Publications (100)
Spin gap formation in the quantum spin systems TiOX, X=Cl and Br
P. Lemmens, K. Y. Choi, R. Valenti +4
Possible spin-orbit driven spin-liquid ground state in the double perovskite phase of Ba3YIr2O9
Tusharkanti Dey, A. V. Mahajan, R. Kumar +4
S=1/2 chains and spin-Peierls transition in TiOCl
Alexander Seidel, Chris A. Marianetti, F. C. Chou +2
Study of structure and lattice dynamics of the Sr$_2$CuO$_2$Cl$_2$(001) surface by helium-atom scattering
M. Farzaneh, XF. Liu, M. El-Batanouny +1
Diluted magnetism in Mn doped SrZnO2 single crystals
M. R. Rahman, B. Koteswararao, S. H. Huang +2
Tellurium-bridged two-leg spin ladder in Ba$_2$CuTeO$_6$
G. Narsinga Rao, R. Sankar, Akansha Singh +5
Analysis of the phonon spectrum in the titanium oxyhalide TiOBr
G. Caimi, L. Degiorgi, P. Lemmens +1
Singlet-Triplet Excitations in the Unconventional Spin-Peierls System TiOBr
J. P. Clancy, B. D. Gaulin, C. P. Adams +4
THz Generation and Detection on Dirac Fermions in Topological Insulators
C. W. Luo, C. C. Lee, H. -J. Chen +18
Finite-size effect of antiferromagnetic transition and electronic structure in LiFePO4
G. J. Shu, M. W. Wu, F. C. Chou
Magnetic ordering in electronically phase separated Sr/O co-doped La(2-x)Sr(x)CuO(4+y)
L. Udby, N. H. Andersen, F. C. Chou +7
Molecular orbital excitations in cuprates
Young-June Kim, J. P. Hill, G. D. Gu +10
Critical spin dynamics of the 2D quantum Heisenberg antiferromagnets: Sr_2CuO_2Cl_2 and Sr_2Cu_3O_4Cl_2
Y. J. Kim, R. J. Birgeneau, F. C. Chou +2
Anomalous electronic Raman scattering in Na_xCoO_2 H_2O
P. Lemmens, K. Y. Choi, V. Gnezdilov +5
Spin liquid behaviour in Jeff=1/2 triangular lattice Ba3IrTi2O9
Tusharkanti Dey, A. V. Mahajan, P. Khuntia +3
pi-bonds in graphene and surface of topological insulator Bi2Se3
G. J. Shu, S. C. Liou, F. C. Chou
Local moment, itinerancy and deviation from Fermi liquid behavior in Na$_x$CoO$_2$ for $0.71 \leq x \leq 0.84$
L. Balicas, Y. J. Jo, G. J. Shu +2
Flux pinning and phase separation in oxygen rich La2-xSrxCuO4+y system
Hashini E. Mohottala, B. O. Wells, J. I. Budnick +3
Comment on "Raman spectroscopy study of NaxCoO2 and superconducting NaxCoO2 yH2O"
P. Lemmens, P. Scheib, Y. Krockenberger +5
A topological crystalline insulator (TCI) phase via topological phase transition and crystalline mirror symmetry
Su-Yang Xu, Chang Liu, Nasser Alidoust +18
17O NMR Study of the Local Charge State in the Hole Doped Cu2O3 Two-Leg Spin-Ladder A14Cu24O41 (A=La6Ca8, Sr14, Sr11Ca3, Sr6Ca8)
K. R. Thurber, K. M. Shen, A. W. Hunt +2
Sodium ion ordering of Na0.77CoO2 under competing multi-vacancy cluster, superlattice and domain formation
F. -T. Huang, G. J. Shu, M. -W. Chu +4
Lifshitz transition and van Hove singularity in a Topological Dirac Semimetal
Su-Yang Xu, Chang Liu, I. Belopolski +20
Orbital Symmetry and Electron Correlation in Na_{x}CoO_2
W. B. Wu, D. J. Huang, J. Okamoto +5
Oxygen non-stoichiometry and the origin of Na ion ordering in P2-NaxCoO2
G. J. Shu, W. L. Lee, F. -T. Huang +3
Plasmons dispersion and nonvertical interband transitions in single-crystal Bi2Se3 investigated by electron energy loss spectroscopy
