Artículos de revistas
Bosonization Approach For Bilayer Quantum Hall Systems At νt=1
Registro en:
Physical Review Letters. , v. 97, n. 18, p. - , 2006.
319007
10.1103/PhysRevLett.97.186401
2-s2.0-33750567515
Autor
Doretto R.L.
Caldeira A.O.
Smith C.M.
Institución
Resumen
We develop a nonperturbative bosonization approach for bilayer quantum Hall systems at νT=1, which allows us to systematically study the existence of an exciton condensate in these systems. An effective boson model is derived and the excitation spectrum is calculated in both the Bogoliubov and the Popov approximations. In the latter case, we show that the ground state of the system is an exciton condensate only when the distance between the layers is very small compared to the magnetic length, indicating that the system possibly undergoes another phase transition before the incompressible-compressible one. The effect of a finite electron interlayer tunneling is included and a quantitative phase diagram is proposed. © 2006 The American Physical Society. 97 18
(1997) Perspectives in Quantum Hall Effects, , edited by S. Das Sarma and A. Pinczuk (Wiley, New York) Eisenstein, J.P., MacDonald, A.H., (2004) Nature (London), 432, p. 691. , NATUAS 0028-0836 10.1038/nature03081 Eisenstein, J.P., (2004) Science, 305, p. 950. , SCIEAS 0036-8075 10.1126/science.1099386 Murphy, S.Q., (1994) Phys. Rev. Lett., 72, p. 728. , PRLTAO 0031-9007 10.1103/PhysRevLett.72.728 Girvin, S.M., cond-mat/0108181Spielman, I.B., (2000) Phys. Rev. Lett., 84, p. 5808. , PRLTAO 0031-9007 10.1103/PhysRevLett.84.5808 Spielman, I.B., (2001) Phys. Rev. Lett., 87, p. 036803. , PRLTAO 0031-9007 10.1103/PhysRevLett.87.036803 Fertig, H.A., Straley, J.P., (2003) Phys. Rev. Lett., 91, p. 046806. , PRLTAO 0031-9007 10.1103/PhysRevLett.91.046806 Kellogg, M., (2004) Phys. Rev. Lett., 93, p. 036801. , PRLTAO 0031-9007 10.1103/PhysRevLett.93.036801 Wiersma, R.D., (2004) Phys. Rev. Lett., 93, p. 266805. , PRLTAO 0031-9007 10.1103/PhysRevLett.93.266805 Wen, X.G., Zee, A., (1992) Phys. Rev. Lett., 69, p. 1811. , PRLTAO 0031-9007 10.1103/PhysRevLett.69.1811 Fertig, H.A., (1989) Phys. Rev. B, 40, p. 1087. , PRBMDO 0163-1829 10.1103/PhysRevB.40.1087 MacDonald, A.H., (1990) Phys. Rev. Lett., 65, p. 775. , PRLTAO 0031-9007 10.1103/PhysRevLett.65.775 Joglekar, Y.N., MacDonald, A.H., (2001) Phys. Rev. B, 64, p. 155315. , PRBMDO 0163-1829 10.1103/PhysRevB.64.155315 Fertig, H.A., Murthy, G., (2005) Phys. Rev. Lett., 95, p. 156802. , PRLTAO 0031-9007 10.1103/PhysRevLett.95.156802 Doretto, R.L., Caldeira, A.O., Girvin, S.M., (2005) Phys. Rev. B, 71, p. 045339. , PRBMDO 0163-1829 10.1103/PhysRevB.71.045339 Kallin, C., Halperin, B.I., (1984) Phys. Rev. B, 30, p. 5655. , PRBMDO 0163-1829 10.1103/PhysRevB.30.5655 Fetter, A.L., Walecka, J.D., (2003) Quantum Theory of Many-Particle Systems, , Dover, Mineola Stoof, H.T.C., Bijlsma, M., (1993) Phys. Rev. E, 47, p. 939. , PLEEE8 1063-651X 10.1103/PhysRevE.47.939 Shi, H., Griffin, A., (1998) Phys. Rep., 304, p. 1. , PRPLCM 0370-1573 10.1016/S0370-1573(98)00015-5 Chen, X.M., Quinn, J.J., (1992) Phys. Rev. B, 45, p. 11054. , PRBMDO 0163-1829 10.1103/PhysRevB.45.11054