Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.


Could use a break

Electric fields can controllably break the inversion symmetry of bilayer graphene, which can be harnessed to generate pure valley currents.

This is a preview of subscription content, access via your institution

Relevant articles

Open Access articles citing this article.

Access options

Rent or buy this article

Prices vary by article type



Prices may be subject to local taxes which are calculated during checkout

Figure 1: Valley Hall effect.


  1. Xiao, D., Chang, M.-C. & Niu, Q. Rev. Mod. Phys. 82, 1959 (2010).

    Article  ADS  Google Scholar 

  2. Sui, M. et al. Nature Phys. 11, 1027–1031 (2015).

    Article  ADS  Google Scholar 

  3. Shimazaki, Y. et al. Nature Phys. 11, 1032–1036 (2015).

    Article  ADS  Google Scholar 

  4. Xiao, D., Yao, W. & Niu, Q. Phys. Rev. Lett. 99, 236809 (2007).

    Article  ADS  Google Scholar 

  5. Datta, S. & Das, B. Appl. Phys. Lett. 56, 665 (1990).

    Article  ADS  Google Scholar 

  6. Mak, K. F., McGill, K. L., Park, J. & McEuen, P. Science 344, 1489–1492 (2014).

    Article  ADS  Google Scholar 

  7. Zhang, Y., Tan, Y.-W., Stormer, H. L. & Kim, P. Nature 438, 201–204 (2005).

    Article  ADS  Google Scholar 

  8. Song, J. C. W., Samutpraphoot, P. & Levitov, L. S. Proc. Natl Acad. Sci. USA 112, 10879–10883 (2015).

    Article  ADS  MathSciNet  Google Scholar 

  9. Gorbachev, R. V. et al. Science 346, 448–451 (2014).

    Article  ADS  Google Scholar 

  10. Abanin, D. A., Shytov, A. V., Levitov, L. S. & Halperin, B. I. Phys. Rev. B 79, 035304 (2009).

    Article  ADS  Google Scholar 

  11. Castro, E. V. et al. Phys. Rev. Lett. 99, 216802 (2007).

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations


Corresponding authors

Correspondence to François Amet or Gleb Finkelstein.

Rights and permissions

Reprints and Permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Amet, F., Finkelstein, G. Could use a break. Nature Phys 11, 989–990 (2015).

Download citation

  • Published:

  • Issue Date:

  • DOI:

This article is cited by


Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing