3 papers
cond-mat.stat-mech2025
1/f^{3/2} Spectral Density at the Phonon Bottleneck
Steven T. Bramwell
The common observation of anomalous `' relaxation with constitutes one of the enduring mysteries of condensed matter physics. Here it is shown that a spectr…
cond-mat.stat-mech2025
Sample shape dependence of magnetic noise
Steven T. Bramwell
Zero-field magnetic noise, characterised by the magnetic autocorrelation function , has been observed, perhaps surprisingly, to depend on sample shape . The reasons for…
cond-mat.str-el2024
Power spectrum of magnetic relaxation in spin ice: anomalous diffusion in a Coulomb fluid
D. Billington, E. Riordan, C. Cafolla-Ward +7
Magnetization noise measurements on the spin ice DyTiO have revealed a remarkable `pink noise' power spectrum below 4 K, including evidence of magnetic m…