360 citations · 1.2k across the 17 of their papers we have counts for
17 papers
Collective magnetic dynamics in artificial spin ice probed by AC susceptibility
Merlin Pohlit, Giuseppe Muscas, Ioan-Augustin Chioar +8
We report on the study of the thermal dynamics of square artificial spin ice, probed by means of temperature and frequency dependent AC susceptibility. Pronounced influence of the…
Comment on "Quantum and Classical Glass Transitions in LiHoYF" by C. Ancona-Torres, D.M. Silevitch, G. Aeppli, and T. F. Rosenbaum, Phys. Rev. Lett. 101, 057201 (2008)
P. E. Jönsson, R. Mathieu, W. Wernsdorfer +2
We show in this comment that the claim by Ancona-Torres et al. of an equilibrium quantum or classical phase transition in the LiHoYF system is not supported by a ri…
Absence of Conventional Spin-Glass Transition in the Ising Dipolar System LiHo_xY_{1-x}F_4
P. E. Jönsson, R. Mathieu, W. Wernsdorfer +2
The magnetic properties of single crystals of LiHo_xY_{1-x}F_4 with x=16.5% and x=4.5% were recorded down to 35 mK using a micro-SQUID magnetometer. While this system is considered…
Electron Correlation Driven Heavy-Fermion Formation in LiV2O4
P. E. Jönsson, K. Takenaka, S. Niitaka +3
Optical reflectivity measurements were performed on a single crystal of the d-electron heavy-fermion (HF) metal LiV2O4. The results evidence the highly incoherent character of the…
Aging and Memory Effects in Superparamagnets and Superspin Glasses
M. Sasaki, P. E. Jönsson, H. Takayama +1
Many dense magnetic nanoparticle systems exhibit slow dynamics which is qualitatively indistinguishable from that observed in atomic spin glasses and its origin is attributed to di…
Comment on "Memory Effects in an Interacting Magnetic Nanoparticle System"
M. Sasaki, P. E. Jönsson, H. Takayama +1
In Phys. Rev. Lett. 91 167206 (2003), Sun et al. study memory effects in an interacting nanoparticle system with specific temperature and field protocols. The authors claim that th…