000809116 001__ 809116
000809116 005__ 20240619091207.0
000809116 0247_ $$2doi$$a10.1063/1.4941665
000809116 0247_ $$2ISSN$$a0003-6951
000809116 0247_ $$2ISSN$$a1077-3118
000809116 0247_ $$2WOS$$aWOS:000373056300029
000809116 0247_ $$2Handle$$a2128/17304
000809116 037__ $$aFZJ-2016-02506
000809116 082__ $$a530
000809116 1001_ $$0P:(DE-Juel1)166229$$aHong, Tao$$b0
000809116 245__ $$aFlux modulation scheme for direct current SQUID readout revisited
000809116 260__ $$aMelville, NY$$bAmerican Inst. of Physics$$c2016
000809116 3367_ $$2DRIVER$$aarticle
000809116 3367_ $$2DataCite$$aOutput Types/Journal article
000809116 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1467118860_5432
000809116 3367_ $$2BibTeX$$aARTICLE
000809116 3367_ $$2ORCID$$aJOURNAL_ARTICLE
000809116 3367_ $$00$$2EndNote$$aJournal Article
000809116 520__ $$aThe flux modulation scheme (FMS) is the standard readout technique of dc SQUIDs, where a step-up transformer links the SQUID to the preamplifier. The transformer's primary winding shunts the SQUID via a large capacitor while the secondary winding connects it to the preamplifier. A modulation flux having a frequency of typically 100 kHz generates an ac voltage across the SQUID, stepped up by the transformer. The SQUID with FMS is customarily operated in the current bias mode, because a constant dc bias current flows only through the SQUID due to the capacitor isolation. With FMS, however, the transformer ac shunts the SQUID so that in reality the operating mode is neither purely current-biased nor voltage-biased but rather nominal current-biased or “mixed biased.” Our objective is to experimentally investigate the consequences of ac shunting of the dc SQUID in FMS and the transformer's transfer characteristics. For different shunt values we measure the change in the SQUID bias current due to the ac shunt using another SQUID in the two-stage readout scheme, and simultaneously monitor the SQUID output voltage signal. We then explain our measurements by a simplified graphic analysis of SQUID intrinsic current-voltage (I–V) characteristics. Since the total current flowing through the SQUID is not constant due to the shunting effect of the transformer, the amplitude of SQUID flux-to-voltage characteristics V(Φ) is less as compared to the direct readout scheme (DRS). Furthermore, we analyze and compare V(Φ) obtained by DRS and FMS. We show that in FMS, the transfer characteristics of the SQUID circuit also depend on the isolation capacitance and the dynamic resistance of the SQUID.
000809116 536__ $$0G:(DE-HGF)POF3-523$$a523 - Controlling Configuration-Based Phenomena (POF3-523)$$cPOF3-523$$fPOF III$$x0
000809116 588__ $$aDataset connected to CrossRef
000809116 7001_ $$0P:(DE-HGF)0$$aWang, Hai$$b1
000809116 7001_ $$0P:(DE-Juel1)128754$$aZhang, Yi$$b2$$eCorresponding author
000809116 7001_ $$0P:(DE-Juel1)128697$$aKrause, Hans-Joachim$$b3
000809116 7001_ $$0P:(DE-Juel1)128664$$aBraginski, Alexander$$b4
000809116 7001_ $$0P:(DE-HGF)0$$aXie, Xiaoming$$b5
000809116 7001_ $$0P:(DE-Juel1)128713$$aOffenhäusser, Andreas$$b6
000809116 7001_ $$0P:(DE-HGF)0$$aJiang, Mianheng$$b7
000809116 773__ $$0PERI:(DE-600)1469436-0$$a10.1063/1.4941665$$gVol. 108, no. 6, p. 062601 -$$n6$$p062601 -$$tApplied physics letters$$v108$$x1077-3118$$y2016
