171 citations · 1.1k across the 29 of their papers we have counts for
29 papers
Field-tunable Berezinskii-Kosterlitz-Thouless correlations in a Heisenberg magnet
D. Opherden, M. S. J. Tepaske, F. Bärtl +10
We report the manifestation of field-induced Berezinskii-Kosterlitz-Thouless (BKT) correlations in the weakly coupled spin-1/2 Heisenberg layers of the molecular-based bulk materia…
Freezing of molecular rotation in a paramagnetic crystal studied by P NMR
D. Opherden, F. Bärtl, Sh. Yamamoto +9
We present a detailed P nuclear magnetic resonance (NMR) study of the molecular rotation in the compound [Cu(pz)(2-HOpy)](PF), where pz = CHN…
Room-temperature structural phase transition in the quasi-2D spin-1/2 Heisenberg antiferromagnet Cu(pz)(ClO)
N. Barbero, M. Medarde, T. Shang +5
Cu(pz)(ClO) (with pz denoting pyrazine CHN) is a two-dimensional spin-1/2 square-lattice antiferromagnet with = 4.24 K. Due to a persisting…
Quantum-critical spin dynamics in a Tomonaga-Luttinger liquid studied with muon-spin relaxation
J. S. Möller, T. Lancaster, S. J. Blundell +7
We demonstrate that quantum-critical spin dynamics can be probed in high magnetic fields using muon-spin relaxation (SR). Our model system is the strong-leg spin ladder bis(…
Pressure and magnetic field effects on a quasi-2D spin-1/2 Heisenberg antiferromagnet
N. Barbero, T. Shiroka, C. P. Landee +3
Cu(pz)2(ClO4)2 (with pz denoting pyrazine, C4H4N2) is among the best realizations of a two-dimensional spin-1/2 square-lattice antiferromagnet. Below T_N = 4.21 K, its weak interla…
Raman study of spin excitations in the tunable quantum spin ladder Cu(Qnx)(ClBr)
G. Simutis, S. Gvasaliya, F. Xiao +2
Raman spectroscopy is used to study magnetic excitations in the quasi one dimensional quantum spin systems Cu(Qnx)(ClBr). The low energy spectrum is found t…