Frustrated magnets realize exotic forms of quantum matter beyond conventional order. Due to a lack of controlled and unbiased methods to study frustration in three dimensions, many questions remain unanswered. While most established numerical techniques have limited applicability, approaches based on cluster expansions are promising alternatives. By design, they do not suffer from dimensionality or frustration and generate reliable insights into the thermodynamic limit without any restriction in the parameter space. This thesis makes significant methodological progress in controlled numerical approaches tailored to study frustration in three dimensions. It covers (i) an automatic detection algorithm for symmetries in generic clusters, (ii) ...
In this thesis, the magnetic properties of geometrically frustrated systems have been studied, using...
We employ a recently developed variant of the functional renormalization group method for spin syste...
Geometric spin frustration in low-dimensional materials, such as the two-dimensional kagome or trian...
We use a combination of three computational methods to investigate the notoriously difficult frustra...
We propose a simple family of valence-bond crystals as potential ground states of the $S=1/2$ and $S...
We address the ground-state properties of the long-standing and much-studied three-dimensional quant...
We investigate the ground-state properties of the spin-1/2 pyrochlore Heisenberg antiferromagnet usi...
We investigate the ground-state properties of the nearest-neighbor S=1 pyrochlore Heisenberg antifer...
We use the rotation-invariant Green's function method (RGM) and the high-temperature expansion to st...
In this thesis three new, three-dimensional (3D) magnetic cubic systems, with spin lattices that pro...
The 1/4-filled organic compound, δ-(EDT-TTF-CONMe2)2AsF6 is a frustrated two-dimensional triangular ...
Dimensionality is a critical factor in determining the properties of solids and is an apparent built...
The present thesis provides extensive investigations on the effect of geometrical spin frustration i...
The spin-1/2 Heisenberg model on the pyrochlore lattice is an iconic frustrated three-dimensional sp...
Employing numerical linked-cluster expansions (NLCEs) along with exact diagonalizations of finite cl...
In this thesis, the magnetic properties of geometrically frustrated systems have been studied, using...
We employ a recently developed variant of the functional renormalization group method for spin syste...
Geometric spin frustration in low-dimensional materials, such as the two-dimensional kagome or trian...
We use a combination of three computational methods to investigate the notoriously difficult frustra...
We propose a simple family of valence-bond crystals as potential ground states of the $S=1/2$ and $S...
We address the ground-state properties of the long-standing and much-studied three-dimensional quant...
We investigate the ground-state properties of the spin-1/2 pyrochlore Heisenberg antiferromagnet usi...
We investigate the ground-state properties of the nearest-neighbor S=1 pyrochlore Heisenberg antifer...
We use the rotation-invariant Green's function method (RGM) and the high-temperature expansion to st...
In this thesis three new, three-dimensional (3D) magnetic cubic systems, with spin lattices that pro...
The 1/4-filled organic compound, δ-(EDT-TTF-CONMe2)2AsF6 is a frustrated two-dimensional triangular ...
Dimensionality is a critical factor in determining the properties of solids and is an apparent built...
The present thesis provides extensive investigations on the effect of geometrical spin frustration i...
The spin-1/2 Heisenberg model on the pyrochlore lattice is an iconic frustrated three-dimensional sp...
Employing numerical linked-cluster expansions (NLCEs) along with exact diagonalizations of finite cl...
In this thesis, the magnetic properties of geometrically frustrated systems have been studied, using...
We employ a recently developed variant of the functional renormalization group method for spin syste...
Geometric spin frustration in low-dimensional materials, such as the two-dimensional kagome or trian...