Quasi-linear magnetoresistance and the violation of Kohler’s rule in the quasi-one-dimensional Ta₄Pd₃Te₁₆superconductor

Abstract

We report on the quasi-linear in field intrachain magnetoresistance in the normal state of a quasi-one-dimensional superconductor Ta 4 Pd 3 Te 16 (T c ∼4.6 K). Both the longitudinal and transverse in-chain magnetoresistance shows a power-law dependence, ∆ρ∝B α , with the exponent α close to 1 over a wide temperature and field range. The magnetoresistance shows no sign of saturation up to 50 tesla studied. The linear magnetoresistance observed in Ta 4 Pd 3 Te 16 is found to be overall inconsistent with the interpretations based on the Dirac fermions in the quantum limit, charge conductivity fluctuations as well as quantum electron-electron interference. Moreover, it is observed that the Kohler's rule, regardless of the field orientations, is violated in its normal state. This result suggests the loss of charge carriers in the normal state of this chain-containing compound, due presumably to the charge-density-wave fluctuations.

Pressure induced change in the electronic state of Ta4Pd3Te16

“…We would argue that this conclusion is in agreement with the ambient pressure experimental data on magnetoresistivity in Ref. 8. Whereas the Kohler's rule is violated and the functional dependence of ∆ρ/ρ 0 (H) changes with temperature, 8 this evolution is slow and continuous, with no anomaly at or around 20 K, the temperature of suggested CDW transition.…”

“…5. Whereas the bulk nature of superconductivity and moderate (≤ 6) anisotropy of the upper critical field (consistent with anisotropic three-dimensional electronic properties of the compound) was confirmed by several groups [6][7][8][9] , the nature of superconductivity is still under debate. Thermal conductivity measurements 6 suggested nodal superconductivity, whereas detailed analysis of the specific heat capacity 7 and scanning tunneling spectroscopy studies 10,11 described superconductivity in Ta 4 Pd 3 Te 16 as multi-band, with anisotropic superconducting gaps, and NMR/NQR data 12 characterized it as s-wave, nodeless, superconductivity.…”

“…10(a)), in agreement with the ambient pressure report. 8 The pressure effect on ∆ρ/ρ 0 = (ρ H − ρ H=0 )/ρ H=0 is significant, although the functional dependence of the ∆ρ/ρ 0 (H) appears to be similar at different pressures ( Fig. 10(b)).…”

Synthesis, physical properties, and band structure of the layered bismuthidePtBi2

“…Interestingly, this rule, albeit its semiclassical origin, was found to be well obeyed in a large number of metals from conventional metals to some quantum matters. These involve the metals with two types of carriers, 17 the pseudogap phase of the underdoped cuprates, 22 quasi-one-dimensional metals 23,24 as well as some topological semimetals. 25 We examined this rule in PtBi 2 (Fig.…”

Experimental and theoretical study of the correlated compound YbCdSn: Evidence for large magnetoresistance and mass enhancement

“…4(b), the MR data are plotted as a function of (B/ρ 0 ) but the MR data at various temperatures are not merging into a single curve which indicates a clear violation of Kohler's scaling. Violation of Kohler's scaling can be observed due to various reasons including the existence of multiple carriers and different scattering rates of various carriers [61][62][63][64].…”