Electrical Transport — A Low-Symmetry Copper Benzenehexathiol Coordination Polymer with In-Plane Electrical Anisotropy

3 measurement groups · 13 results

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

Four-point-probe I-V and temperature-dependent single-crystal conductance

Electrical conductivity

Cu5BHT single-crystal six-electrode device · Single Crystal

Room-temperature I-V measured in N2; temperature-dependent 4pp measurements from 300 to 30 K under high vacuum (<10^-6 mbar) in a closed-cycle cryogenic probe station.

Temperature: 30-300
Atmosphere: N2 for room-temperature connection tests; high vacuum for temperature-dependent measurements
Geometry: six electrode-ECCP interfaces; current along (010), (110), and (1-10) crystal directions
Context: pristine Cu5BHT single-crystal device
Measurement source: p003 / SI page 3 · Single crystal device fabrication and electrical measurement · Figure 4; Figures S25-S26

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
low-temperature in-plane anisotropic factor	approximately 8.65 near 30 K	—	—	Visual Estimate Approximate	p030 / SI page 29 · Results and Discussion · Figure S26
room-temperature in-plane anisotropic factorMarked as a best value within this paper	~8	—	—	Text Approximate	p006 / article page 6 of 7 · In-Plane Electrical Anisotropy in Metallic Cu5BHT · Figures 4c, S26
room-temperature conductance along (010)Marked as a best value within this paper	~2.11 mS	0.00211 S	—	Text Approximate	p002 / article page 2 of 7 · Introduction · Figure 4c
room-temperature conductance along (110)	~0.25 mS	0.00025 S	—	Text Approximate	p002 / article page 2 of 7 · Introduction · Figure 4c
room-temperature conductance along (1-10)	~0.23 mS	0.00023 S	—	Text Approximate	p002 / article page 2 of 7 · Introduction · Figure 4c
single-crystal conductance trend on coolingMarked as a best value within this paper	monotonic increase in conductance along (010), (110), and (1-10) upon cooling	—	—	Text Qualitative	p006 / article page 6 of 7 · In-Plane Electrical Anisotropy in Metallic Cu5BHT · Figure 4c
four-point-probe I-V character	linear Ohmic I-V	—	—	Text Qualitative	p006 / article page 6 of 7 · In-Plane Electrical Anisotropy in Metallic Cu5BHT · Figure 4b

Two-probe temperature-dependent conductivity on single-crystal and polycrystal devices

Electrical conductivity

Cu5BHT two-probe single-crystal and polycrystal devices · Electrode

E-beam contacted devices; contact resistance included; plotted over approximately 30-300 K.

Temperature: approximately 30-300
Geometry: two-probe contacts to single-crystal and polycrystal Cu5BHT devices
Context: pristine Cu5BHT devices
Measurement source: p028 / SI page 27 · Results and Discussion · Figure S24

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
two-probe polycrystal conductivity at about 300 K	approximately 0.35 S/m at 300 K	0.0035 S cm^-1	—	Visual Estimate Approximate	p028 / SI page 27 · Results and Discussion · Figure S24c
two-probe single-crystal conductivity at about 300 K	approximately 1 S/m at 300 K	0.01 S cm^-1	—	Visual Estimate Approximate	p028 / SI page 27 · Results and Discussion · Figure S24c

Variable-temperature DC conductivity by van der Pauw method

Electrical conductivity

Cu5BHT van der Pauw thick film · Thin Film

Cu5BHT thick film measured from 310 to 5 K; sheet resistance converted to bulk resistivity using thickness.

Temperature: 5-310
Geometry: van der Pauw four-contact film geometry; film thickness 200 nm
Context: pristine Cu5BHT film
Measurement source: p005 / article page 5 of 7 · In-Plane Electrical Anisotropy in Metallic Cu5BHT · Figure S23

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Arrhenius activation energy	Ea = 15.6 meV	0.0156 eV	—	Text Exact Reported	p005 / article page 5 of 7 · In-Plane Electrical Anisotropy in Metallic Cu5BHT · Figure S23c
van der Pauw film conductivity at 310 K	275 S cm^-1	27500 S m^-1	—	Text Exact Reported	p005 / article page 5 of 7 · In-Plane Electrical Anisotropy in Metallic Cu5BHT · Figure S23
van der Pauw film conductivity at 5 K	113 S cm^-1	11300 S m^-1	—	Text Exact Reported	p005 / article page 5 of 7 · In-Plane Electrical Anisotropy in Metallic Cu5BHT · Figure S23
T^-1/4 inset fit activation-energy label	Ea = 0.08 meV	0.00008 eV	—	Figure Axis Exact Reported	p027 / SI page 26 · Results and Discussion · Figure S23c inset