MENU
  • Scitation Home
SUBMIT YOUR ARTICLE

Thank you

For your interest in the Applied Physics Letters

Check for updates on crossmark
Prev Next
No Access
Published Online: 04 February 2019
Accepted: January 2019

Role of hybridization and magnetic effects in massive Dirac cones: Magnetic topological heterostructures with controlled film thickness editors-pick

Appl. Phys. Lett. 114, 051602 (2019); https://doi.org/10.1063/1.5083059
Yuma Okuyama1, Ryo Ishikawa2, Shinji Kuroda2, and Toru Hirahara1,a)
more...View Affiliations
ABSTRACT
We fabricated MnBi2Se4/(n − 1) quintuple layer (QL) Bi2Se3 magnetic topological heterostructures (n = 1–6) and measured the Dirac cone dispersion with angle-resolved photoemission spectroscopy. We observed a clear gap opening for films with n = 2–6 and the gap size decreased as the film thickness increased. From magnetization measurements using SQUID, all the heterostructures showed hysteresis loops at 4 K and at room temperature, confirming that MnBi2Se4 is a room temperature van der Waals ferromagnet. We were able to distinguish the contribution of the hybridization and magnetic effects on the observed Dirac-cone gap directly using a four-band model and its implications on the behavior of the expected quantum anomalous Hall effect is discussed.
The authors thank S. Ichinokura and R. Akiyama for the discussions. The authors also thank Y. Tomohiro for the assistance in the magnetization measurement using SQUID. This work has been supported by the Grants-In-Aid from Japan Society for the Promotion of Science (No. 18H03877), the Toray Science Foundation, the Murata Science Foundation, the Asahi Glass Foundation, and the research support from the Tokyo Institute of Technology.

REFERENCES

  1. 1. M. Z. Hasan and C. L. Kane, Rev. Mod. Phys. 82, 3045 (2010). https://doi.org/10.1103/RevModPhys.82.3045, Google ScholarCrossref
  2. 2. X.-L. Qi and S.-C. Zhang, Rev. Mod. Phys. 83, 1057 (2011). https://doi.org/10.1103/RevModPhys.83.1057, Google ScholarCrossref
  3. 3. F. D. M. Haldane, Phys. Rev. Lett. 61, 2015 (1988). https://doi.org/10.1103/PhysRevLett.61.2015, Google ScholarCrossref
  4. 4. C. Z. Chang, J. Zhang, X. Feng, J. Shen, Z. Zhang, M. Guo, K. Li, Y. Ou, P. Wei, L. L. Wang et al., Science 340, 167 (2013). https://doi.org/10.1126/science.1234414, Google ScholarCrossref
  5. 5. A. J. Bestwick, E. J. Fox, X. Kou, L. Pan, K. L. Wang, and D. Goldhaber-Gordon, Phys. Rev. Lett. 114, 187201 (2015). https://doi.org/10.1103/PhysRevLett.114.187201, Google ScholarCrossref
  6. 6. C.-Z. Chang, W. Zhao, D. Y. Kim, H. Zhang, B. A. Assaf, D. Heiman, S.-C. Zhang, C. Liu, M. H. W. Chan, and J. S. Moodera, Nat. Mater. 14, 473 (2015). https://doi.org/10.1038/nmat4204, Google ScholarCrossref
  7. 7. M. Mogi, R. Yoshimi, A. Tsukazaki, K. Yasuda, Y. Kozuka, K. S. Takahashi, M. Kawasaki, and Y. Tokura, Appl. Phys. Lett. 107, 182401 (2015). https://doi.org/10.1063/1.4935075, Google ScholarScitation, ISI
  8. 8. A. V. Matetskiy, I. A. Kibirev, T. Hirahara, S. Hasegawa, A. V. Zotov, and A. A. Saranin, Appl. Phys. Lett. 107, 091604 (2015). https://doi.org/10.1063/1.4930151, Google ScholarScitation, ISI
  9. 9. T. Hirahara, S. V. Eremeev, T. Shirasawa, Y. Okuyama, T. Kubo, R. Nakanishi, R. Akiyama, A. Takayama, T. Hajiri, S.-I. Ideta et al., Nano Lett. 17, 3493 (2017). https://doi.org/10.1021/acs.nanolett.7b00560, Google ScholarCrossref
  10. 10. E. D. L. Rienks, S. Wimmer, P. S. Mandal, O. Caha, J. Růžička, A. Ney, H. Steiner, V. V. Volobuev, H. Groiss, M. Albu et al., preprint arXiv:1810.06238 (2018). Google Scholar
  11. 11. M. M. Otrokov, I. I. Klimovskikh, H.Bentmann, A. Zeugner, Z. S. Aliev, S. Gass, A. U. B. Wolter, A. V. Koroleva, D. Estyunin, A. M. Shikin et al., preprint arXiv:1809.07389 (2018). Google Scholar
  12. 12. Y. Sakamoto, T. Hirahara, H. Miyazaki, S.-I. Kimura, and S. Hasegawa, Phys. Rev. B 81, 165432 (2010). https://doi.org/10.1103/PhysRevB.81.165432, Google ScholarCrossref
  13. 13. Y. Zhang, K. He, C.-Z. Chang, C.-L. Song, L.-L. Wang, X. Chen, J.-F. Jia, Z. Fang, X. Dai, W.-Y. Shan et al., Nat. Phys. 6, 584 (2010). https://doi.org/10.1038/nphys1689, Google ScholarCrossref
  14. 14. X. Kou, L. Pan, J. Wang, Y. Fan, E. S. Choi, W.-L. Lee, T. Nie, K. Murata, Q. Shao, S.-C. Zhang, and K. L. Wang, Nat. Commun. 6, 8474 (2015). https://doi.org/10.1038/ncomms9474, Google ScholarCrossref
  15. 15. J. Wang, B. Lian, and S.-C. Zhang, Phys. Rev. B 89, 085106 (2014). https://doi.org/10.1103/PhysRevB.89.085106, Google ScholarCrossref
  16. 16. X. Feng, Y. Feng, J. Wang, Y. Ou, Z. Hao, C. Liu, Z. Zhang, L. Zhang, C. Lin, J. Liao et al., Adv. Mater. 28, 6386 (2016). https://doi.org/10.1002/adma.201600919, Google ScholarCrossref
  17. 17. G. Zhang, H. Qin, J. Teng, J. Guo, Q. Guo, X. Dai, Z. Fang, and K. Wu, Appl. Phys. Lett. 95, 053114 (2009). https://doi.org/10.1063/1.3200237, Google ScholarScitation, ISI
  18. 18. M. M. Otrokov, T. V. Menshchikova, M. G. Vergniory, I. P. Rusinov, A. Yu Vyazovskaya, Y. M. Koroteev, G. Bihlmayer, A. Ernst, P. M. Echenique, A. Arnau, and E. V. Chulkov, 2D Mater. 4, 025082 (2017). https://doi.org/10.1088/2053-1583/aa6bec, Google ScholarCrossref
  19. 19. D. Kim, P. Syers, N. P. Butch, J. Paglione, and M. S. Fuher, “ A weak localization analyses has shown that a small hybridization gap is present even for the 12 QL Bi2Se3 film,” Nat. Commun. 7, 11781 (2016). https://doi.org/10.1038/ncomms11781, Google ScholarCrossref
  1. Published under license by AIP Publishing.

Article Metrics

Views
999
Citations
Crossref 3
Web of Science
ISI 3

Altmetric

Please Note: The number of views represents the full text views from December 2016 to date. Article views prior to December 2016 are not included.