Volume 112, Number 2, October 2015
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||16 November 2015|
Single-valuedness problem on charge density wave rings
1 Department of Applied Physics, Hokkaido University - Sapporo 060-8628, Japan.
2 Center of Education and Research for Topological Science and Technology, Hokkaido University Sapporo 060-8628, Japan
3 Division of Quantum Science and Engineering, Hokkaido University - Sapporo 060-8628, Japan
Received: 20 June 2015
Accepted: 20 October 2015
We investigate the bimodal fluctuation of charge density wave (CDW) current through ring-shaped crystals (typical diameter is a few ten ) of orthorhombic tantalum trisulfide . We find that the CDW current changes between two types of the bimodal fluctuation, and exhibits hysteretic behavior as a function of the dc voltage. The hysteresis of the fluctuation modes suggests that the CDW rings involve several metastable sliding states, which might be a manifestation of single-valuedness of the CDW phase field with a strong periodic boundary condition of the ring geometry.
PACS: 71.45.Lr – Charge-density-wave systems / 72.15.Nj – Collective modes (e.g., in one-dimensional conductors) / 03.65.Vf – Phases: geometric; dynamic or topological
© EPLA, 2015
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.