Publications (37)
The active muon shield in the SHiP experiment
SHiP collaboration, A. Akmete, A. Alexandrov +229
Test of the Equivalence Principle Using a Rotating Torsion Balance
S. Schlamminger, K. -Y. Choi, T. A. Wagner +2
Existence of orbital polarons in ferromagnetic insulating La$_{1-x}$Sr$_x$MnO$_{3}$ (0.11$<x<$0.14) evidenced by giant phonon softening
K. -Y. Choi, P. Lemmens, G. Güntherodt +6
Self-energy effects and electron-phonon coupling in Fe-As superconductors
K. -Y. Choi, P. Lemmens, I. Eremin +5
Coupling of spin and lattice modes in the S=1/2 two-dimensional antiferromagnet K$_{2}$V$_{3}$O$_{8}$ with magneto-dielectric couplings
K. -Y. Choi, P. Lemmens, V. P. Gnezdilov +2
Magnetic order and spin dynamics in La2O2Fe2OSe2 probed by 57Fe-Moessbauer, 139La-NMR, and muon spin relaxation spectroscopy
M. Günther, S. Kamusella, R. Sarkar +10
Anomalous low-energy phonons in nearly tetragonal BiFeO3 thin films
K. -Y. Choi, S. H. Do, P. Lemmens +5
Existence of Orbital Order and its Fluctuation in Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$ Revealed by X-ray Absorption Spectroscopy
Y. K. Kim, W. S. Jung, G. R. Han +13
Orbiton-mediated multi-phonon scattering in La$_{1-x}$Sr$_x$MnO$_3$
K. -Y. Choi, P. Lemmens, G. Güntherodt +6
Electronic and phonon excitations in α-RuCl$_3$
S. Reschke, F. Mayr, Zhe Wang +3
Quantum criticality in the coupled two-leg spin ladder Ba2CuTeO6
A. Glamazda, Y. S. Choi, S. -H. Do +8
Magnetite: Raman study of the high-pressure and low-temperature effects
L. V. Gasparov, D. Arenas, K. -Y. Choi +6
Evidence for an unconventional magnetic instability in the spin-tetrahedra system Cu_2Te_2O_5Br_2
P. Lemmens, K. -Y. Choi, E. E. Kaul +8
Revisiting the chain magnetism in Sr14Cu24O41: Experimental and numerical results
R. Klingeler, B. Buchner, K. -Y. Choi +4
Dynamical Behavior of Spins in the Rare-Earth Kagomé Pr$_3$Ga$_5$SiO$_{14}$
L. L. Lumata, K. -Y. Choi, T. Besara +7
Strong anisotropy of superexchange in the copper-oxygen chains of La_{14-x}Ca_{x}Cu_{24}O_{41}
V. Kataev, K. -Y. Choi, M. Grüninger +4
Putative spin liquid in the triangle-based iridate Ba$_3$IrTi$_2$O$_9$
W. -J. Lee, S. -H. Do, Sungwon Yoon +10
Charge density waves in Sr_14-xCa_xCu_24O_41: electron correlations vs. structural effects
K. -Y. Choi, M. Grove, P. Lemmens +7
Persistence of singlet fluctuations in the coupled spin tetrahedra system Cu2Te2O5Br2 revealed by high-field magnetization and 79Br NQR - 125Te NMR
S. -H. Baek, K. -Y. Choi, H. Berger +2
Stabilization of charge and orbital ordered states by antiferromagnetism in the A-site ordered YBaMn2O6
X. N. Zhang, K. -Y. Choi, P. Lemmens +2
ESR study of (Sr,La,Ca)_{14}Cu_{24}O_{41}
V. Kataev, K. -Y. Choi, M. Grueninger +4
Raman spectroscopic signature of fractionalized excitations in the harmonic-honeycomb iridates $β$- and $γ$-Li$_2$IrO$_3$
A. Glamazda, P. Lemmens, S. -H. Do +2
Coexistence of dimerization and long-range magnetic order in the quantum antiferromagnetic compound LiCu2O2: inelastic light scattering study
K. -Y. Choi, S. A. Zvyagin, G. Cao +1
Longitudinal magnon in the tetrahedral spin system Cu2Te2O5Br2 near quantum criticality
C. Gros, P. Lemmens, M. Vojta +8
Evidence for a Field-induced Quantum Spin Liquid in $α$-RuCl$_3$
S. -H. Baek, S. -H. Do, K. -Y. Choi +5
Hole stripe and orbital fluctuating state in LaMnO$_{3+δ}$ ($0.085\leq δ\leq0.125$) unveiled by Raman spectroscopy
Yu. G. Pashkevich, V. P. Gnezdilov, P. Lemmens +8
Two inequivalent sublattices and orbital ordering in MnV2O4 studied by 51V NMR
S. -H. Baek, N. J. Curro, K. -Y. Choi +4
Iron pnictides: Single crystal growth and effect of doping on structural, transport and magnetic properties
G. L. Sun, D. L. Sun, M. Konuma +6
Quantum phase transition in the dioptase magnetic lattice
C. Gros, P. Lemmens, K. -Y. Choi +3
Coherent manipulation of electron spins up to ambient temperatures in Cr$^{5+}$(S=1/2) doped K$_3$NbO$_8$
S. Nellutla, K. -Y. Choi, M. Pati +3
Magnetic excitations and phonons in the spin-chain compound NaCu2O2
K. -Y. Choi, V. P. Gnezdilov, P. Lemmens +6
Field-induced quantum criticality in the Kitaev system $α$-RuCl$_3$
A. U. B. Wolter, L. T. Corredor, L. Janssen +9
Lattice and electronic anomalies of CaFe_2As_2 studied by Raman spectroscopy
K. -Y. Choi, D. Wulferding, P. Lemmens +3
AC Susceptibility and Electron Spin Resonance Studies of Spin Dynamics in n Ba$_3$NbFe$_3$Si$_2$O$_{14}$: A Geometrically Frustrated Lattice
K. -Y. Choi, Z. -X. Wang, A. Ozarowski +4
Relation between Kitaev magnetism and structure in $α$-RuCl$_3$
A. Glamazda, P. Lemmens, S. -H. Do +2
Evidence for Dimer Crystal Melting in the Frustrated Spin-Ladder BiCu2PO6
K. -Y. Choi, J. W. Hwang, P. Lemmens +3
AC susceptibility and $^{51}$V NMR study of MnV$_2$O$_4$
S. -H. Baek, K. -Y. Choi, A. P. Reyes +6