Excitations from a chiral magnetized state of a frustrated quantum spin liquid (2009)
Zheludev, A., Garlea, V. O., Tsvelik, A., Habicht, K., Kiefer, K., ...
We study excitations in weakly interacting pairs of quantum spin ladders coupled through geometrically frustrated bonds. The ground state is a disordered spin liquid, that at high fields is replaced...
Moya, Xavier, Gonzalez-Alonso, David, Manosa, Lluis, Planes, Antoni, Garlea, V. O., Lograsso, T. A., ...
Neutron scattering and ultrasonic methods have been used to study the lattice dynamics of two single crystals of Ni-Mn-In Heusler alloys close to Ni$_{50}$Mn$_{34}$In$_{16}$ magnetic superelastic...
Effect of pressure on the quantum spin ladder material IPA-CuCl3 (2008)
Hong, Tao, Garlea, V. O., Zheludev, A., Fernandez-Baca, J., Manaka, H., Chang, S., ...
Inelastic neutron scattering and bulk magnetic susceptibility studies of the quantum S=1/2 spin ladder system IPA-CuCl3 are performed under hydrostatic pressure. The pressure dependence of the spin...
Dimensional crossover in a spin liquid to helimagnet quantum phase transition (2008)
Garlea, V. O., Zheludev, A., Habicht, K., Meissner, M., Grenier, B., ...
Neutron scattering is used to study magnetic field induced ordering in the quasi-1D quantum spin-tube compound Sul--Cu$_2$Cl$_4$ that in zero field has a non-magnetic spin-liquid ground state. The...
Quasi-universal finite-$T$ scaling in gapped one-dimensional quantum magnets (2007)
Zheludev, A., Garlea, V. O., Manaka, H., Tsvelik, A.
Temperature dependencies of gap energies and magnon lifetimes are measured in the quasi-1-dimensional S=1/2 gapped quantum magnets IPA-CuCl3 and Sul-Cu2Cl4 using inelastic neutron scattering. The...
Magnetic and orbital ordering in the spinel MnV2O4 (2007)
Garlea, V. O., Jin, R., Mandrus, D., Roessli, B., Huang, Q., Miller, M., ...
Neutron inelastic scattering and diffraction techniques have been used to study the MnV2O4 spinel system. Our measurements show the existence of two transitions to long-range ordered ferrimagnetic...
Gap excitations in a four-leg Heisenberg spin tube antiferromagnet (2007)
Garlea, V. O., Zheludev, A., Qiu, Y., Boehm, M., ...
Inelastic neutron scattering is used to investigate magnetic excitations in the quasi-one-dimensional quantum spin-liquid system Cu2Cl4 D8C4SO2. Contrary to previously conjectured models that relied...
Dynamics of quantum spin liquid and spin solid phases in IPA-CuCl3 under field (2007)
Zheludev, A., Garlea, V. O., Masuda, T., Manaka, H., Ressouche, E., ...
Inelastic and elastic neutron scattering is used to study spin correlations in the quasi-one dimensional quantum antiferromagnet IPA-CuCl3 in strong applied magnetic fields. A condensation of magnons...
Spin density distribution in a partially magnetized organic quantum magnet (2006)
Zheludev, A., Garlea, V. O., Nishihara, S., Hosokoshi, Y., Cousson, A., Gukasov, A., ...
Polarized neutron diffraction experiments on an organic magnetic material reveal a highly skewed distribution of spin density within the magnetic molecular unit. The very large magnitude of the...
Excitations from a Bose-Einstein condensate of magnons in coupled spin ladders (2006)
Garlea, V. O., Zheludev, A., Masuda, T., Ressouche, E., Brenier, B., ...
The weakly coupled quasi-one-dimensional spin ladder compound (CH$_3$)$_2$CHNH$_3$CuCl$_3$ is studied by neutron scattering in magnetic fields exceeding the critical field of Bose-Einstein...
Lattice dynamics and phonon softening in Ni-Mn-Al Heusler alloys (2006)
Moya, Xavier, Mañosa, Lluís, Planes, Antoni, Krenke, Thorsten, Acet, Mehmet, Garlea, V. O., ...
Inelastic and elastic neutron scattering have been used to study a single crystal of the Ni$_{54}$Mn$_{23}$Al$_{23}$ Heusler alloy over a broad temperature range. The paper reports the first...
Magnetic excitations in {Mo72Fe30} (2005)
Garlea, V. O., Nagler, S. E., Zarestky, J. L., Stassis, C., Vaknin, D., Kogerler, P., ...
We report cold-neutron inelastic neutron scattering measurements on deuterated samples of the giant polyoxomolybdate magnetic molecule {Mo72Fe30}. The 30 s = 5/2 Fe+3 ions occupy the vertices of an...