Other — Quantum spin liquid state in a two-dimensional semiconductive metal−organic framework

5 measurement groups · 15 results

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

Cu3(HHTP)2-silver pellet for heat capacity · Pellet

2-20 K PPMS; 0.065-2 K dilution refrigerator calorimeter; silver-particle pellet calibration.

Temperature: 0.065-20
Geometry: Silver-mixed pressed pellet
Context: MOF-silver composite measurement pellet; silver heat capacity calibrated out
Measurement source: SI p.S3 · Details of physical property measurements · Figure 3; Figure S9; Figure S11

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Low-temperature heat-capacity alpha coefficient	Cp = 1.282 T^0.52	—	—	Figure Axis Exact Reported	main p.3 · Results · Figure 3b
Cubic heat-capacity coefficient beta	beta = 0.00146 J K-4 Cu1-mol-1	—	—	Figure Axis Exact Reported	main p.3 · Results · Figure 3a
Linear heat-capacity coefficient gamma	gamma = 0.2896 J K-2 Cu1-mol-1	—	—	Figure Axis Exact Reported	main p.3 · Results · Figure 3a
Low-temperature spin heat-capacity exponent epsilon	epsilon = 0.52	—	—	Text Exact Reported	main p.3 · Results · Figure 3b
No heat-capacity anomaly over measured range	No sharp peak or anomaly observed from 0.065 K to 20 K	—	—	Caption Qualitative	SI p.S12 · S10 Specific heat capacity · Figure S9
High-temperature spin entropy fraction of R ln 2	around 70%	—	around	Text Approximate	main p.3 · Results · Figure 4b

Cu3(HHTP)2-silver pellet for ultralow-temperature susceptibility · Pellet

2-300 K ZFC/FC at 1000 Oe; 0.038-4 K AC susceptibility with 175 Hz AC field generated by SR830 lock-in amplifier; real part normalised to MPMS data.

Temperature: 0.038-300
Geometry: Silver-mixed pressed pellet in SQUID/dilution refrigerator
Context: MOF-silver composite measurement pellet; silver contribution deducted
Measurement source: SI p.S2-S3 · Details of physical property measurements · Figure 2; Figure S7; Figure S8

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Curie constant per mole of Cu(II)Marked as a best value within this paper	0.380 emu K mol-1	—	—	Text Exact Reported	main p.2 · Results · Figure 2; Figure S7
Exchange coupling constant J/kBMarked as a best value within this paper	J/kB = 2 K	—	—	Text Rounded Reported	main p.2 · Results · Figure S8
Frustration factor	f > 90	—	>	Text Approximate	main p.3 · Results
Low-temperature susceptibility power-law exponent	chi proportional to T^-0.31	—	—	Text Exact Reported	main p.3 · Results · Figure 2b inset
No long-range magnetic ordering down toMarked as a best value within this paper	38 mK	0.038 K	—	Text Exact Reported	main p.2 · Results · Figure 2b
Weiss constant thetaMarked as a best value within this paper	-3.4 K	—	—	Text Exact Reported	main p.2 · Results · Figure 2; Figure S7

As-prepared Cu3(HHTP)2 powder · Powder

As-prepared and activated Cu3(HHTP)2 compared up to 500 deg C in plotted data.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Guest molecule weight percentage in as-prepared Cu3(HHTP)2	20%	—	estimated	Caption Approximate	SI p.S9 · S7 TGA · Figure S6

Cu3(HHTP)2-silver pellet for heat capacity · Pellet

Temperature-variable dimensionless Wilson ratio plotted for T < 2 K.

Temperature: 0-2
Geometry: Calculated from low-temperature physical-property measurements
Context: Cu3(HHTP)2 low-temperature magnetic/heat-capacity data
Measurement source: SI p.S13 · S11 Temperature-dependent dynamic Wilson ratio · Figure S10

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Wilson ratio upper bound	6-10	—	roughly	Caption Range	SI p.S13 · S11 Wilson ratio · Figure S10
Wilson ratio lower bound	6-10	—	roughly	Caption Range	SI p.S13 · S11 Wilson ratio · Figure S10

Zn3(HHTP)2 heat-capacity control sample · Pellet

Compared with Cu3(HHTP)2 to estimate the lattice heat capacity contribution.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source