Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"composite fermions"”.
-
Interaction of composite fermions with a gauge field in the fractional quantum Hall regime
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1995.
-
Coulomb drag in quantum Hall systems near v = 1/2
We use the composite fermion approach for theoretical studies of the Coulomb drag between two parallel layers of two-dimensional electron gases in the quantum Hall regime near Landau level filling fraction v = 1/2. Within the composite fermion approach, we use Boltzmann transport theory to …
-
Exact Diagonalization Studies of Strongly Correlated Systems
… we study the FQHE at fillings $nu = 5/2$ for fermions and $nu = 1/2$ for bosons. For the $nu = 5/2$ system we investigate a two-body model that effectively captures the three-body model that generates the Moore-Read Pfaffian state. The Moore-Read Pfaffian wave function pairs composite fermions …
-
Strongly coupled fermions on the lattice
… chiral states by coupling them to additional composite fermions. These composite fermions would arise as bound states via an auxiliary Yukawa interaction. Hence in the continuum limit mirror modes will be forced to decouple from the spectrum without breaking chiral symmetry. This proposal led …
-
New perspectives on fractional quantum Hall physics
… states. We begin in Chapter 2 by formulating a composite fermion theory for FCI states in a kagome lattice model, making use of a recently developed lattice Chern-Simons theory to effect the flux attachment. We identify sequences of Abelian states, including states for which the Hall conductance …
-
Hofstadter Physics and Composite Fermionic Phase in Moiré Systems
… Hofstadter physics and the emergence of composite fermion phases in these materials. In this work, we first develop a continuum model to describe the low-energy electronic structure of twisted TMD bilayers, emphasizing the role of the Moiré superlattice in modifying the band structure and …
-
Transport studies of reentrant integer quantum Hall states forming in the two-dimensional electron gas
… concepts such as fractional statistics and composite fermions. The subsequent discovery of the enigmatic even-denominator ν=5/2 fractional quantum Hall state has led to more interesting concepts such as non-Abelian statistics and pairing of composite fermions which can be intimately …
-
Spectroscopy of Two Dimensional Electron Systems Comprising Exotic Quasiparticles
… for the first time, high energy excitations of composite fermions in the quantum fluid at v = 1/3. The high energies discovered represent excitations across multiple composite fermion energy levels, demonstrating the topological robustness of the fractional quantum Hall state at v = 1/3. This …
-
Duality and strongly correlated systems in two dimensions
… 3 we turn our attention to the metallic, “composite Fermi liquid” states occuring in quantum Hall systems at filling fraction ν = 1/2n. Famously, the state at ν = 1/2 is known to display particle-hole symmetry, which has recently led to the proposal of a manifestly particle-hole symmetric …
-
Solitons and dualities in 2+1 dimensions
… between the vortices of these theories and the (composite) fermions that arise in descriptions of strongly correlated electron systems and, in particular, of (nonAbelian, fractional) quantum Hall fluids. In simple cases, where the degeneracies of the fermion fluids are well understood, the …