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Preprint
Magnetization Properties and Vortex Phase Diagram in CuxTiSe2 Single Crystals
arXiv (Cornell University)
06 Oct 2013
Abstract
We have investigated the magnetization properties and flux dynamics of
superconducting Cu$_x$TiSe$_2$ single crystals within wide range of copper
concentrations. We find that the superconducting anisotropy is low and
independent on copper concentration ($\gamma\sim1.7$), except in the case of
strongly underdoped samples ($x\leq0.06$) that show a gradual increase in
anisotropy to $\gamma\sim1.9$. The vortex phase diagram in this material is
characterized by broad region of vortex liquid phase that is unusual for such
low-$T_c$ superconductor with low anisotropy. Below the irreversibility line
the vortex solid state supports relatively low critical current densities as
compared to the depairing current limit ($J_c/J_0\sim10^{-7}$). All this points
out that local fluctuations in copper concentration have little effect on bulk
pinning properties in this system.
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Details
- Title
- Magnetization Properties and Vortex Phase Diagram in CuxTiSe2 Single Crystals
- Creators
- P HusanikovaJ FedorJ DererJ SoltysV CambelM IavaroneS. J MayG Karapetrov
- Publication Details
- arXiv (Cornell University)
- Resource Type
- Preprint
- Language
- English
- Academic Unit
- Physics; Materials Science and Engineering
- Other Identifier
- 991021934210204721