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Direct Observation of Magnon Fractionalization in the Quantum Spin Ladder
B. Thielemann, Ch. Rüegg, H. M. Rønnow +12
We measure by inelastic neutron scattering the spin excitation spectra as a function of applied magnetic field in the quantum spin-ladder material (C5H12N)2CuBr4. Discrete magnon m…
Solids and supersolids of three-body interacting polar molecules in an optical lattice
Kai P. Schmidt, Julien Dorier, Andreas Laeuchli
We study the physics of cold polar molecules loaded into an optical lattice in the regime of strong three-body interactions, as put forward recently by Büchler [Nature Phys. 3, 726…
Orbital currents in extended Hubbard models of high-T cuprates
Cédric Weber, Andreas Laeuchli, Frédéric Mila +1
Motivated by the recent report of broken time-reversal symmetry and zero momentum magnetic scattering in underdoped cuprates, we investigate under which circumstances orbital curre…