119 citations · 228 across the 12 of their papers we have counts for
12 papers
The Effects of Inter-Valley Coupling of Dirac Fermions near Four Dimensions
S. Thiagarajan, F. Krüger
We analyze the criticality of an Ising Gross-Neveu-Yukawa (GNY) theory of Dirac fermion valleys with intra- and inter-valley interactions, using a renormalization-group analy…
Nature of Topological Phase Transition of Kitaev Quantum Spin Liquids
Huanzhi Hu, Frank Krüger
We investigate the nature of the topological quantum phase transition between the gapless and gapped Kitaev quantum spin liquid phases away from the exactly solvable point. The tra…
Majorana Fermion Mean-Field Theories of Kitaev Quantum Spin Liquids
Shahnam Ghanbari Saheli, Jennifer Lin, Huanzhi Hu +1
We determine the phase diagrams of anisotropic Kitaev-Heisenberg models on the honeycomb lattice using parton mean-field theories based on different Majorana fermion representation…
Strain control of a bandwidth-driven spin reorientation in CaRuO
C. D. Dashwood, A. H. Walker, M. P. Kwasigroch +14
The layered-ruthenate family of materials possess an intricate interplay of structural, electronic and magnetic degrees of freedom that yields a plethora of delicately balanced gro…
Stability of the Néel quantum critical point in the presence of Dirac fermions
Huanzhi Hu, Jennifer Lin, Mikolaj D. Uryszek +1
We investigate the stability of the Néel quantum critical point of two-dimensional quantum antiferromagnets, described by a non-linear model (NLM), in the presence of a Kond…
Interplay of interactions and disorder at the charge-density wave transition of two-dimensional Dirac semimetals
Mikolaj D. Uryszek, Frank Krüger
We consider the effects of weak quenched fermionic disorder on the quantum-phase transition between the Dirac semimetal and charge density wave (CDW) insulator in two spatial dimen…
Field Induced Modulated State in the Ferromagnet PrPtAl
Christopher D. O'Neill, Gino Abdul-Jabbar, Didier Wermeille +3
The theory of quantum order-by-disorder (QOBD) explains the formation of modulated magnetic states at the boundary between ferromagnetism and paramagnetism in zero field. PrPtAl ha…
Topological Triplon Modes and Bound States in a Shastry-Sutherland Magnet
P. A. McClarty, F. Krüger, T. Guidi +5
The twin discoveries of the quantum Hall effect, in the 1980's, and of topological band insulators, in the 2000's, were landmarks in physics that enriched our view of the electroni…
Incommensurate spin-density-wave antiferromagnetism in CeRuAlB
A. Bhattacharyya, D. D. Khalyavin, F. Krüger +4
The newly discovered Ising-type ferromagnet CeRuAlB exhibits an additional phase transition at = 14.2 K before entering the ferromagnetic ground state at $T_…
Replica symmetry breaking in the Bose glass
S. J. Thomson, F. Krüger
We investigate the nature of the Bose glass phase of the disordered Bose-Hubbard model in and demonstrate the existence of a glass-like replica symmetry breaking (RSB) order…
Quantum order-by-disorder near criticality and the secret of partial order in MnSi
Frank Krüger, Una Karahasanovic, Andrew G. Green
The vicinity of quantum phase transitions has proven fertile ground in the search for new quantum phases. We propose a physically motivated and unifying description of phase recons…
Non-universal ordering of spin and charge in stripe phases
Frank Krüger, Stefan Scheidl
We study the interplay of topological excitations in stripe phases: charge dislocations, charge loops, and spin vortices. In two dimensions these defects interact logarithmically o…