S. C. Liou, M. -W. Chu, R. Sankar +4
Absence of static magnetic order in lightly-doped Ti1-xScxOCl down to 1.7 K
A. A. Aczel, G. J. MacDougall, F. L. Ning +5
Observation of a bulk 3D Dirac multiplet, Lifshitz transition, and nestled spin states in Na3Bi
Su-Yang Xu, Chang Liu, S. K. Kushwaha +20
63Cu NQR evidence of dimensional crossover to anisotropic 2d regime in S= 1/2 three-leg ladder Sr2Cu3O5
K. R. Thurber, T. Imai, T. Saitoh +3
Structural transition in NaxCoO2 with x near 0.75 due to Na rearrangement
Q. Huang, B. Khaykovich, F. C. Chou +3
Interaction of Phonons and Dirac Fermions on the Surface of Bi2Se3: A Strong Kohn Anomaly
Xuetao Zhu, L. Santos, R. Sankar +5
Universal Ratio of Intrinsic Resistivities of Spin Helix in B20 (Fe-Co)Si Magnets
S. X. Huang, Jian Kang, Fei Chen +6
Saddle point singularity and topological phase diagram in a tunable topological crystalline insulator (TCI)
Madhab Neupane, Su-Yang Xu, R. Sankar +15
Li non-stoichiometry and crystal growth of untwinned 1D quantum spin system Lix Cu2 O2
H. C. Hsu, H. L. Liu, F. C. Chou
PbCu3TeO7: An S=1/2 staircase Kagome lattice with significant intra- and inter-plane couplings
B. Koteswararao, R. Kumar, Jayita Chakraborty +5
Intercalation and Staging Behavior in Super-Oxygenated $La_2CuO_{4 + δ}$
B. O. Wells, R. J. Birgeneau, F. C. Chou +7
X-ray Scattering Study of the spin-Peierls transition and soft phonon behavior in TiOCl
E. T. Abel, K. Matan, F. C. Chou +5
Spin-Dynamics in the Carrier-Doped $S=1/2$ Triangular-Lattice of Na$_{x}$CoO$_{2}$-yH$_{2}$O
F. L. Ning, T. Imai, B. W. Statt +1
Spontaneous parity symmetry breaking of pi-bonds in 2D: describing topological insulators in real space
G. J. Shu, F. C. Chou
Evidence for Dimer Crystal Melting in the Frustrated Spin-Ladder BiCu2PO6
K. -Y. Choi, J. W. Hwang, P. Lemmens +3
Neutron scattering study of novel magnetic order in Na0.5CoO2
G. Gasparovic, R. A. Ott, J. -H. Cho +4
Nonstoichiometric doping and Bi antisite defect in single crystal Bi2Se3
F. -T. Huang, M. -W. Chu, H. H. Kung +6
Magnetoresistance due to Broken C4 Symmetry in Cubic B20 Chiral Magnets
S. X. Huang, Fei Chen, Jian Kang +4
Shubnikov de Haas effect in the metallic state of Na$_{0.3}$CoO$_2$
L. Balicas, J. G. Analytis, Y. J. Jo +6
Critical properties of the unconventional spin-Peierls system TiOBr
J. P. Clancy, B. D. Gaulin, F. C. Chou
Magnetic susceptibility study of hydrated and non-hydrated NaxCoO2-yH2O single crystals
F. C. Chou, J. H. Cho, Y. S. Lee
Sodium Trimer Ordering on NaxCoO2 Surface
Woei Wu Pai, S. H. Huang, Ying S. Meng +4
Dielectric signatures of lattice instabilities at 32K and 245K in $La_{2-y}Sr_{y}MO_{4+x}$ (M=Cu,Ni) Cuprates and Nickelates
P. V. Parimi, N. Hakim, F. C. Chou +2
Oxygen non-stoichiometry and the origin of Na ion ordering in gamma-NaxCoO2
G. J. Shu, W. L. Lee, F. -T. Huang +3
Electrochemical De-intercalation, Oxygen Non-stoichiometry, and Crystal Growth of NaxCoO2-d
F. C. Chou, E. T. Abel, J. H. Cho +1
Superconducting to spin glass state transformation in Ã-pyrochlore KxOs2O6
