VTT QUANTUM-hall setup

Timo Varpula; Heikki Seppä

doi:10.1109/CPEM.1990.110056

VTT QUANTUM-hall setup

Timo Varpula, Heikki Seppä

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

1 Citation (Scopus)

Abstract

The authors present a compact setup for quantum Hall measurements consisting of an overlapped-tube cryogenic current comparator, where the imbalance is detected with a sensitive DC-SQUID (superconducting quantum interference device) magnetometer, and a small superconducting magnet system operated in a standard liquid-helium storage dewar. The system also incorporates PC-controlled electronics, which facilitates automatic measurements. The setup has been developed for a small-scale national standards laboratory where resistance calibrations at an uncertainty level of 10/sup -8/ are performed. A block diagram of the electronics of the measurement setup is shown along with a 1.5 K insert that includes a complete superconducting magnet system and the quantum-Hall probe.

Original language	English
Title of host publication	CPEM'90 Digest
Subtitle of host publication	Conference on Precision Electromagnetic Measurements
Editors	Gary R. Hanes
Place of Publication	New York
Publisher	IEEE Institute of Electrical and Electronic Engineers
Pages	352-353
DOIs	https://doi.org/10.1109/CPEM.1990.110056
Publication status	Published - 1990
MoE publication type	A4 Article in a conference publication
Event	CPEM'90: Conference on Precision Electromagnetic Measurements - Ottawa, Canada Duration: 11 Jul 1990 → 14 Jul 1990

Conference

Conference	CPEM'90
Country/Territory	Canada
City	Ottawa
Period	11/07/90 → 14/07/90

Access to Document

10.1109/CPEM.1990.110056

Cite this

@inproceedings{3d85e77e680844bd97d6d6d28fb93142,

title = "VTT QUANTUM-hall setup",

abstract = "The authors present a compact setup for quantum Hall measurements consisting of an overlapped-tube cryogenic current comparator, where the imbalance is detected with a sensitive DC-SQUID (superconducting quantum interference device) magnetometer, and a small superconducting magnet system operated in a standard liquid-helium storage dewar. The system also incorporates PC-controlled electronics, which facilitates automatic measurements. The setup has been developed for a small-scale national standards laboratory where resistance calibrations at an uncertainty level of 10/sup -8/ are performed. A block diagram of the electronics of the measurement setup is shown along with a 1.5 K insert that includes a complete superconducting magnet system and the quantum-Hall probe.",

author = "Timo Varpula and Heikki Sepp{\"a}",

note = "Project code: S{\"A}H1205; CPEM'90 : Conference on Precision Electromagnetic Measurements ; Conference date: 11-07-1990 Through 14-07-1990",

year = "1990",

doi = "10.1109/CPEM.1990.110056",

language = "English",

pages = "352--353",

editor = "Hanes, {Gary R.}",

booktitle = "CPEM'90 Digest",

publisher = "IEEE Institute of Electrical and Electronic Engineers",

address = "United States",

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TY - GEN

T1 - VTT QUANTUM-hall setup

AU - Varpula, Timo

AU - Seppä, Heikki

N1 - Project code: SÄH1205

PY - 1990

Y1 - 1990

N2 - The authors present a compact setup for quantum Hall measurements consisting of an overlapped-tube cryogenic current comparator, where the imbalance is detected with a sensitive DC-SQUID (superconducting quantum interference device) magnetometer, and a small superconducting magnet system operated in a standard liquid-helium storage dewar. The system also incorporates PC-controlled electronics, which facilitates automatic measurements. The setup has been developed for a small-scale national standards laboratory where resistance calibrations at an uncertainty level of 10/sup -8/ are performed. A block diagram of the electronics of the measurement setup is shown along with a 1.5 K insert that includes a complete superconducting magnet system and the quantum-Hall probe.

AB - The authors present a compact setup for quantum Hall measurements consisting of an overlapped-tube cryogenic current comparator, where the imbalance is detected with a sensitive DC-SQUID (superconducting quantum interference device) magnetometer, and a small superconducting magnet system operated in a standard liquid-helium storage dewar. The system also incorporates PC-controlled electronics, which facilitates automatic measurements. The setup has been developed for a small-scale national standards laboratory where resistance calibrations at an uncertainty level of 10/sup -8/ are performed. A block diagram of the electronics of the measurement setup is shown along with a 1.5 K insert that includes a complete superconducting magnet system and the quantum-Hall probe.

U2 - 10.1109/CPEM.1990.110056

DO - 10.1109/CPEM.1990.110056

M3 - Conference article in proceedings

SP - 352

EP - 353

BT - CPEM'90 Digest

A2 - Hanes, Gary R.

PB - IEEE Institute of Electrical and Electronic Engineers

CY - New York

T2 - CPEM'90

Y2 - 11 July 1990 through 14 July 1990

ER -

VTT QUANTUM-hall setup

Abstract

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