| Local Contact |
Alix MCCOLLAM, Steffen WIEDMANN, Uli ZEITLER |
| Field range |
0 ... 38 T |
| Angle range |
~180 deg |
| Temperature range |
0.3 ... 30 K (3He system)
1.4 … 380 K (flow cryostat)
0.05 ... 4 K (dilution refrigerator, on request)
(Upper temperature limit depends on signal strength)
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| Configurations (see Figure) |
a) rotate field from parallel to perpendicular orientation
b) rotate field inside sample plane (azimuthal rotation)
c) fixed angle (ϑ=0°), sample perpendicular to field
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| Sample size |
i) sample in LCC-20 chip carrier
< 5x5 mm2 (inside LCC-20 dye);
ii) sample directly mounted on platform
< 10x10 mm2;
< 1 mm thickness (typical) |
| Sample resistance |
μΩ … MΩ (AC using lock-in amplifiers)
< 1 GΩ (DC, typically, using nanovoltmeters) |
| Contact configuration |
up to 20 contacts for current, voltage and gating |
| Bias current |
< 1 nA …10 mA (typical, depending on sample impedance) |
| Gate voltage |
±100 V (typical) |
| Typical experiment |
R(B,T,ϑ,Vg,...)
sweep rates (typical) 0.5 … 5 T/min
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| Examples |
Ising superconductivity: PNAS 115, 3551 (2018);Science 350, 1353 (2015); Fractal states in graphene: PNAS 115, 5135 (2018);Quantum Oscillations in ZrSiS: Nature Physics (2017), 178-183; FQHE and Wigner solid in ZnO: arXiv:1707.08406 [cond-mat.mes-hall] ; QHE in InSe: Nat. Nanotechnol. 12, 223 (2017) |
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