Nanonis Tramea MEASUREMENTQuantum transport measurement system (QTMS) A perfect pairing - Oxford Instruments' low and ultra low temperature systems and Nanonis Tramea™ Key features • Powerful, ultrafast measurement solution • Excellent signal performance • S uperior and customisable user interface • Automated signal aquisition and data processing OXFORD INSTRUMENTS SPECS' The Business of Science'

Nanonis Tramea™ Introduction Nanonis Tramea provides a new way of working that delivers precise, fast and high-quality measurements. At the same time, the handling of applications is superior and more versatile in performance compared to commonly used laboratory equipment. Nanonis Tramea is the leading example of efficiency gain by utilising the maximum capacity of controlling hardware, which provides high sampling data rates suitable for time-resolved measurements, producing volumes of data. This empowers pioneering scientists to benefit from Nanonis Tramea for scientific research challenges...

Quantum transport measurement system Fully integrated digital system All analog signals are converted immediately into the digital domain where all signal processing is performed. This ensures no interference by external noise or crosstalk is possible. The free configurable inputs and outputs (for signal generation, detection and feedback) can be controlled simultaneously by software that is optimal for many applications like quantum transport measurements etc. There is a maximum of 24 channels to be acquired simultaneously and independently. They can be chosen from a total number of 48 channels....

Nanonis Tramea™ Flexible, customisable and expandable In a rapidly changing research world the ability to customise experiments is of the highest importance, Nanonis Tramea comes with a built-in interface which allows for control of the instruments’ basic functions using any programming environment. For users requiring more functionality and higher speeds, a full-featured LabVIEW-based programming interface or scripting module are available as add-on modules. Due to the modularity and flexibility of the hardware and software architecture of Nanonis Tramea, upgrades with standardised add-on modules...

Quantum transport measurement system Applications Conductance of a quantum point contact (QPC) This application for quantum transport measurements shows the conductance of a quantum point contact (QPC) as a function of the gate and bias voltage at low temperatures (2 K). The specimen is a top-gate defined QPC of 800 nm width consisting of a GaAs/AlGaAs heterostructure (n=1x1011 cm-2, µ=4x106 cm2/(Vs)). The conductance was differentiated mathematically using the Nanonis Tramea software. The presented measurement is performed to demonstrate Figure 1: Standard set-up 500,000 measurement points (11...

Nanonis Tramea™ Hardware design modules The core of the Nanonis Tramea is its real-time controller The electronic mainboard of the TSC is a showcase for the best available active digital and analog electronic components on the market. That is the consequence of meticulously chosen components down to each single resistor ensuring high quality and reliable performance. TRC. By using the latest field programmable gate array (FPGA) and central processing unit (CPU) technology the TRC provides enough speed, connectivity and processing power for the most demanding tasks. Both FPGA and real-time modules...

Quantum transport measurement system Hardware performance Adaptive oversampling for high resolution data acquisition High resolution AD/DA conversion A tailored input stage allows the acquisition of even the Nanonis Tramea uses the fastest 20 bit, 1 ppm DA- weakest analog signals while using the full available converters available on the market. In the past a similar input range of ±10 V. Conventional instruments would performance on multiple outputs would have been impossible require gain switching due to their limited dynamic range. to realise or would have required a rack full of single-channel...

Nanonis Tramea™ Lowest drift with temperature stabilisation Lowest 1/f noise outputs Transport measurements can last very long and it is of utmost 1/f noise cannot be eliminated and becomes an issue for importance to keep all signals applied to the sample as experiments requiring stable signals. The outputs of the TSC stable as possible during this time. For this reason the TSC have been designed to bring the noise level much below 750 is equipped with a tailored temperature-stabilised and high nV peak-peak (0.1 – 10 Hz, ±10 V output range). In other precision voltage reference. This reference...

Quantum transport measurement system Lock-in performance (optional) Extreme dynamic range Advanced filtering for high dynamic reserve Nanonis Tramea signal conversion (TSC) module offers Precise determination of small signals in noisy environments exceptional DC performance. Fast sampling outputs and requires effective filtering. The lock-in modules of Nanonis inputs allow for transferring this performance into the AC Tramea provide all required tools for best signal recovery domain without compromise. Any of the precision DC capabilities. Each of the eight dual-phase demodulators outputs can...

Nanonis Tramea™ Software performance Signal handling and signal safety For immediate and interpretable quantitative results, signals Most experiments have been and will be extended over time in the laboratory. This requires the software to handle a collection of heterogeneous instrument control interfaces. To simplify the ease of use, the Nanonis Tramea software provides a superior “one fits all framework” with embedded functionality. The software is expandable for customized experiments using either the existing add-on modules or own user-programmed functions. Advanced user interface Employing...

Quantum transport measurement system Everything under control Scripting module All signals can be monitored live with versatile display For experiments where exact timing and fast execution are crucial options. The Fast Fourier Transform (FFT) spectrum the scripting module becomes the ideal tool for customisation. analyser, various signal charts, oscilloscopes or signal Those scripts are executed on the real-time system at 20000 history continuously show the actual status and response times per second in a time deterministic manner. That reduces the of the sample. Such fully digital and integrated...