Spin-orbit Coupling and Correlations

Excitonic quasiparticles in a spin–orbit Mott insulator
Jungho Kim, M. Daghofer, A.H. Said, T. Gog, J. van den Brink, G. Khaliullin, B.J. Kim
Nature Comm. 5, 4453, 17 July 2014

Fermi arcs in a doped pseudospin-1/2 Heisenberg antiferromagnet
Y. K. Kim1, O. Krupin, J. D. Denlinger, A. Bostwick, E. Rotenberg, Q. Zhao, J. F. Mitchell, J. W. Allen, B. J. Kim.
Science Vol. 345 no. 6193 pp. 187-190 (2014); published 12 June 2014.
 
Fano Resonances in the Infrared Spectra of Phonons in Hyperkagome Na₃Ir₃O₈
D. Pröpper, A. N. Yaresko, T. I. Larkin, T. N. Stanislavchuk, A. A. Sirenko, T. Takayama, A. Matsumoto, H. Takagi, B. Keimer, and A. V. Boris.
Phys. Rev. Lett. 112 (2014) 087401; published 26 February 2014.
 
Zigzag Magnetic Order in the Iridium Oxide Na₂IrO₃
J. Chaloupka, G. Jackeli, G. Khaliullin.
Phys. Rev. Lett. 110 (2013) 097204; published 28 February 2013.
 
Magnetic couplings, optical spectra, and spin-orbit exciton in 5d electron Mott insulator Sr₂IrO₄
B. H. Kim, G. Khaliullin, B. I. Min.
Phys. Rev. Lett. 109 (2012) 167205; published 17 October 2012.
 
Large spin-wave energy gap for the bilayer iridate Sr₃Ir₂O₇: Evidence for enhanced dipolar interactions near the Mott metal-insulator transition
J. Kim, A. H. Said, D. Casa, M. H. Upton, T. Gog, M. Daghofer, G. Jackeli, J. van den Brink, G. Khaliullin, B. J. Kim.
Phys. Rev. Lett. 109 (2012), 157402; published 10 October 2012.
 
Dimensionality driven spin-flop transition in layered iridates
J. W. Kim, Y. Choi, J. Kim, J. F. Mitchell, G. Jackeli, M. Daghofer, J. van den Brink, G. Khaliullin, and B. J. Kim.
Phys. Rev. Lett. 109 (2012), 037204; published 17 July 2012.
 

 

Competing Exchange Interactions on the Verge of a Metal-Insulator Transition in the Two-Dimensional Spiral Magnet Sr₃Fe₂O₇
J.-H. Kim, Anil Jain, M. Reehuis, G. Khaliullin, D. C. Peets, C. Ulrich, J. T. Park, E. Faulhaber, A. Hoser, H. C. Walker, D. T. Adroja, A. C. Walters, D. S. Inosov, A. Maljuk, and B. Keimer.
Phys. Rev. Lett. 113, 147206; published 03. October 2014

Magnetic neutron diffraction study of the charge-ordered chain compounds Rb₁₁Mn₈O₁₆ and Cs₃Mn₂O₄
M. Reehuis, M. A. Señaris-Rodriguez, A. Hoser, B. Keimer, M. Jansen.
Phys. Rev. B 87, 014426 – Published 24 January 2013

Magnetic phase diagram of Sr₃Fe₂O_7-x
D. C. Peets J.-H. Kim, P. Dosanjh, M. Reehuis, A. Maljuk, N. Aliouane, C. Ulrich, B. Keimer.
Phys. Rev. Lett 87 (2013) 214410; published 10 June 2013.

Neutron diffraction study of spin and charge ordering in SrFeO_3−δ
M. Reehuis, C. Ulrich, A. Maljuk, Ch. Niedermayer, B. Ouladdiaf, A. Hoser, T. Hofmann, B. Keimer.
Phys. Rev. Lett. B 85 (2012), 184109; published 22 May 2012.

Bond randomness induced magnon decoherence in a spin-½ ladder compound
B. Náfrádi, T. Keller, H. Manaka, U. Stuhr, A. Zheludev, B. Keimer.
Phys. Rev B 87 (2013) 020408; published 28 January 2013.

Low-Temperature Dynamics of Magnons in a Spin-1/2 Ladder Compound
B. Náfrádi, T. Keller, H. Manaka, A. Zheludev, B. Keimer.
Phys. Rev. Lett. 106 (2011), 177202; published 25 April 2011.

Anisotropic optical response of the mixed-valent Mott-Hubbard insulator NaCu₂O₂
Y. Matiks, A. N. Yaresko, K. Myung-Whun, A. Maljuk, P. Horsch, B. Keimer, A. V. Boris.
Phys. Rev. B 84 (2011), 245116; published 13 December 2011.

Formation and rotation of skyrmion crystal in the chiral-lattice insulator Cu₂OSeO₃
S. Seki, J.-H. Kim, D. S. Inosov, R. Georgii, B. Keimer, S. Ishiwata, and Y. Tokura.
Phys. Rev. B 85 (2012), 220406(R); published 22 June 2012.

Possible skyrmion-lattice ground state in the B20 chiral-lattice magnet MnGe as seen via small-angle neutron scattering
N. Kanazawa, J.-H. Kim, D. S. Inosov, J. S. White, N. Egetenmeyer, J. L. Gavilano, S. Ishiwata, Y. Onose, T. Arima, B. Keimer, Y. Tokura.
Phys. Rev. B 86 (2012) 134425; published 25 October 2012.

Intense low-energy ferromagnetic fluctuations in the antiferromagnetic heavy-fermion metal CeB₆
Hoyoung Jang, G. Friemel, J. Ollivier, A. V. Dukhnenko, N. Yu. Shitsevalova, V. B. Filipov, B. Keimer
Nature Materials published 11 May 2014.

Resonant magnetic exciton mode in the heavy-fermion antiferromagnet CeB₆
G. Friemel, Yuan Li, A. V. Dukhnenko, N. Yu. Shitsevalova, N. E. Sluchanko, A. Ivanov, V. B. Filipov, B. Keimer, D. S. Inosov.
Nature Communications 3 (2012), 830; published 15 May 2012.