Sengupta, Shamashis ; Solanki, Hari S. ; Singh, Vibhor ; Dhara, Sajal ; Deshmukh, Mandar M. (2010) Electromechanical resonators as probes of the charge density wave transition at the nanoscale in NbSe2 Physical Review B: Condensed Matter and Materials Physics, 82 (15). ISSN 1098-0121
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Official URL: http://doi.org/10.1103/PhysRevB.82.155432
Related URL: http://dx.doi.org/10.1103/PhysRevB.82.155432
Abstract
We study nanoelectromechanical resonators fabricated from suspended flakes of NbSe2 (thickness∼30–50 nm) to probe charge density wave (CDW) physics at nanoscale. Variation in elastic and electronic properties accompanying the CDW phase transition (around 30 K) are investigated simultaneously using the devices as self-sensing heterodyne mixers. Elastic modulus is observed to change by 10%, an amount significantly larger than what had been reported earlier in the case of bulk crystals. We also study the modulation of conductance by electric field effect, and examine its relation to the order parameter and the CDW energy gap at the Fermi surface.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 117656 |
| Deposited On: | 29 Apr 2021 05:50 |
| Last Modified: | 29 Apr 2021 05:50 |
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