Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Michael Zudov"'
Autor:
Loren Pfeiffer, Qianhui Shi, Michael Zudov, Ken W. West, X. Fu, Kirk Baldwin, John Watson, Michael J. Manfra, Geoffrey C. Gardner
Publikováno v:
Physical Review B. 104
Anomalous nematic states, recently discovered in ultraclean two-dimensional electron gas, emerge from quantum Hall stripe phases upon further cooling. These states are hallmarked by a local minimum (maximum) in the hard (easy) longitudinal resistance
Autor:
Qianhui Shi, Michael Zudov, Yi Huang, Geoff Gardner, X. Fu, Boris I Shklovskii, Michael J. Manfra
Publikováno v:
Physical Review Letters. 125
We report on transport signatures of hidden quantum Hall stripe (hQHS) phases in high (N>2) half-filled Landau levels of Al_{x}Ga_{1-x}As/Al_{0.24}Ga_{0.76}As quantum wells with varying Al mole fraction x
Quantum Hall stripe (QHS) phases, predicted by the Hartree-Fock theory, are manifested in GaAs-based two-dimensional electron gases as giant resistance anisotropies. Here, we predict a ``hidden'' QHS phase which exhibits \emph{isotropic} resistivity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7202c8c8f6fdf3c18cb1fd0b40acc0b4
http://arxiv.org/abs/2002.00154
http://arxiv.org/abs/2002.00154
Autor:
John Watson, M. Sammon, Michael Zudov, Yi Huang, Ken W. West, Michael J. Manfra, Boris I Shklovskii, Kirk Baldwin, Geoff Gardner, Loren Pfeiffer, X. Fu
Publikováno v:
Physical Review B. 100
Quantum Hall stripe phases near half-integer filling factors $\ensuremath{\nu}\ensuremath{\ge}9/2$ were predicted by Hartree-Fock (HF) theory and confirmed by discoveries of giant resistance anisotropies in high-mobility two-dimensional electron gase
We report on microwave-induced resistance oscillations (MIROs) in a tunable-density 30-nm-wide GaAs/AlGaAs quantum well. We find that the MIRO amplitude increases dramatically with carrier density. Our analysis shows that the anticipated increase in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f43454f5ab0465840b995385d876d294
http://arxiv.org/abs/1904.03140
http://arxiv.org/abs/1904.03140
Publikováno v:
Physical Review B. 99
A bubble phase containing several electrons per unit cell was predicted by Koulakov, Fogler, and Shklovskii in 1996 as a generalization of the Wigner crystal. While the experimental evidence of such phases with $M$=2 electrons per bubble has emerged
Autor:
Qianhui Shi, Kirk Baldwin, X. Fu, Michael Zudov, Loren Pfeiffer, Yoon Jang Chung, Ken W. West
Publikováno v:
Physical Review B. 98
We report on quantum Hall stripes (QHSs) formed in higher Landau levels of GaAs/AlGaAs quantum wells with high carrier density ($n_e > 4 \times 10^{11}$ cm$^{-2}$) which is expected to favor QHS orientation along unconventional $\left < 1\bar{1}0 \ri
Autor:
Michael J. Manfra, Kirk Baldwin, Geoff Gardner, X. Fu, Michael Zudov, Austin D. Riedl, Mikhail Borisov, Ken W. West, Loren Pfeiffer, John Watson
Publikováno v:
Physical Review B. 98
Low-temperature illumination of a two-dimensional electron gas in GaAs quantum wells is known to greatly improve the quality of high-field magnetotransport. The improvement is known to occur even when the carrier density and mobility remain unchanged
In modern GaAs/Al$_x$Ga$_{1-x}$As heterostructures with record high mobilities, a two-dimensional electron gas (2DEG) in a quantum well is provided by two remote donor $\delta$-layers placed on both sides of the well. Each $\delta$-layer is located w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e5710d498224604c36aba1bac947b32
Autor:
Yusuke Kozuka, Joseph Falson, Atsushi Tsukazaki, Masashi Kawasaki, Qianhui Shi, Michael Zudov, Jurgen H. Smet
We report on magnetotransport properties of a MgZnO/ZnO heterostructure subjected to weak direct currents. We find that in the regime of overlapping Landau levels, the differential resistivity acquires a quantum correction proportional to both the sq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7e365606c36ed9082040827377da909
https://resolver.caltech.edu/CaltechAUTHORS:20200402-144732644
https://resolver.caltech.edu/CaltechAUTHORS:20200402-144732644