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Transport and thermal properties of polycrystalline ZrTe5
- Source :
- Journal of Applied Physics. 127:235110
- Publication Year :
- 2020
- Publisher :
- AIP Publishing, 2020.
-
Abstract
- Studies on thermal and transport properties of topologically interesting polycrystalline ZrTe5 down to 2 K and magnetic fields up to 14 T are reported here. Attempts have been made to explain the metal insulator transition-like features seen in magnetic fields, a behavior characteristic of ZrTe5. The maximum in relative magnetoresistance (MRmax) for a particular magnetic field with respect to the peak temperature, i.e., Tp(B), shows an activated behavior reminiscent of polaronic conduction seen upon chemical substitution like Hf in Zr. Magnetoresistance is well described by a small polaron hopping transport model in a systematic way for various fields. The estimated activation energies are in line with infrared spectroscopy as well as hole dominated thermopower supported by heat capacity measurements. The essential features of the analysis include square root dependence of magnetoresistance with the magnetic field possibly due to the weak antilocalization effect as well as T3/2 dependence on mobility, extracted from a simplified two-band model fit in magnetoresistance curves.
- Subjects :
- 010302 applied physics
Materials science
Magnetoresistance
Condensed matter physics
General Physics and Astronomy
02 engineering and technology
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
021001 nanoscience & nanotechnology
Thermal conduction
Polaron
01 natural sciences
Heat capacity
Magnetic field
Seebeck coefficient
0103 physical sciences
Thermal
Condensed Matter::Strongly Correlated Electrons
Crystallite
0210 nano-technology
Subjects
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 127
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........1f40ff9092ea15f8697c3dccf1271549
- Full Text :
- https://doi.org/10.1063/1.5131556