Composite-fermion pairing at half-filled and quarter-filled lowest Landau level

A Sharma, AC Balram, JK Jain - Physical Review B, 2024 - APS
The Halperin-Lee-Read Fermi sea of composite fermions at half-filled lowest Landau level is
the realization of a fascinating metallic phase that is a strongly correlated “non-Fermi liquid” …

Fractional quantum Hall effect of partons and the nature of the 8/17 state in the zeroth Landau level of bilayer graphene

AC Balram, N Regnault - Physical Review B, 2024 - APS
We consider the fractional quantum Hall effect (FQHE) at the filling factor 8/17, where
signatures of incompressibility have been observed in the zeroth Landau level of bilayer …

Very-high-energy collective states of partons in fractional quantum hall liquids

AC Balram, Z Liu, A Gromov, Z Papić - Physical Review X, 2022 - APS
The low-energy physics of fractional quantum Hall (FQH) states—a paradigm of strongly
correlated topological phases of matter—to a large extent is captured by weakly interacting …

Fractional quantum Hall effect with unconventional pairing in monolayer graphene

A Sharma, S Pu, AC Balram, JK Jain - Physical review letters, 2023 - APS
Motivated by the observation of even denominator fractional quantum Hall effect in the n= 3
Landau level of monolayer graphene [Kim et al., Nat. Phys. 15, 154 (2019) NPAHAX 1745 …

A non-Abelian parton state for the fractional quantum Hall effect

A Coimbatore Balram - SciPost Physics, 2021 - scipost.org
Fascinating structures have arisen from the study of the fractional quantum Hall effect
(FQHE) at the even denominator fraction of $5/2$. We consider the FQHE at another even …

Fractional quantum Hall coexistence phases in higher Landau levels of graphene

J An, AC Balram, U Khanna, G Murthy - Physical Review B, 2025 - APS
Monolayer graphene under a strong magnetic field near charge neutrality manifests the
integer and fractional quantum Hall effects. Since only some of the four spin/valley flavors …

Nature of the anomalous fractional quantum Hall effect in graphene

RK Dora, AC Balram - Physical Review B, 2022 - APS
Extensive fractional quantum Hall effect (FQHE) has been observed in graphene-based
materials. Some of the observed fractions are anomalous in that FQHE has not been …

Signatures of Supersymmetry in the Fractional Quantum Hall Effect

S Pu, AC Balram, M Fremling, A Gromov, Z Papić - Physical Review Letters, 2023 - APS
The Moore-Read state, one of the leading candidates for describing the fractional quantum
Hall effect at filling factor ν= 5/2, is a paradigmatic p-wave superconductor with non-Abelian …

Microscopic Model for Fractional Quantum Hall Nematics

S Pu, AC Balram, J Taylor, E Fradkin, Z Papić - Physical Review Letters, 2024 - APS
Geometric fluctuations of the density mode in a fractional quantum Hall (FQH) state can give
rise to a nematic FQH phase, a topological state with a spontaneously broken rotational …

Numerical demonstration of Abelian fractional statistics of composite fermion excitations in the spherical geometry

K Bose, AC Balram - Physical Review B, 2024 - APS
Fractional quantum Hall (FQH) fluids host quasiparticle excitations that carry a fraction of the
electronic charge. Moreover, in contrast to bosons and fermions that carry exchange …