attoTMS
expert transport measurement solution
Integrated software control of all parameters
fully automate complex measurements
in-situ eucentric two-axes sample rotation
turn single solenoid into strong 3D vector magnet
Nanonis TrameaTM fast multi-channel electronics
replace a full rack of electronics with 1 device
Magneto-transport measurements are mostly conducted at variable temperatures and in high magnetic fields; often requiring an arbitrary orientation of the sample in the external field. So far, such measurements have proven to be somewhat cumbersome: expensive vector magnets yielding only limited 3D field strengths, high running costs due to liquid helium, as well as time-consuming software integration of various 3rd party instruments. Thanks to a cooperation between SPECS Zurich and attocube systems, a new user-friendly platform has been developed, which allows for the exploration of a very large phase space at cryogenic temperatures and high magnetic fields. The software integration of our dry magnet cryostat attoDRY2100, a 3D sample rotator (atto3DR) and a powerful measurement electronic (Nanonis Tramea™) combines flexibility & automation of measurement routines with unprecedented speed and signal quality.
The Nanonis Tramea™ includes up to 48 analog inputs and outputs, up to 8 lock-in modules, oscilloscopes and spectrum analyzers, a multi-functional user interface as well as several programming interfaces incl. realtime scripting. Furthermore, the software integrates the automatic control of temperature (1.65 .. 300 K) and magnetic field (9T or more) of the dry cryostat attoDRY2100, as well as an arbitrary orientation between sample surface and magnetic field direction given by the 3D sample rotator atto3DR. Hence, generic n-dimensional sweeps of arbitrary parameters combined with data acquisition are easily possible with only one electronic device.
atto3DR
3D sample rotator
- rotate your sample – not the magnet!
- full magnetic field (e.g. 9 T) in 3D – stronger than any vector magnet!
- 20 pin chip carrier for fast sample exchange
attoDRY2100
variable temperature magnet system
- temperature range: 1.65 .. 300 K
- cryogen-free, fully automated T & B control
- full field @ 300 K & field cooling possible
Nanonis TrameaTM
multi purpose high speed digital electronics
- 8 .. 48 analog outputs (DC, lock-ins, AWGs,...)
- 8 .. 24 analog inputs (multimeters, lock-ins, digitizers, oscilloscopes, spectrum analyzers,...)
- no physical re-wiring required – switch between wiring schemes digitally
Specifications
| General Specifications | |
|---|---|
| type of instrument | transport measurement insert for use with attoDRY cryostats with integrated atto3DR double rotator module |
| sensor head specifics | 20 pin chip carrier based sample holder mounted on 2 combined rotators with eucentric rotation for 3D angle-dependent transport measurements based on single solenoid magnet |
| included hardware & software | transport measurement insert for attoDRY, 2 break-out boxes, atto3DR, ASH/CC/20 chip carrier sample holder, ANC350/3/RES piezo controller, Nanonis Tramea TRC real-time controller, |
| TSC signal conversion interface, LD5-1 single lock-in generator, LD5-MF multidemodulator and multi-input option, software license for Tramea, attoCONTROL electronics rack, 19“ rack PC incl. 27“ screen | |
| Nanonis Tramea control electronics | |
| base configuration | 1x TRCe real-time controller, 1x TSC signal conversion interface and Nanonis V5e software |
| analog inputs | 8 low-noise 18-bit analog inputs, differential BNC connectors, +/- 10V input range |
| analog input bandwidth | DC – 100 kHz (-3 dB), 5th-order Butterworth low-pass filter |
| Input noise density | < 150 nV/vHz @ 10 kHz, < 650 nV/vHz @ 10 Hz |
| analog outputs | 8 high precision and low noise 20-bit analog outputs (22-bit with hrDAC), differential BNC connectors, +/- 10V output range |
| analog output bandwidth | DC – 40 kHz (-3 dB), 5th – order Butterworth low-pass filter |
| output noise density | < 25 nV/vHz @ 100 Hz, < 75 nV/vHz @ 1 Hz |
| software upgrade incl. | LD5-1 single lock-in generator, LD5-MF multidemodulator and multi-input option |
| attocube modules for Tramea | integrated control of temperature & magnetic field of an attoDRY2100 and of the two rotator axes of the atto3DR from within the Tramea software |
| additional information on Tramea specifications | see Nanonis Tramea detailed specification sheet (or contact attocube) |
| Modes of Operation | |
| general configuration | full flexibility (multi-terminal, 4-probe, 2-probe) via generic analog in- and outputs, software configurable, up to 24 input, and up to 48 output channels measured simultaneously |
| Sample Positioning | |
| total travel range | full 3D sphere via ±90° for both closed loop rotators (reserve: ±10°) |
| step size | approx. 1 m° @ 300 K, 0.5 m° @ 4 K |
| fine scan range | 40 m° @ 300 K, 6 m° @ 4 K (scan resolution: µ°) |
| sensor resolution | approx. 6 m° |
| repeatability | approx. 50 m° |
| linearity | approx. 1% |
| sample holder | ASH/CC/20 fits 20 pin LCCC, connected to 20 wires as twisted pairs |
| Suitable Operating Conditions | |
| temperature range | 1.5 K..300 K (dependent on cryostat) |
| magnetic field range | 0..15 T+ (dependent on magnet) |
| operating pressure | designed for He exchange gas |
| Suitable Cooling Systems | |
| titanium housing diameter | 48 mm |
| compatible cryostats | attoDRY2100 |
| bore size requirement | designed for a 2" (50.8 mm) cryostat/magnet bore |
| Options and Upgrades | |
| TSC add-on(s) | 8 additional analog in- and outputs per TSC; maximum of 3 TSCs, resulting in 24 outputs and 24 inputs together with base configuration |
| TSO add-on(s) | 16 additional analog outputs per TSO; maximum of 2 TSOs, resulting in 50 outputs and 8 inputs together with base configuration |
| Nanonis Tramea software upgrades | large range of software upgrades available: multi-channel lock-ins, HR oscilloscope and FFT, programming interface, scripting module, generic PI controller, function generator |
| signal-amplifiers upgrade | several different low-noise, switchable gain amplifiers, fully integrated in the attoTMS software as well as in the hardware with power and data cable for remote control |
| Femto DDPCA-300 | trans-impedance amplifier, 0.4 fA peak-to-peak noise, switchable gain 1e4 .. 1e13 V/A, bandwidth up to 400 Hz, cable to Tramea included |
| Femto DLPCA-200 | trans-impedance amplifier, switchable gain 1e3 .. 1e11 V/A, bandwidth DC/1 Hz ... 500 kHz, cable to Tramea included |
| Femto DLPVA-100 | voltage amplifier, switchable gain 20/40/60/80 dB, bandwidth DC .. 100 kHz, switchable to 1 kHz, 5.5 nV/vHz input noise, cable to Tramea included |
| Nanonis MCVA5 | differential multichannel preamplifier with 4 independent channels, Gain of 1/10/100/1000, 500 kHz bandwidth, cable to Tramea included |
| Keysight SMU B2912A | precision Source/Measure Unit, supports two-channel configuration, minimum source resolution 10 fA/100 nV, minimum measurement resolution 10 fA/100 nV, maximum output 210 V |
