68 citations · 373 across the 12 of their papers we have counts for
12 papers · 1 filter
Nontrivial three-sublattice magnetization in the easy-axis spin-1/2 XXZ antiferromagnet on the triangular lattice
Masahiro Kadosawa, Masaaki Nakamura, Yukinori Ohta +1
We investigate the ground-state magnetic structure of the spin- XXZ antiferromagnet on the triangular lattice in the easy-axis regime using the density-matrix renormalization…
Emergent Random Spin Singlets in Disordered Spin-1/2 perovskite BaCuTaO
Sagar Mahapatra, Francesco De Angelis, Dibyata Rout +8
We investigate the disordered perovskite BaCuTaO, where Cu (spin-1/2) and Ta randomly occupy a pseudo-cubic lattice. Synchrotron X-ray diffraction and X-ray abs…
Comment on `Oxygen vacancy-induced magnetic moment in edge-sharing CuO chains of LiCuO'
R. O. Kuzian, R. Klingeler, W. E. A. Lorenz +23
In a recent work devoted to the magnetism of LiCuO, Shu et al. [New J. Phys. 19 (2017) 023026] have proposed a "simplified" unfrustrated microscopic model that differs…
Evidence for a magnetic field-induced unconventional nematic state in the frustrated and anisotropic spin-chain cuprate LiCuSbO
H. -J. Grafe, S. Nishimoto, M. Iakovleva +12
Modern theories of quantum magnetism predict exotic multipolar states in weakly interacting strongly frustrated spin-1/2 Heisenberg chains with ferromagnetic nearest neighbor (NN)…
Complex field-induced states in Linarite PbCuSO(OH) with a variety of high-order exotic SDW states
B. Willenberg, M. Schäpers, A. U. B. Wolter +8
Low-temperature neutron diffraction and NMR studies of field-induced phases in linarite are presented for magnetic fields axis. A two-step spin-flop transition is o…
Delta chain with ferromagnetic and antiferromagnetic interactions at the critical point
V. Ya. Krivnov, D. V. Dmitriev, S. Nishimoto +2
We investigate the spin-1/2 Heisenberg model on the delta chain (sawtooth chain) with ferromagnetic nearest-neighbor and antiferromagnetic next-neighbor interactions. For a special…
Ca2Y2Cu5O10: the first frustrated quasi-1D ferromagnet close to criticality
R. O. Kuzian, S. Nishimoto, S. -L. Drechsler +9
Ca2Y2Cu5O10 is build up from edge-shared CuO4 plaquettes forming spin chains. From inelastic neutron scattering data we extract an in-chain nearest neighbor exchange J1 approximate…
Magnetic properties and revisited exchange integrals of the frustrated chain cuprate PbCuSO(OH) - linarite
A. U. B. Wolter, F. Lipps, M. Schäpers +12
We present a detailed study in the paramagnetic regime of the frustrated = 1/2 spin-compound linarite, PbCuSO(OH), with competing ferromagnetic nearest-neighbor and ant…
Bond disorder and breakdown of ballistic heat transport in the spin-1/2 antiferromagnetic Heisenberg chain as seen in Ca-doped SrCuO2
N. Hlubek, P. Ribeiro, R. Saint-Martin +9
We study the impact of a weak bond disorder on the spinon heat transport in the S=1/2 antiferromagnetic (AFM) Heisenberg chain material Sr_{1-x}Ca_xCuO_2. We observe a drastic supp…
The J1-J2 Heisenberg model at and close to its z=4 quantum critical point
J. Sirker, V. Y. Krivnov, D. V. Dmitriev +5
We study the frustrated J1-J2 Heisenberg model with ferromagnetic nearest neighbor coupling J1<0 and antiferromagnetic next-nearest neighbor coupling J2>0 at and close to the z=4 q…
Comment on "Two-spinon and four-spinon continuum in a frustrated ferromagnetic spin-1/2 chain" by M. Enderle et al
S. -L. Drechsler, S. Nishimoto, R. Kuzian +6
We show that LiVCuO4 should be described by strongly ferromagnetically coupled Heisenberg antiferromagnetic chains (HAC) in sharp contrast with the effective exchange integrals Ji…
Saturation field of frustrated chain cuprates: broad regions of predominant interchain coupling
S. Nishimoto, S. -L. Drechsler, R. O. Kuzian +6
An efficient and precise thermodynamic method to extract the interchain coupling (IC) of spatially anisotropic 2D or 3D spin-1/2 systems from their empirical saturation field H_s (…