000809116 8564_ $$uhttps://juser.fz-juelich.de/record/809116/files/1.4941665.pdf$$yOpenAccess
000809116 8564_ $$uhttps://juser.fz-juelich.de/record/809116/files/1.4941665.gif?subformat=icon$$xicon$$yOpenAccess
000809116 8564_ $$uhttps://juser.fz-juelich.de/record/809116/files/1.4941665.jpg?subformat=icon-180$$xicon-180$$yOpenAccess
000809116 8564_ $$uhttps://juser.fz-juelich.de/record/809116/files/1.4941665.jpg?subformat=icon-700$$xicon-700$$yOpenAccess
000809116 8564_ $$uhttps://juser.fz-juelich.de/record/809116/files/1.4941665.pdf?subformat=pdfa$$xpdfa$$yOpenAccess
000809116 8767_ $$92016-02-11$$d2016-02-11$$ePublication charges$$jZahlung erfolgt$$lKK: Mittermaier$$p057606APL$$zSubmission 2015
000809116 909CO $$ooai:juser.fz-juelich.de:809116$$pdnbdelivery$$popenCost$$pVDB$$pdriver$$pOpenAPC$$popen_access$$popenaire
000809116 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)166229$$aForschungszentrum Jülich$$b0$$kFZJ
000809116 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)128754$$aForschungszentrum Jülich$$b2$$kFZJ
000809116 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)128697$$aForschungszentrum Jülich$$b3$$kFZJ
000809116 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)128664$$aForschungszentrum Jülich$$b4$$kFZJ
000809116 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)128713$$aForschungszentrum Jülich$$b6$$kFZJ
000809116 9131_ $$0G:(DE-HGF)POF3-523$$1G:(DE-HGF)POF3-520$$2G:(DE-HGF)POF3-500$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bKey Technologies$$lFuture Information Technology - Fundamentals, Novel Concepts and Energy Efficiency (FIT)$$vControlling Configuration-Based Phenomena$$x0
000809116 9141_ $$y2016
000809116 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS
000809116 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR$$bAPPL PHYS LETT : 2014
000809116 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection
000809116 915__ $$0StatID:(DE-HGF)0110$$2StatID$$aWoS$$bScience Citation Index
000809116 915__ $$0StatID:(DE-HGF)0111$$2StatID$$aWoS$$bScience Citation Index Expanded
000809116 915__ $$0StatID:(DE-HGF)9900$$2StatID$$aIF < 5
000809116 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess
000809116 915__ $$0StatID:(DE-HGF)1150$$2StatID$$aDBCoverage$$bCurrent Contents - Physical, Chemical and Earth Sciences
000809116 915__ $$0StatID:(DE-HGF)0300$$2StatID$$aDBCoverage$$bMedline
000809116 915__ $$0StatID:(DE-HGF)0420$$2StatID$$aNationallizenz
000809116 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bThomson Reuters Master Journal List
000809116 920__ $$lyes
000809116 9201_ $$0I:(DE-Juel1)PGI-8-20110106$$kPGI-8$$lBioelektronik$$x0
000809116 9201_ $$0I:(DE-Juel1)ICS-8-20110106$$kICS-8$$lBioelektronik$$x1
000809116 9201_ $$0I:(DE-82)080009_20140620$$kJARA-FIT$$lJARA-FIT$$x2
000809116 9801_ $$aAPC
000809116 9801_ $$aFullTexts
000809116 980__ $$ajournal
000809116 980__ $$aVDB
000809116 980__ $$aUNRESTRICTED
000809116 980__ $$aI:(DE-Juel1)PGI-8-20110106
000809116 980__ $$aI:(DE-Juel1)ICS-8-20110106
000809116 980__ $$aI:(DE-82)080009_20140620
000809116 980__ $$aAPC
000809116 981__ $$aI:(DE-Juel1)IBI-3-20200312
000809116 981__ $$aI:(DE-Juel1)ICS-8-20110106