Results 71 to 80 of about 48,281 (287)

Detecting the Six Polytypes of Five‐Layer Graphite

open access: yesAdvanced Materials, EarlyView.
The six possible periodic crystals—so‐called polytypes of Penta layer graphene are identified using Raman, second harmonic, and electric surface potential measurements. The measurements reveal the polytypes’ abundance, relative stability, and annihilation dynamics, crucial for future multiferroic SlideTronic applications.
Nirmal Roy   +5 more
wiley   +1 more source

Chiral topological insulator on Nambu 3-algebraic geometry

open access: yesNuclear Physics B, 2014
Chiral topological insulator (AIII-class) with Landau levels is constructed based on the Nambu 3-algebraic geometry. We clarify the geometric origin of the chiral symmetry of the AIII-class topological insulator in the context of non-commutative geometry
Kazuki Hasebe
doaj   +1 more source

Fractional quantum Hall effect without energy gap

open access: yes, 2006
In the fractional quantum Hall effect regime we measure diagonal ($\rho_{xx}$) and Hall ($\rho_{xy}$) magnetoresistivity tensor components of two-dimensional electron system (2DES) in gated GaAs/Al$_{x}$Ga$_{1-x}$As heterojunctions, together with ...
A. M. M. Pruisken   +19 more
core   +1 more source

Finite-temperature fractional quantum Hall effect [PDF]

open access: yesPhysical Review B, 1995
12 pages, Revtex (3 figures will be sent through airmail upon request)
Lizeng Zhang, Lizeng Zhang
openaire   +4 more sources

Observation of ν = 5/2 Fractional Quantum Hall Effect in Trilayer Graphene Proximitized by V‐Doped WSe2

open access: yesAdvanced Materials, EarlyView.
Even‐denominator 5/2 fractional state in trilayer graphene/V‐doped WSe2 heterostructure, mediated by proximitized magnetism, is demonstrated. An exceptionally high energy gap ∆5/2 (48 K) for the 5/2 state, significantly surpassing previous values in semiconductors and bilayer graphene (∆5/2 < 1 K) is reported.
Pramod Ghising   +7 more
wiley   +1 more source

Interaction potential between coplanar uniformly charged disk and ring

open access: yesResults in Physics, 2023
We consider a system made up of a uniformly charged disk and a uniformly charged ring that are coplanar with each other. The disk and ring have arbitrary radii and contain arbitrary amounts of net charge that is spread uniformly over area and length ...
Kevin Storr   +3 more
doaj   +1 more source

Quantum Oscillations of Electrons and of Composite Fermions in Two Dimensions: Beyond the Luttinger Expansion

open access: yes, 1997
Quantum oscillation phenomena, in conventional 2-dimensional electron systems and in the fractional quantum Hall effect, are usually treated in the Lifshitz-Kosevich formalism.
A. Stern   +29 more
core   +1 more source

Fractional quantum Hall states in two-dimensional electron systems with anisotropic interactions [PDF]

open access: yes, 2012
We study the anisotropic effect of the Coulomb interaction on a 1/3-filling fractional quantum Hall system by using an exact diagonalization method on small systems in torus geometry. For weak anisotropy the system remains to be an incompressible quantum
D. Yoshioka   +4 more
core   +2 more sources

Band structure of the fractional quantum Hall effect [PDF]

open access: yesPhysical Review Letters, 1992
The eigenstates of interacting electrons in the fractional quantum Hall phase typically form fairly well defined bands in the energy space. We show that the composite fermion theory gives insight into the origin of these bands and provides an accurate and complete microscopic description of the strongly correlated many-body states in the low-energy ...
J. K. Jain, Gautam Dev
openaire   +4 more sources

Refined Epitaxial Growth of YbRh2Si2 Thin Films

open access: yesAdvanced Materials Interfaces, EarlyView.
Epitaxial thin films of the heavy fermion compound YbRh2Si2 have opened new possibilities for investigating the strange metal state. This study enhances the crystallinity and surface smoothness of YbRh2Si2 thin films grown by molecular beam epitaxy.
Stefania Isceri   +20 more
wiley   +1 more source

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