Quantum Hall
Effective potentials in the integral quantum Hall effect
... integral quantum Hall effect, as modeled by the sim- plest system, Landau’s noninteracting electrons in a ...the quantum state with filling factor ⫽ 1 is precisely de- scribed by an equivalent ...
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Localization of spin waves in the quantum Hall ferromagnet
... this quantum Hall ferromagnet(QHF) are profoundly affected by the topological nature of the quantized Hall ...a quantum Hall state, there is a commensu- ration between the magnetic flux ...
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The quantum Hall effect : spin-charge locking
... quantized Hall effect was further studied at high magnetic fields where fractional quantization was ...the quantum Hall ...the Hall effect is quite clear particularly when combined with the ...
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The existence and stability of fractional quantum Hall states
... I examine the existence and stability o f spin-polarised fractional quantum Hall (F Q H ) states. I show that the generalisations o f th e Laughlin state to higher (n > 0) Landau levels are not always ...
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Application of Electrodynamic Theory on Quantum Hall Effect
... in quantum Hall effect (QHE) is of two types, one is longitudinal and the other is ...quantized Hall state becomes maximum at the total Landau level with vanishing longitudinal component and ...
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Geometric Construction of Quantum Hall Clustering Hamiltonians
... many-body parent Hamiltonians described in Sec. III. The main result of that section is the appropriately chosen integral measure, which allows us to generate all pseudo- potentials through a direct Gram-Schmidt ...
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Electron Monopole Duality in Quantum Hall Effect
... the Hall effect is re- markable in that it takes place in systems that are impre- cisely characterized on the microscopic ...their Hall conductances are quantized, the quantized values mutually agree with ...
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Non-universality of scaling exponents in quantum Hall transitions
... We have investigated experimentally the scaling behaviour of quantum Hall transitions in GaAs/AlGaAs heterostructures of a range of mobility, carrier concentration, and spacer layer width. All three ...
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Tunable fractional quantum Hall phases in bilayer graphene
... the quantum Hall measurement In all our devices, we keep a distance (typically ranging from ...of quantum Hall measurements of the longitudinal resistance R xx and the Hall conductivity ...
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Strong Electric Field in 2D Graphene: The Integer Quantum Hall Regime from a Different (Many Body) Perspective
... to Quantum Hall Insulators [4], violating the time reversal symmetry that controls the topol- ogy of the surface ...the Hall conductivity [5], and which is the central quantity in the present ...
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Imaging of condensed quantum states in the quantum hall effect regime
... effects that are driven by the tail of the moving tip potential, acting on the anti-dot, have been identified as the origin of this fine structure. The arc geometry of the oscillations in the SGM image consists of all ...
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Edge states and quantum Hall phases in graphene
... dispersionless modes similar to the ones that exist in monolayer graphene, there are also dis- persive subgap edge excitations that carry counterpropagating currents in two valleys at a given edge [25–27]. In the ...
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Skyrmions in the quantum Hall effect at finite Zeeman coupling
... At moderate Zeeman energies, the distortion of Skyrmions in the fractional quantum Hall effect is small and one may describe spin textures using the Belavin-Polyakov solutions. We show that there is a range ...
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Spin Flip Scattering at Quantum Hall Transition
... p scattering problem in quantum Hall regime, and used it to construct the network model that describes integer QH transition in presence of scattering by nuclear spins. With increase of the exchange ...
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Vortex states of a disordered quantum Hall bilayer
... Many theoretical works have suggested that these devia- tions from conventional superfluid behaviors are connected to the presence of vortices. In a quantum Hall system physi- cal and topological charges ...
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Homotopy Approach to Fractional Quantum Hall Effect
... integer quantum Hall effect (IQHE) in two dimensional electron system (2DEG) upon strong magnetic fields corresponding to complete fillings of succeeding Landau levels (LLs), the surpris- ing observation of ...
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Breakdown of counterflow superfluidity in a disordered quantum Hall bilayer
... We present a theory for the regime of coherent interlayer tunneling in a disordered quantum Hall bilayer at total filling factor one, allowing for the effect of static vortices. We find that the system ...
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Meron deconfinement in the quantum Hall bilayer at intermediate distances
... view of the relationship between Ref.2 and our work). In Ref. 2 a spiraling structure in the competing ground states was identified, and it was argued that the in- termediate phase possesses a pseudospin spiral order. ...
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Few-body, hyperspherical treatment of the quantum Hall effect
... The quantum Hall effect arises from the quantum behavior of two- dimensional, strongly-interacting electrons exposed to a strong, perpendicular magnetic field [1, ...collective quantum number in ...
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Evidence for the Josephson Effect in Quantum Hall Bilayers
... fractional quantum Hall effect results essentially from the importance of Coulomb interactions at high magnetic ...different, quantum Hall states. The bilayer quantum Hall state ...
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