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Title: Nonlinear transport in quasi-one-dimensional Nb{sub 2}PdS{sub 5} nanowires

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.
Authors:
; ; ; ; ; ;  [1] ;  [2] ;  [3] ; ;  [1] ;  [4]
  1. High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, Anhui (China)
  2. Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 (China)
  3. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306-4005 (United States)
  4. (China)
Publication Date:
OSTI Identifier:
22310665
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; CRITICAL FIELD; CRYSTALS; ELECTRIC POTENTIAL; ELECTRONS; LIQUIDS; NANOWIRES; NIOBIUM COMPOUNDS; NONLINEAR PROBLEMS; ONE-DIMENSIONAL CALCULATIONS; PALLADIUM COMPOUNDS; QUANTUM WIRES; SATURATION; SULFUR COMPOUNDS; SUPERCONDUCTORS; TEMPERATURE RANGE 0013-0065 K