Topological aspects of antiferromagnets
The long fascination that antiferromagnetic materials has exerted on the scientific community
over about a century has been entirely renewed recently with the discovery of several …
over about a century has been entirely renewed recently with the discovery of several …
Paired states of fermions in two dimensions with breaking of parity and time-reversal symmetries and the fractional quantum Hall effect
N Read, D Green - Physical Review B, 2000 - APS
We analyze pairing of fermions in two dimensions for fully gapped cases with broken parity
(P) and time reversal (T), especially cases in which the gap function is an orbital angular …
(P) and time reversal (T), especially cases in which the gap function is an orbital angular …
[BOOK][B] Field theories of condensed matter physics
E Fradkin - 2013 - books.google.com
Presenting the physics of the most challenging problems in condensed matter using the
conceptual framework of quantum field theory, this book is of great interest to physicists in …
conceptual framework of quantum field theory, this book is of great interest to physicists in …
Nature of the Spin-Liquid Ground State of the Heisenberg Model on the Kagome Lattice
We perform a density-matrix renormalization group (DMRG) study of the S= 1 2 Heisenberg
antiferromagnet on the kagome lattice to identify the conjectured spin liquid ground state …
antiferromagnet on the kagome lattice to identify the conjectured spin liquid ground state …
Quantum magnetism in two dimensions: From semi-classical Néel order to magnetic disorder
It is known from the Mermin-Wagner theorem that magnetic long-range order can exist in two
dimensions only at zero temperature, but even then it can still be destroyed eg by quantum …
dimensions only at zero temperature, but even then it can still be destroyed eg by quantum …
Spin anisotropy and quantum Hall effect in the kagomé lattice: Chiral spin state based on a ferromagnet
K Ohgushi, S Murakami, N Nagaosa - Physical Review B, 2000 - APS
A ferromagnet with spin anisotropies on the two-dimensional (2D) kagomé lattice is
theoretically studied. This is a typical example of the flat-band ferromagnet. The Berry phase …
theoretically studied. This is a typical example of the flat-band ferromagnet. The Berry phase …
Spontaneous interlayer coherence in double-layer quantum Hall systems: Charged vortices and Kosterlitz-Thouless phase transitions
At strong magnetic fields, double-layer two-dimensional electron-gas systems can form an
unusual broken-symmetry state with spontaneous interlayer phase coherence. In this paper …
unusual broken-symmetry state with spontaneous interlayer phase coherence. In this paper …
Long-range Néel order in the triangular Heisenberg model
We have studied the Heisenberg model on the triangular lattice using quantum Monte Carlo
techniques (up to 144 sites) and exact diagonalization (up to 36 sites). By studying the spin …
techniques (up to 144 sites) and exact diagonalization (up to 36 sites). By studying the spin …
Exact spectra, spin susceptibilities, and order parameter of the quantum Heisenberg antiferromagnet on the triangular lattice
Exact spectra of periodic samples are computed up to N= 36. Evidence of an extensive set of
low-lying levels, lower than the softest magnons, is exhibited. These low-lying quantum …
low-lying levels, lower than the softest magnons, is exhibited. These low-lying quantum …
Gapless spin-liquid phase in the kagome spin- Heisenberg antiferromagnet
We study the energy and the static spin structure factor of the ground state of the spin-1/2
quantum Heisenberg antiferromagnetic model on the kagome lattice. By the iterative …
quantum Heisenberg antiferromagnetic model on the kagome lattice. By the iterative …