Resistivity peak values at the transition between fractional quantum hall states
نویسندگان
چکیده
منابع مشابه
Spin-dependent resistivity at transitions between integer quantum hall states.
The longitudinal resistivity at transitions between integer quantum Hall states in two-dimensional electrons confined to AlAs quantum wells is found to depend on the spin orientation of the partially filled Landau level in which the Fermi energy resides. The resistivity can be enhanced by an order of magnitude as the spin orientation of this energy level is aligned with the majority spin. We di...
متن کاملFractional quantum Hall states at zero magnetic field.
We present a simple prescription to flatten isolated Bloch bands with a nonzero Chern number. We first show that approximate flattening of bands with a nonzero Chern number is possible by tuning ratios of nearest-neighbor and next-nearest-neighbor hoppings in the Haldane model and, similarly, in the chiral-π-flux square lattice model. Then we show that perfect flattening can be attained with fu...
متن کاملFractional quantum Hall states of Rydberg polaritons
Mohammad F. Maghrebi,1,2 Norman Y. Yao,3 Mohammad Hafezi,1,4 Thomas Pohl,5 Ofer Firstenberg,6 and Alexey V. Gorshkov1,2 1Joint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA 2Joint Center for Quantum Information and Computer Sceince, NIST/University of Maryland, College Park, Maryland 20742, USA 3Department of Physics, University of California, Berkeley, Calif...
متن کاملHigh-temperature fractional quantum Hall states.
We show that a suitable combination of geometric frustration, ferromagnetism, and spin-orbit interactions can give rise to nearly flatbands with a large band gap and nonzero Chern number. Partial filling of the flatband can give rise to fractional quantum Hall states at high temperatures (maybe even room temperature). While the identification of material candidates with suitable parameters rema...
متن کاملEdge reconstruction in fractional quantum Hall states
The nature of edge reconstruction in the quantumHall e ect (QHE) and the issue of where the current flows have been debated for years.Moreover, the recent observation of proliferation of ‘upstream’ neutral modes in the fractional QHE has raised doubts about the present models of edge channels. Here, we present a new picture of the edge reconstruction in two of the holeconjugate states. For exam...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: JETP Letters
سال: 2008
ISSN: 0021-3640,1090-6487
DOI: 10.1134/s0021364008170086