Imperial College London

ProfessorNeilAlford

Central FacultyOffice of the Provost

Associate Provost (Academic Planning)
 
 
 
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Contact

 

+44 (0)20 7594 6724n.alford

 
 
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Assistant

 

Miss Catherine Graham +44 (0)20 7594 3330

 
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Location

 

2..05 (in RSM) or 3.09 (in the Faculty Building)Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Miklich:1994:10.1063/1.111251,
author = {Miklich, AH and Koelle, D and Shaw, TJ and Ludwig, F and Nemeth, DT and Dantsker, E and Clarke, J and Alford, NM and Button, TW and Colclough, MS},
doi = {10.1063/1.111251},
journal = {Applied Physics Letters},
pages = {3494--3496},
title = {Low-frequency excess noise in YBa<inf>2</inf>Cu<inf>3</inf>O<inf>7-x</inf> dc superconducting quantum interference devices cooled in static magnetic fields},
url = {http://dx.doi.org/10.1063/1.111251},
volume = {64},
year = {1994}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - We have investigated the performance of YBa2Cu3O 7-x dc superconducting quantum interference devices (SQUIDs) cooled in static magnetic fields, B0, of 0.01-1 mT. For fields less than the earth's ambient field, about 0.05 mT, the white noise of the devices at 77 K is not materially affected. However, at a frequency f of 1 Hz the spectral density of the 1/f noise, SΦ (1 Hz), at 0.05 mT increases by an order of magnitude over that for zero field. Furthermore, SΦ (1 Hz) scales approximately linearly with B0, suggesting strongly that the noise originates in the motion of vortices in the YBCO film. This increase in noise is likely to be an issue for SQUIDs operated in the earth's field.
AU - Miklich,AH
AU - Koelle,D
AU - Shaw,TJ
AU - Ludwig,F
AU - Nemeth,DT
AU - Dantsker,E
AU - Clarke,J
AU - Alford,NM
AU - Button,TW
AU - Colclough,MS
DO - 10.1063/1.111251
EP - 3496
PY - 1994///
SN - 0003-6951
SP - 3494
TI - Low-frequency excess noise in YBa<inf>2</inf>Cu<inf>3</inf>O<inf>7-x</inf> dc superconducting quantum interference devices cooled in static magnetic fields
T2 - Applied Physics Letters
UR - http://dx.doi.org/10.1063/1.111251
VL - 64
ER -