Anomalous structure in the single particle spectrum of the fractional quantum Hall effect

Nature

Volumn 464, Issue 7288, 2010, Pages 566-570

  Dial, O E ^a   Ashoori, R C ^a   Pfeiffer, L N ^b,c   West, K W ^b,c  

^a MASSACHUSETTS INSTITUTE OF TECHNOLOGY   (United States)

^b LUCENT TECHNOLOGIES   (United States)

^c PRINCETON UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRON; KINETIC ENERGY; MAGNETIC FIELD; QUANTUM MECHANICS; SPECTRUM;

ARTICLE; DENSITY; ELECTRON TRANSPORT; ENERGY; FERMION; LOW TEMPERATURE; MAGNETIC FIELD; MOLECULAR INTERACTION; PRIORITY JOURNAL; QUANTUM MECHANICS; STRUCTURE ANALYSIS;

EID: 77950239141     PISSN: 00280836     EISSN: 14764687     Source Type: Journal    
DOI: 10.1038/nature08941     Document Type: Article

References (24)

1. Jain, J. K. Composite Fermions (Cambridge Univ. Press, 2007).
2. Dial, O. E., Ashoori, R. C., Pfeiffer, L. N. & West, K. W. High-resolution spectroscopy of two-dimensional electron systems. Nature 448, 176-179 (2007).
3. Chan, H. B., Glicofridis, P. I., Ashoori, R. C. & Melloch, M. R. Universal linear density of states for tunneling into the two-dimensional electron gas in a magnetic field. Phys. Rev. Lett. 79, 2867-2870 (1997).
4. Luhman, D. R., Tsui, D. C., Pfeiffer, L. N. & West, K. W. Electronic transport studies of a systematic series of GaAs/AlGaAs quantum wells. Appl. Phys. Lett. 91, 072104 (2007).
5. Ashoori, R. C., Lebens, J. A., Bigelow, N. P. & Silsbee, R. H. Equilibrium tunneling from the 2-dimensional electron-gas in GaAs \ evidence for a magnetic-field-induced energy-gap. Phys. Rev. Lett. 64, 681-684 (1990).
6. Eisenstein, J. P., Pfeiffer, L. N. & West, K. W. Coulomb barrier to tunneling between parallel two-dimensional electron systems. Phys. Rev. Lett. 69, 3804-3807 (1992).
7. Ashoori, R. C., Lebens, J. A., Bigelow, N. P. & Silsbee, R. H. Energy gaps of the two-dimensional electron gas explored with equilibrium tunneling spectroscopy. Phys. Rev. B 48, 4616-4628 (1993).
8. Yang, S.-R. E. & Macdonald, A. H. Coulomb gaps in a strong magnetic field. Phys. Rev. Lett. 70, 4110-4113 (1993).
9. Eisenstein, J. P., Pfeiffer, L. N. & West, K. W. Compressibility of the two-dimensional electron gas: measurements of the zero-field exchange energy and fractional quantum Hall gap. Phys. Rev. B 50, 1760-1778 (1994).
10. Khrapai, V. S. et al. Direct measurements of fractional quantum Hall effect gaps. Phys. Rev. Lett. 99, 086802 (2007).
11. Sondhi, S. L., Karlhede, A., Kivelson, S. A. & Rezayi, E. H. Skyrmions and the crossover from integer to fractional quantum Hall effect at small Zeeman energies. Phys. Rev. B 47, 16419-16426 (1993).
12. Barret, S. E., Dabbagh, G., Pfeiffer, L. N., West, K. W. & Tycko, R. Optically pumped NMR evidence for finite-size skyrmions in GaAs quantum wells near Landau level filling n51. Phys. Rev. Lett. 74, 5112-5115 (1995).
13. Schmeller, A., Eisenstein, J. P., Pfeiffer, L. N. & West, K. W. Evidence for skyrmions and single spin flips in the integer quantized Hall effect. Phys. Rev. Lett. 75, 4290-4293 (1995).
14. Gallais, Y., Yan, J., Pinczuk, A., Pfeiffer, L. N. & West, K. W. Soft spin wave near n51: evidence for a magnetic instability in skyrmion systems. Phys. Rev. Lett. 100, 086806 (2008).
15. Halperin, B. I., Lee, P. A. & Read, N. Theory of the half-filled Landau level. Phys. Rev. B 47, 7312-7343 (1993).
16. Hirjibehedin, C. F., Pinczuk, A., Dennis, B. S., Pfeiffer, L. N. & West, K. W. Crossover and coexistence of quasiparticle excitations in the fractional quantum Hall regime at n#1/3. Phys. Rev. Lett. 91, 186802 (2003).
17. Peterson, M. R. & Jain, J. K. Flavor altering excitations of composite fermions. Phys. Rev. Lett. 93, 046402 (2004).
18. Morf, R. & d'Ambrumenil, N. Stability and effective masses of composite fermions in the first and second Landau level. Phys. Rev. Lett. 74, 5116-5119 (1995).
19. Park, K., Meskini, N. & Jain, J. K. Activation gaps for the fractional quantum Hall effect: realistic treatment of transverse thickness. J. Phys. Condens. Matter 11, 7283-7299 (1999).
20. Leadley, D. R., van der Burgt, M., Nicholas, R. J., Foxon, C. T. & Harris, J. J. Pulsed-magnetic-field measurements of the composite-fermion effective mass. Phys. Rev. B 53, 2057-2063 (1996).
21. Jain, J. K. Composite-fermion approach for the fractional quantum Hall effect. Phys. Rev. Lett. 63, 199-202 (1989).
22. Fogler, M. M., Koulakov, A. A. & Shklovskii, B. I. Ground state of a two-dimensional electron liquid in a weak magnetic field. Phys. Rev. B 54, 1853-1871 (1996).
23. Ando, T. & Uemura, Y. Theory of oscillatory g factor in a MOS inversion layer under strong magnetic fields. J. Phys. Soc. Jpn 37, 1044-1052 (1974).
24. Pikus, F. G. & Efros, A. L. Coulomb gap in a two-dimensional electron gas with a close metallic electrode. Phys. Rev. B 51, 16871-16877 (1995).