Electrical Transport — Coexistence of ferromagnetism and metallic conductivity in a molecule-based layered compound

Measurement evidence

Electrical Transport

Coexistence of ferromagnetism and metallic conductivity in a molecule-based layered compound · Coronado E., Galan-Mascaros J.R., Gomez-Garcia C.J. et al. · Nature · 2000 · 447-449

2 measurement groups · 11 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

Standard four-contact d.c. resistance measurement

Thin shiny brown plate-like single crystals of [BEDT-TTF]3[MnCr(C2O4)3] · Single Crystal

Plate-like single crystals measured from 300 to 2 K; current flowed in the plane of the layers.

Temperature
2-300
Geometry
Four-contact in-plane transport on plate-like single crystals.
Context
Pristine target mixed-metal layered salt.
Measurement source
main p.3, article p.449 · Transport properties · Fig. 3
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Metallic temperature dependenceResistance exhibits metallic behaviour over 300-2 K.Text
Qualitative
main p.3, article p.449 · Transport properties · Fig. 3
Superconductivity observation windowNo superconductivity established above 2 K.lower measurement limitText
Qualitative
main p.3, article p.449 · Concluding paragraph
Resistivity decrease on cooling from 300 to 2 Kfactor of about 15-25sample-quality-dependent rangeText
Range
main p.3, article p.449 · Transport properties · Fig. 3
Approximate resistivity near 2 K from Fig. 3about 0.00025 Ohm cm near 2 Kvisual estimate from y axisFigure Axis
Approximate
main p.2, article p.448 · Figure · Fig. 3
Approximate resistivity at 300 K from Fig. 3about 0.0048 Ohm cm at 300 Kvisual estimate from y axisFigure Axis
Approximate
main p.2, article p.448 · Figure · Fig. 3
Room-temperature in-plane conductivityMarked as a best value within this paperas high as approximately 250 S cm^-1approximately/as high asText
Approximate
main p.3, article p.449 · Transport properties · Fig. 3

Low-temperature magnetoresistance during four-contact d.c. transport

Thin shiny brown plate-like single crystals of [BEDT-TTF]3[MnCr(C2O4)3] · Single Crystal

Magnetic field up to 5 T applied perpendicular or parallel to the layers; inset plots perpendicular-field data to about 15 K.

Temperature
2-15
Geometry
Four-contact in-plane transport with magnetic field orientation varied relative to layers.
Context
Pristine target mixed-metal layered salt.
Measurement source
main pp.2-3, article pp.448-449 · Transport properties · Fig. 3 inset
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Maximum applied magnetic field in magnetoresistance testsup to 5 TText
Exact Reported
main p.3, article p.449 · Transport properties
Negative magnetoresistance below about 10 K for perpendicular fieldnegative magnetoresistance below about 10 K with field perpendicular to layersaboutText
Approximate
main p.3, article p.449 · Transport properties · Fig. 3 inset
Field-parallel resistance responseResistance practically field-independent when the field is applied parallel to the layers.Text
Qualitative
main p.3, article p.449 · Transport properties
Approximate 2 K resistivity at H = 0 from Fig. 3 insetrho x 10^4 about 2.70, equivalent to about 0.000270 Ohm cmvisual estimate from inset; rho values multiplied by 10^4Figure Axis
Approximate
main p.2, article p.448 · Figure · Fig. 3 inset
Approximate 2 K resistivity at H = 1.5 T perpendicular from Fig. 3 insetrho x 10^4 about 2.65, equivalent to about 0.000265 Ohm cmvisual estimate from inset; rho values multiplied by 10^4Figure Axis
Approximate
main p.2, article p.448 · Figure · Fig. 3 inset