C. C. Lee, W. L. Lee, J. -Y. Lin +3
Enhanced quasiparticle dynamics of quantum well states: the giant Rashba system BiTeI and topological insulators
V. Gnezdilov, P. Lemmens, D. Wulferding +5
Anomalous behavior in the phonon dispersion of the (001) surface of Bi$_2$Te$_3$ determined from helium atom-surface scattering measurements
Colin Howard, M. El-Batanouny, R. Sankar +1
Magnetic-field-induced Fermi surface reconstruction in Na$_{0.5}$CoO$_2$
L. Balicas, M. Abdel-Jawad, N. E. Hussey +2
Magneto-transport in copper-doped noncentrosymmetric BiTeI
Chang-Ran Wang, Jen-Chuan Tung, S. Sankar +5
Surface conduction and pi-bonds in graphene and topological insulator Bi2Se3
G. J. Shu, F. C. Chou
Commensurate Fluctuations in the Pseudogap and Incommensurate spin-Peierls Phases of TiOCl
J. P. Clancy, B. D. Gaulin, K. C. Rule +2
Searching for Stable Na-ordered Phases in Single Crystal Samples of gamma-NaxCoO2
G. J. Shu, Andrea Prodi, S. Y. Chu +3
Two-step antiferromagnetic transition and moderate triangular frustration in Li2Co(WO4)2
I. Panneer Muthuselvam, R. Sankar, A. V. Ushakov +3
Effect of Na content and hydration on the excitation spectrum of the cobaltite Na_xCoO_2 yH_2O
P. Lemmens, V. Gnezdilov, N. N. Kovaleva +8
Antiferromagnetism of Ni2NbBO6 with S = 1 dimer quasi-one-dimensional armchair chains
G. Narsinga Rao, Viveka Nand Singh, R. Sankar +3
Incommensurate dynamic correlations in the quasi-two-dimensional spin liquid BiCu2PO6
K. W. Plumb, Zahra Yamani, M. Matsuda +4
Neutron scattering study of the effects of dopant disorder on the superconductivity and magnetic order in stage-4 La_2CuO_{4+y}
Y. S. Lee, F. C. Chou, A. Tewary +3
An X-Ray Induced Structural Transition in La_0.875Sr_0.125MnO_3
V. Kiryukhin, Y. J. Wang, F. C. Chou +2
Magnetic properties and heat capacity of the three-dimensional frustrated S=1/2 antiferromagnet PbCuTe2O6
B. Koteswararao, R. Kumar, P. Khuntia +8
The infrared conductivity of Na$_x$CoO$_2$: evidence of gapped states
J. Hwang, J. Yang, T. Timusk +1
Electron-phonon interaction in the lamellar cobaltate Na$_x$CoO$_2$
A. Donkov, M. M. Korshunov, I. Eremin +4
Topological phase diagram and saddle point singularity in a tunable topological crystalline insulator
Madhab Neupane, Su-Yang Xu, R. Sankar +17
Sr impurity effects on the magnetic correlations of LaSrCuO
R. J. Gooding, N. M. Salem, R. J. Birgeneau +1
Observation of S = 1/2 quasi-one-dimensional magnetic and magneto-dielectric behavior in a cubic SrCuTe2O6
B. Koteswararao, S. K. Panda, R. Kumar +6
Nonmagnetic impurity perturbation to the quasi-two-dimensional quantum helimagnet LiCu2O2
H. C. Hsu, J. -Y. Lin, W. L. Lee +6
17O NMR study of q=0 spin excitations in a nearly ideal S=1/2 1D Heisenberg antiferromagnet, Sr2CuO3, up to 800 K
K. R. Thurber, A. W. Hunt, T. Imai +1
Novel Spin-Gap Behavior in Layered S=1/2 Quantum Spin System TiOCl
T. Imai, F. C. Chou
Large transverse Hall-like signal in topological Dirac semimetal Cd3As2
Shih-Ting Guo, R. Sankar, Yung-Yu Chien +5
Hierarchical spin-orbital polarisation of a giant Rashba system
