Gate-defined quantum confinement in suspended bilayer graphene

Nature Communications

Volumn 3, Issue , 2012, Pages

  Allen, M T ^a   Martin, J ^a,b   Yacoby, A ^a  

^a HARVARD UNIVERSITY   (United States)

^b UNIVERSITY OF EXETER   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

GRAPHENE; QUANTUM DOT;

ARTICLE; ELECTRIC FIELD; GEOMETRY; MAGNETIC FIELD; NANOFABRICATION; OSCILLATION; SIMULATION; STATIC ELECTRICITY; VIBRATION;

EID: 84864846438     PISSN: None     EISSN: 20411723     Source Type: Journal    
DOI: 10.1038/ncomms1945     Document Type: Article

References (38)

1. Meric, I. et al. Current saturation in zero-bandgap, top-gated graphene field-effect transistors. Nat. Nanotech. 3, 654-659 (2008).
2. Stampfer, C. et al. Tunable Coulomb blockade in nanostructured graphene. Appl. Phys. Lett. 92, 012102 (2008).
3. Ponomarenko, L. A. et al. Chaotic Dirac billiard in graphene quantum dots. Science 320, 356-358 (2008). (Pubitemid 351555654)
4. Novoselov, K. S. et al. Two-dimensional gas of massless Dirac fermions in graphene. Nature 438, 197-200 (2005). (Pubitemid 41599867)
5. CastroNeto, A. H., Guinea, F., Peres, N. M. R., Novoselov, K. S. & Geim, A. K. The electronic properties of graphene. Rev. Mod. Phys. 81, 109-162 (2009).
6. Trauzettel, B., Bulaev, D. V., Loss, D. & Burkard, G. Spin qubits in graphene quantum dots. Nat. Phys. 3, 192-196 (2007).
7. Khaetskii, A. V., Loss, D. & Glazman, L. Electron spin decoherence in quantum dots due to interaction with nuclei. Phys. Rev. Lett. 88, 186802 (2002).
8. Petta, J. R. et al. Coherent manipulation of coupled electron spins in semiconductor quantum dots. Science 309, 2180-2184 (2005). (Pubitemid 41396061)
9. Koppens, F. H. L. et al. Driven coherent oscillations of a single electron spin in a quantum dot. Nature 442, 766-771 (2006). (Pubitemid 44261899)
10. Recher, P., Nilsson, J., Burkard, G. & Trauzettel, B. Bound states and magnetic field induced valley splitting in gate-Tunable graphene quantum dots. Phys. Rev. B 79, 085407 (2009).
11. Wu, G. Y., Lue, N. Y. & Chang, L. Graphene quantum dots for valley-based quantum computing: A feasibility study, Preprint at http://arxiv.org/abs/1104.0443 (2011).
12. Culcer, D., Cywinski, L., Li, Q., Hu, X. & DasSarma, S. Quantum dot spin qubits in silicon: Multivalley physics. Phys. Rev. B 82, 155312 (2010).
13. Todd, K., Chou, H., Amasha, S. & Goldhaber-Gordon, D. Quantum dot behavior in graphene nanoconstrictions. Nano Lett. 9, 416-421 (2008).
14. Martin, J. et al. Observation of electron-hole puddles in graphene using a scanning single-electron transistor. Nat. Phys. 4, 144-148 (2008).
15. Molitor, F. et al. Transport through graphene double dots. Appl. Phys. Lett. 94, 222107 (2009).
16. Liu, X. L., Hug, D. & Vandersypen, L. M. K. Gate-defined graphene double quantum dot and excited state spectroscopy. Nano. Lett. 10, 1623-1627 (2010).
17. Wang, X. et al. Graphene nanoribbons with smooth edges behave as quantum wires. Nat. Nanotech. 6, 563-567 (2011).
18. Pereira, J. M., Vasilopoulos, P. & Peeters, F. M. Tunable quantum dots in bilayer graphene. Nano Lett. 7, 946-949 (2007). (Pubitemid 46717738)
19. McCann, E. & Fal'ko, V. I. Landau-level degeneracy and quantum Hall effect in a graphite bilayer. Phys. Rev. Lett. 96, 086805 (2006).
20. McCann, E. Asymmetry gap in the electronic band structure of bilayer graphene. Phys. Rev. B 74, 161403 (2006).
21. Castro, E. V. et al. Biased bilayer graphene: Semiconductor with a gap tunable by the electric field effect. Phys. Rev. Lett. 99, 216802 (2007).
22. Oostinga, J. B., Heerche, H. B., Liu, X., Morpurgo, A. F. & Vandersypen, L. M. K. Gate-induced insulating state in bilayer graphene devices. Nat. Mater. 7, 151-157 (2007). (Pubitemid 351161346)
23. Zhang, Y. et al. Direct observation of a widely tunable bandgap in bilayer graphene. Nature 459, 820-823 (2009).
24. Xia, F., Farmer, D. B., Lin, Y. & Avouris, P. Graphene field-effect transistors with high on/off current ratio and large transport band gap at room temperature. Nano. Lett. 10, 715-718 (2010).
25. Taychatanapat, T. & Jarillo-Herrero, P. Electronic transport in dual-gated bilayer graphene at large displacement fields. Phys. Rev. Lett. 106, 166601 (2010).
26. Nomura, K. & MacDonald, A. H. Quantum Hall ferromagnetism in graphene. Phys. Rev. Lett. 96, 256602 (2006).
27. Feldman, B. E., Martin, J. & Yacoby, A. Broken symmetry states and divergent resistance in suspended bilayer graphene. Nat. Phys. 5, 889-893 (2009).
28. Zhao, Y., Cadden-Zimansky, P., Jiang, Z. & Kim, P. Symmetry breaking in the zero-energy Landau level in bilayer graphene. Phys. Rev. Lett. 104, 066801 (2010).
29. Martin, J., Feldman, B. E., Weitz, R. T., Allen, M. T. & Yacoby, A. Local compressibility measurements of correlated states in suspended bilayer graphene. Phys. Rev. Lett. 105, 256806 (2010).
30. Weitz, R. T., Allen, M. T., Feldman, B. E., Martin, J. & Yacoby, A. Broken-symmetry states in doubly gated suspended bilayer graphene. Science 330, 812-816 (2010).
31. Martin, I., Morpurgo, Y. M. & Morpurgo, A. F. Topological confinement in bilayer graphene. Phys. Rev. Lett. 100, 036804 (2008).
32. Chklovskii, D. B., Shklovskii, B. I. & Glazman, L. I. Electrostatics of edge channels. Phys. Rev. B 46, 4026-4034 (1992).
33. Leturcq, R. et al. Franck Condon blockade in suspended carbon nanotube quantum dots. Nat. Phys. 5, 327-331 (2009).
34. Steele, G. A. et al. Strong coupling between single-electron tunneling and nanomechanical motion. Science 325, 1103-1107 (2009).
35. Shytov, A. V., Levitov, L. S. & Beenakker, C. W. J. Electromechanical noise in a diffusive conductor. Phys. Rev. Lett. 88, 228303 (2002).
36. LaHaye, M. D., Buu, O., Camarota, B. & Schwab, K. C. Approaching the quantum limit of a nanomechanical resonator. Science 304, 74-77 (2004). (Pubitemid 38451458)
37. Bunch, J. S. et al. Electromechanical resonators from graphene sheets. Science 315, 490-493 (2007). (Pubitemid 46178391)
38. Chen, C. et al. Performance of monolayer graphene nanomechanical resonators with electrical readout. Nat. Nanotech. 4, 861-867 (2009).