Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Meng K. Ma"'
Autor:
Jing Xu, Meng K. Ma, Maksim Sultanov, Zhi-Li Xiao, Yong-Lei Wang, Dafei Jin, Yang-Yang Lyu, Wei Zhang, Loren N. Pfeiffer, Ken W. West, Kirk W. Baldwin, Mansour Shayegan, Wai-Kwong Kwok
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
The attribution of negative longitudinal magnetoresistance (NLMR) in Weyl metals to a chiral anomaly is already challenged. Here, NLMR resembling that of Weyl metals is demonstrated in a non-Weyl-metal GaAs quantum well originating from different typ
Externí odkaz:
https://doaj.org/article/47178501dfb74e49b1f2d7f48ab61d73
Autor:
K. A. Villegas Rosales, S. K. Singh, Meng K. Ma, Md. Shafayat Hossain, Y. J. Chung, L. N. Pfeiffer, K. W. West, K. W. Baldwin, M. Shayegan
Publikováno v:
Physical Review Research, Vol 3, Iss 1, p 013181 (2021)
What is the fate of the ground state of a two-dimensional electron system at very low Landau level filling factors (ν) where interaction reigns supreme? An ordered array of electrons, the so-called Wigner crystal, has long been believed to be the an
Externí odkaz:
https://doaj.org/article/3686af131676448387b80fdabb36a44d
Autor:
Md. Shafayat Hossain, Meng K. Ma, Y. J. Chung, S. K. Singh, A. Gupta, K. W. West, K. W. Baldwin, L. N. Pfeiffer, R. Winkler, M. Shayegan
Publikováno v:
Physical Review Letters. 130
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a028edee58bd3525ae672f041dc8437e
https://doi.org/10.1103/physrevlett.130.126301
https://doi.org/10.1103/physrevlett.130.126301
Autor:
Md. Shafayat Hossain, Meng K. Ma, Y. J. Chung, S. K. Singh, A. Gupta, K. W. West, K. W. Baldwin, L. N. Pfeiffer, R. Winkler, M. Shayegan
Publikováno v:
Physical Review B. 106
Electrons' multiple quantum degrees of freedom can lead to rich physics, including a competition between various exotic ground states, as well as novel applications such as spintronics and valleytronics. Here we report magneto-transport experiments d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1cf44c3f787be6a910671a5e47d1080a
https://doi.org/10.1103/physrevb.106.l201303
https://doi.org/10.1103/physrevb.106.l201303
Autor:
Mansour Shayegan, Md. Shafayat Hossain, Kirk Baldwin, Meng K. Ma, Ken W. West, K. A. Villegas Rosales, Loren Pfeiffer, Yoon Jang Chung
Publikováno v:
Proc Natl Acad Sci U S A
What are the ground states of an interacting, low-density electron system? In the absence of disorder, it has long been expected that as the electron density is lowered, the exchange energy gained by aligning the electron spins should exceed the enha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cf6c8b8901dcf5b30b2f10f7c3bdd3d
https://doi.org/10.1073/pnas.2018248117
https://doi.org/10.1073/pnas.2018248117
Autor:
Songyang Pu, Loren Pfeiffer, Kirk Baldwin, Jainendra K. Jain, Yoon Jang Chung, K. A. Villegas Rosales, Ken W. West, Shafayat Hossain, Mansour Shayegan, Tongzhou Zhao, M. A. Mueed, Meng K. Ma
Publikováno v:
Nature Physics. 17:48-52
In 1929, Felix Bloch suggested that the paramagnetic Fermi sea of electrons should make a spontaneous transition to a fully magnetized state at very low densities, because the exchange energy gained by aligning the spins exceeds the enhancement in th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4357dd324bffe1a97b4577a47bafaf4c
https://doi.org/10.1038/s41567-020-1000-z
https://doi.org/10.1038/s41567-020-1000-z
Autor:
Meng K. Ma, Chengyu Wang, Y. J. Chung, L. N. Pfeiffer, K. W. West, K. W. Baldwin, R. Winkler, M. Shayegan
Publikováno v:
Physical review letters. 129(19)
In a low-disorder two-dimensional electron system, when two Landau levels of opposite spin or pseudospin cross at the Fermi level, the dominance of the exchange energy can lead to a ferromagnetic, quantum Hall ground state whose gap is determined by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f9b1a6a410c04711c951b79c08102c5
https://pubmed.ncbi.nlm.nih.gov/36399735
https://pubmed.ncbi.nlm.nih.gov/36399735
Autor:
K. A. Villegas-Rosales, Yoon Jang Chung, Meng K. Ma, Mansour Shayegan, Loren Pfeiffer, Kirk Baldwin, Shafayat Hossain, Ken W. West
Publikováno v:
Physical review letters. 127(11)
Memory or transistor devices based on an electron's spin rather than its charge degree of freedom offer certain distinct advantages and comprise a cornerstone of spintronics. Recent years have witnessed the emergence of a new field, valleytronics, wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62ed7c19524eb432bc7ba68c699030e4
https://pubmed.ncbi.nlm.nih.gov/34558923
https://pubmed.ncbi.nlm.nih.gov/34558923
Autor:
Mansour Shayegan, Loren Pfeiffer, Ken W. West, Meng K. Ma, Md. Shafayat Hossain, M. A. Mueed, Kirk Baldwin, Yoon Jang Chung, K. A. Villegas Rosales
A fundamental concept in physics is the Fermi surface, the constant-energy surface in momentum space encompassing all the occupied quantum states at absolute zero temperature. In 1960, Luttinger postulated that the area enclosed by the Fermi surface
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ed8107e5f7ec99bb4fa60b97ad140fb
http://arxiv.org/abs/2007.10208
http://arxiv.org/abs/2007.10208
Autor:
Kirk Baldwin, Roland Winkler, Meng K. Ma, Yoon Jang Chung, K. A. Villegas Rosales, H. Deng, Mansour Shayegan, Ken W. West, Loren Pfeiffer
Publikováno v:
Physical review letters. 125(3)
A sufficiently large perpendicular magnetic field quenches the kinetic (Fermi) energy of an interacting two-dimensional (2D) system of fermions, making them susceptible to the formation of a Wigner solid (WS) phase in which the charged carriers organ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff5089d98d222faa0f23309e347534ba
https://pubmed.ncbi.nlm.nih.gov/32745416
https://pubmed.ncbi.nlm.nih.gov/32745416