SuperSeed #1: Ultra-high-mobility GaAs/AlAs: A platform for exotic phases of interacting fermions

Details about this seed will be forthcoming.

Principal Investigators: 

portrait of Loren Pfeiffer

Loren Pfeiffer (Electrical and Computer Engineering)

portrait of Mansour Shayegan

Mansour Shayegan (Electrical and Computer Engineering)

Seed start and end date: September 1, 2021 - August 31, 2022


  1. K. A. Villegas Rosales, P. T. Madathil, Y. J. Chung, L. N. Pfeiffer, K. W. West, K. W. Baldwin, and M. Shayegan, “Composite Fermion Mass: Experimental measurements in ultrahigh quality two-dimensional electron systems,” Phys. Rev. B 106 (Letters), L041301 (2022). DOI:
  2. Md. S. Hossain, M. K. Ma, K. A. Villegas-Rosales, Y. J. Chung, L. N. Pfeiffer, K. W. West, K. W. Baldwin, M. Shayegan, R. Winkler, “Anisotropic Two-dimensional, Disordered Wigner Solid,” Phys. Rev. Lett. 129, 036601 (2022). DOI:
  3. Chengyu Wang, A. Gupta, S. K. Singh, Y. J. Chung, L. N. Pfeiffer, K. W. West, K. W. Baldwin, R. Winkler, and M. Shayegan, “Even-denominator fractional quantum Hall state at filling factor ν = ¾,” Phys. Rev. Lett. 129, 156801 (2022). DOI: 10.1103/PhysRevLett.129.156801
  4. L.L. Zhao, W.L. Lin, Y.J. Chung, K.W. Baldwin, L.N. Pfeiffer, Y. Liu, “Finite Capacitive Response at the Quantum Hall Plateau,” Chinese Phys. Lett, 39, 9, 097301 (2022). DOI: 10.1088/0256-307X/39/9/097301
  5. C. Hnatovsky, M.A. Zudov, G.D. Austing, A. Bogan, S.J. Mihailov, M. Hilke K. W. West, L.N. Pfeiffer, S.A. Studenikin, “Inscription of lateral superlattices in semiconductors using structured light,” Journal. Of Appl. Phys132, 044301 (2022). DOI:
  6. Y. J. Chung, C. Wang, S. K. Singh, A. Gupta, K. W. Baldwin, K. W. West, M. Shayegan, L. N. Pfeiffer, and R. Winkler, “Record-quality GaAs two-dimensional hole systems,” Phys. Review Materials 6, 034005 (2022). DOI: 10.1103/PhysRevMaterials.6.034005
  7. Yoon Jang Chung, A. Gupta, K. W. Baldwin, K. W. West, M. Shayegan and L. N. Pfeiffer, “Understanding limits to mobility in ultra-high-mobility GaAs two-dimensional electron systems: The quest for 100 million cm2/Vs and beyond,” Phys. Rev, B 106, 075134 (2022). DOI:10.1103/PhysRevB.106.075134