Nonlinear transport in quasi-one-dimensional Nb{sub 2}PdS{sub 5} nanowires
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, Anhui (China)
- Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 (China)
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306-4005 (United States)
Nb{sub 2}PdS{sub 5} is a newly discovered quasi-one-dimensional (quasi-1D) superconductor with a high upper critical field along the chain direction. Here, we report the size-dependent electronic properties of Nb{sub 2}PdS{sub 5} nanowires obtained by ultrasonically cleaving the bulk crystals. The nanowires exhibit a superconductor to insulator transition as the cross-sectional area decreases. Moreover, for the thinner nanowires with insulating state, the transport properties exhibit a power-law dependence on both temperature and bias voltage at an intermediate temperature (<30 K), followed by a conduction saturation below 10 K. We found that such an apparent power-law behavior can be described by the extended variable range hopping theory developed recently for the multichannel quasi-1D systems, where the localization of electrons is expected to be dominant instead of the Luttinger liquid nature.
- OSTI ID:
- 22310665
- Journal Information:
- Applied Physics Letters, Vol. 105, Issue 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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