, M. Correlation effect in variable range hopping in n-InSb. Solid State Commun. 35, 961–964 (1980).10.1016/0038-1098(80)90996-5 ↗
30. Biskupski, G., Kaaouachi, A. E. & Briggs, A. Critical behaviour of the conductivity in metallic n-type InP close to the metal-insulator transition. J. Phys.: Condens. Matter 3, 8417–8424 (1991).
31. Chaikin, P. M. et al. Tetramethyltetraselenafulvalenium perchlorate, (TMTSF)2ClO4, in high magnetic fields. Phys. Rev. Lett. 51, 2333–2336 (1983).10.1103/PhysRevLett.51.2333 ↗
32. Ribault, M. et al. Quantum Hall effect and Fermi surface instabilities in (TMTSF)2ClO4. J. Phys. Lett. 45, 935–941 (1984).10.1051/jphyslet:019840045019093500 ↗
33. Cooper, J. R. et al. Quantized Hall effect and a new field-induced phase transition in the organic superconductor (TMTSF)2PF6. Phys. Rev. Lett. 63, 1984–1987 (1989).10.1103/PhysRevLett.63.1984 ↗
34. Hannahs, S. T., Brooks, J. S., Kang, W., Chiang, L. Y. & Chaikin, P. M. Quantum Hall effect in a bulk crystal. Phys. Rev. Lett. 63, 1988–1991 (1989).10.1103/PhysRevLett.63.1988 ↗
35. Hill, S. et al. Bulk Quantum Hall effect in η − Mo4O11. Phys. Rev. B 58, 10778–10783 (1998).10.1103/PhysRevB.58.10778 ↗
36. Tang, F. et al. Three-dimensional quantum Hall effect and metal–insulator transition in ZrTe5. Nature 569, 537–541 (2019).10.1038/s41586-019-1180-9 ↗