6 papers
Ferromagnetism makes a doped semiconductor less shiny
F. P. Mena, J. F. DiTusa, D. van der Marel +5
Magnetic semiconductors have attracted interest because of the question of how a magnetic metal can be derived from a paramagnetic insulator. Here our approach is to carrier dope i…
Quantum Annealing of a Disordered Magnet
J. Brooke, D. Bitko, T. F. Rosenbaum +1
Traditional simulated annealing utilizes thermal fluctuations for convergence in optimization problems. Quantum tunneling provides a different mechanism for moving between states,…
Antiferromagnetic vortex state in a high-temperature superconductor
B. Lake, H. M. Ronnow, N. B. Christensen +10
There is strong evidence that magnetic interactions play a crucial role in the mechanism driving high-temperature superconductivity in cuprate superconductors. To investigate this…
Anisotropic three-dimentional magnetic fluctuations in heavy fermion CeRhIn5
Wei Bao, G. Aeppli, J. W. Lynn +5
CeRhIn5 is a heavy fermion antiferromagnet that orders at 3.8 K. The observation of pressure-induced superconductivity in CeRhIn5 at a very high Tc of 2.1 K for heavy fermion mater…
Spin dynamics of the model 2D quantum antiferromagnet CFTD
H. M. Ronnow, D. F. McMorrow, R. Coldea +7
The magnetic excitation spectrum in the two-dimensional (2D) S=1/2 Heisenberg antiferromagnet copper deuteroformate tetradeuterate (CFTD) has been measured for temperatures up to T…
Neutron Scattering Studies of Heavy Fermion Systems
T. E. Mason, G. Aeppli
We review the results of recent studies of the elastic and inelastic neutron scattering from a variety of heavy fermion compounds. This class of materials exhibits a rich variety o…