Zobrazeno 1 - 10
of 1 528
pro vyhledávání: '"Shayegan M"'
Autor:
Singh, Siddharth Kumar, Gupta, A., Madathil, P. T., Wang, C., Baldwin, K. W., Pfeiffer, L. N., Shayegan, M.
Publikováno v:
Phys. Rev. B 110, 165143 (2024)
Termination of the fractional quantum Hall states (FQHSs) and the emergence of Wigner crystal phases at very small Landau level filling factors ($\nu$) have been of continued interest for decades. Recently, in ultra-high-quality, dilute GaAs 2D elect
Externí odkaz:
http://arxiv.org/abs/2410.22541
Autor:
Freeman, Matthew L., Madathil, P. T., Pfeiffer, L. N., Baldwin, K. W., Chung, Y. J., Winkler, R., Shayegan, M., Engel, L. W.
At low Landau level filling factors ($\nu$), Wigner solid phases of two-dimensional electron systems in GaAs are pinned by disorder, and exhibit a pinning mode, whose frequency is a measure of the disorder that pins the Wigner solid. Despite numerous
Externí odkaz:
http://arxiv.org/abs/2404.07369
Autor:
Madathil, P. T., Wang, C., Singh, S. K., Gupta, A., Rosales, K. A. Villegas, Chung, Y. J., West, K. W., Baldwin, K. W., Pfeiffer, L. N., Engel, L. W., Shayegan, M.
Publikováno v:
Phys. Rev. Lett. 132, 096502 (2024)
Low-disorder two-dimensional electron systems in the presence of a strong, perpendicular magnetic field terminate at very small Landau level filling factors in a Wigner crystal (WC), where the electrons form an ordered array to minimize the Coulomb r
Externí odkaz:
http://arxiv.org/abs/2403.07662
Autor:
Madathil, P. T., Rosales, K. A. Villegas, Chung, Y. J., West, K. W., Baldwin, K. W., Pfeiffer, L. N., Engel, L. W., Shayegan, M.
Publikováno v:
Phys. Rev. Lett. 131, 236501 (2023)
In low-disorder, two-dimensional electron systems (2DESs), the fractional quantum Hall states at very small Landau level fillings ($\nu$) terminate in a Wigner solid (WS) phase, where electrons arrange themselves in a periodic array. The WS is typica
Externí odkaz:
http://arxiv.org/abs/2401.13533
Autor:
Gupta, Adbhut, Wang, C., Singh, S. K., Baldwin, K. W., Winkler, R., Shayegan, M., Pfeiffer, L. N.
Owing to their large effective mass, strong and tunable spin-orbit coupling, and complex band-structure, two-dimensional hole systems (2DHSs) in GaAs quantum wells provide rich platforms to probe exotic many-body physics, while also offering potentia
Externí odkaz:
http://arxiv.org/abs/2312.13491
Fractional Quantum Hall State at Filling Factor $\nu=1/4$ in Ultra-High-Quality GaAs 2D Hole Systems
Autor:
Wang, Chengyu, Gupta, A., Singh, S. K., Madathil, P. T., Chung, Y. J., Pfeiffer, L. N., Baldwin, K. W., Winkler, R., Shayegan, M.
Publikováno v:
Phys. Rev. Lett. 131, 266502 (2023)
Single-component fractional quantum Hall states (FQHSs) at even-denominator filling factors may host non-Abelian quasiparticles that are considered to be building blocks of topological quantum computers. Such states, however, are rarely observed in t
Externí odkaz:
http://arxiv.org/abs/2311.13689
Autor:
Singh, Siddharth Kumar, Wang, C., Tai, C. T., Calhoun, C. S., Gupta, A., Baldwin, K. W., Pfeiffer, L. N., Shayegan, M.
Publikováno v:
Nat. Phys. (2024); Link: https://www.nature.com/articles/s41567-024-02517-w
$\nu$=1/2 is among the most enigmatic many-body phases in two-dimensional electron systems as it appears in the ground-state rather than an excited Landau level. It is observed in wide quantum wells where the electrons have a bilayer charge distribut
Externí odkaz:
http://arxiv.org/abs/2309.00111
Autor:
Madathil, P. T., Rosales, K. A. Villegas, Tai, C. T., Chung, Y. J., Pfeiffer, L. N., West, K. W., Baldwin, K. W., Shayegan, M.
Publikováno v:
Phys. Rev. Lett. 130, 226503 (2023)
Disorder and electron-electron interaction play essential roles in the physics of electron systems in condensed matter. In two-dimensional, quantum Hall systems, extensive studies of disorder-induced localization have led to the emergence of a scalin
Externí odkaz:
http://arxiv.org/abs/2306.03704
Autor:
Wang, Chengyu, Gupta, A., Chung, Y. J., Pfeiffer, L. N., West, K. W., Baldwin, K. W., Winkler, R., Shayegan, M.
Publikováno v:
Phys. Rev. Lett. 131, 056302 (2023)
The even-denominator fractional quantum Hall states (FQHSs) in half-filled Landau levels are generally believed to host non-Abelian quasiparticles and be of potential use in topological quantum computing. Of particular interest is the competition and
Externí odkaz:
http://arxiv.org/abs/2303.16791
Autor:
Hossain, Md. Shafayat, Ma, M. K., Chung, Y. J., Singh, S. K., Gupta, A., West, K. W., Baldwin, K. W., Pfeiffer, L. N., Winkler, R., Shayegan, M.
Publikováno v:
Phys. Rev. Lett. 130, 126301 (2023); Editor's suggestion
Fractional quantum Hall states (FQHSs) at even-denominator Landau level filling factors ($\nu$) are of prime interest as they are predicted to host exotic, topological states of matter. We report here the observation of a FQHS at $\nu=1/2$ in a two-d
Externí odkaz:
http://arxiv.org/abs/2303.11268