High Precision, Low Excitation Capactiance Measurement Methods from 10 mK- to Room-Temperature
arXiv:2202.04442 · doi:10.1063/5.0087772
Abstract
Capacitance measurement is a useful technique in studying quantum devices, as it directly probes the local particle charging properties, i.e. the system compressibility. Here we report one approach which can measure capacitance from mK to room temperature with excellent accuracy. Our experiments show that such a high-precision technique is able to reveal delicate and essential properties of high-mobility two-dimensional electron systems.
References in corpus (8)
- Robust fractional quantum Hall states and continuous quantum phase transitions in a half-filled bilayer graphene Landau level
- Electronic Compressibility of Magic-Angle Graphene Superlattices
- Direct measurement of discrete valley and orbital quantum numbers in a multicomponent quantum Hall system
- Emergent Dirac gullies and gully-symmetry breaking quantum Hall states in ABA trilayer graphene
- Probing the Melting of a Two-dimensional Quantum Wigner Crystal via its Screening Efficiency
- An integrated capacitance bridge for high-resolution, wide temperature range quantum capacitance measurements
- Determination of -factor in InAs two-dimensional electron system by capacitance spectroscopy
- Integrated impedance bridge for absolute capacitance measurements at cryogenic temperatures and finite magnetic fields