L. Bawden, J. M. Riley, C. H. Kim +15
Infrared optical properties of the spin-1/2 quantum magnet $TiOCl$
G. Caimi, L. Degiorgi, N. N. Kovaleva +2
Phonon scattering and stability of Na_0.5CoO_2
X. N. Zhang, P. Lemmens, V. Gnezdilov +5
Charge and orbital excitations in Li2CuO2
Young-June Kim, J. P. Hill, F. C. Chou +3
^{59}Co NMR evidence for charge ordering below T_{CO}\sim 51 K in Na_{0.5}CoO_2
F. L. Ning, S. M. Golin, K. Ahilan +3
Electronic phase diagram of LixCoO2 revisited with potentiostatically de-intercalated single crystals
T. Y. Ou-Yang, F. -T. Huang, G. J. Shu +4
Investigation of the Structural and Dynamical Properties of the (001) Surface of LiCu2O2
Yangyang Yao, Xuetao Zhu, H. C. Hsu +2
Spin Freezing and Melting in Na$_{0.5}$CoO$_{2}$
T. Imai, F. L. Ning, M. Van Dyken +3
Graphene-like conjugated pi-bond system in Pb1-xSnxSe
G. J. Shu, S. C. Liou, S. Karna +4
Quasiparticle-continuum level repulsion in a quantum magnet
K. W. Plumb, Kyusung Hwang, Y. Qiu +7
X-ray scattering study of two length scales in the critical fluctuations of CuGeO3
Y. J. Wang, Y. -J. Kim, R. J. Christianson +3
Direct Observation of the Quantum Energy Gap in S = 1/2 Tetragonal Cuprate Antiferromagnets
K. Katsumata, M. Hagiwara, Z. Honda +9
High-field ESR studies of the quantum spin magnet CaCu2O3
M. Goiran, M. Costes, J. M. Broto +6
Effect of a magnetic field on long-range magnetic order in stage-4 and stage-6 superconducting La2CuO(4+y)
B. Khaykovich, R. J. Birgeneau, F. C. Chou +7
High-Energy Continuum of Magnetic Excitations in the Two-Dimensional Quantum Antiferromagnet Sr2CuO2Cl2
K. W. Plumb, A. T. Savici, G. E. Granroth +2
Comparison of Resonant Inelastic X-Ray Scattering Spectra and Dielectric Loss Functions in Copper Oxides
Jungho Kim, D. S. Ellis, H. Zhang +5
Neutron Scattering study of Sr_2Cu_3O_4Cl_2
Y. J. Kim, R. J. Birgeneau, F. C. Chou +10
Suppression of the commensurate spin-Peierls state in Sc-doped TiOCl
J. P. Clancy, B. D. Gaulin, J. P. Castellan +2
Direct proof of unique magnetic and superconducting phases in superoxygenated high-Tc cuprates
L. Udby, J. Larsen, N. B. Christensen +9
Staging model of the ordered stacking of vacancy layers and phase separation in the layered NaCoO(x > 0.71) single crystals
G. J. Shu, F. -T. Huang, M. -W. Chu +3
X-ray Scattering and Magnetic Susceptibility Study of doped CuGeO_3
Y. J. Wang, Y. J. Kim, R. J. Christianson +6
Observation of magnetoelectric effects in a S=1/2 frustrated spin chain magnet SrCuTe2O6
B. Koteswararao, Kyongjun Yoo, F. C. Chou +1
Spin Liquid State in the 3D Frustrated Antiferromagnet PbCuTe2O6: NMR and muSR Studies
P. Khuntia, F. Bert, P. Mendels +7
Temperature-Dependent Anomalies in the Structure of the (001) Surface of LiCu2O2
Xuetao Zhu, Yangyang Yao, H. C. Hsu +2
Sodium vacancy ordering and the co-existence of localized spins and itinerant charges in NaxCoO2
F. C. Chou, M. -W. Chu, G. J. Shu +6
Thermodynamic and Transport Measurements on Superconducting Na_xCoO_2 + yH_2O Single Crystals Prepared by Electrochemical De-intercalation
F. C. Chou, J. H. Cho, Patrick A. Lee +3