The electronic properties of graphene, a two-dimensional crystal of carbon atoms, are
exceptionally novel. For instance, the low-energy quasiparticles in graphene behave as …

Two-dimensional electron systems in a high magnetic field behave very strangely. They
exhibit rational fractional quantum numbers and contain exactly fractionally charged …

The ground state and transport properties of the Lieb lattice flat band in the presence of an
attractive Hubbard interaction are considered. It is shown that the superfluid weight can be …

The fractional quantum Hall effect is a very counterintuitive physical phenomenon. It implies
that many electrons, acting in concert, can create new particles having a charge smaller than …

The quantum Hall effect (QHE) provides an invariant reference for resistance linked to
natural constants. It is used worldwide to maintain and compare the unit of resistance. The …

Eine Vorlesung über Festkörperphysik gehört heute an allen Universitäten und Technischen
Hochschulen zu den Pflichtveranstaltungen für Physikstudenten nach Abschluss des …

We report ultralow temperature experiments on the obscure fractional quantum Hall effect at
Landau level filling factor ν= 5/2 in a very high-mobility specimen of μ= 1.7× 10 7 cm 2/V s …

At a very low-temperature of 9 mK, electrons in the second Landau level of an extremely
high-mobility two-dimensional electron system exhibit a very complex electronic behavior …

The fractional quantum Hall effect, being one of the most studied phenomena in condensed
matter physics during the past 30 years, has generated many ground-breaking new ideas …

We discuss a way of creating, manipulating, and detecting anyons in rotating Bose-Einstein
condensates consisting of a small number of atoms. By achieving a quasidegeneracy in the …