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Article overview
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Low temperature thermodynamic investigation of the phase diagram of Sr3Ru2O7 | | Dan Sun
; Andreas Rost
; Robin Perry
; Andrew Mackenzie
; Manuel Brando
; | | Date: |
2 May 2016 | | Abstract: | We present heat capacity and magnetocaloric effect data from a comprehensive
study of Sr3Ru2O7. By combining information from different experimental setups
and techniques, we acquired a detailed dataset covering the temperature range
from 4K to 60 mK, and fields between 0 and 12 T. By lowering the base
temperature of measurement by a factor of four compared to that of previous
specific heat and magnetocaloric experiments, we discovered a new quantum
critical point at 7.5 T, close to the region in which an anomalous phase is
found. We also determined that the boundaries of a putative higher field phase,
in which neutron measurements show an incommensurate spin modulation at Q =
(0.218, 0, 0) and symmetry breaking fields induce large transport anisotropies,
are marked by weak thermodynamic features. However, several characteristics
expected of equilibrium phase transitions are not observed. | | Source: | arXiv, 1605.0396 | | Services: | Forum | Review | PDF | Favorites | |
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