Gradiometric micro-SQUID susceptometer for scanning measurements of mesoscopic samples
We have fabricated and characterized micro-SQUID susceptometers for use in low-temperature scanning probe microscopy systems. The design features the following: a 4.6 μ m diameter pickup loop; an integrated field coil to apply a local field to the sample; an additional counterwound pickup-loop/field...
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| Veröffentlicht in: | Review of scientific instruments 2008-05, Vol.79 (5), p.053704-053704 |
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| container_title | Review of scientific instruments |
| container_volume | 79 |
| creator | Huber, Martin E. Koshnick, Nicholas C. Bluhm, Hendrik Archuleta, Leonard J. Azua, Tommy Björnsson, Per G. Gardner, Brian W. Halloran, Sean T. Lucero, Erik A. Moler, Kathryn A. |
| description | We have fabricated and characterized micro-SQUID susceptometers for use in low-temperature scanning probe microscopy systems. The design features the following: a
4.6
μ
m
diameter pickup loop; an integrated field coil to apply a local field to the sample; an additional counterwound pickup-loop/field-coil pair to cancel the background signal from the applied field in the absence of the sample; modulation coils to allow setting the SQUID at its optimum bias point (independent of the applied field), and shielding and symmetry that minimizes coupling of magnetic fields into the leads and body of the SQUID. We use a SQUID series array preamplifier to obtain a system bandwidth of
1
MHz
. The flux noise at
125
mK
is approximately
0.25
μ
Φ
0
∕
Hz
above
10
kHz
, with a value of
2.5
μ
Φ
0
∕
Hz
at
10
Hz
. The nominal sensitivity to electron spins located at the center of the pickup loop is approximately
200
μ
B
∕
Hz
above
10
kHz
, in the white-noise frequency region. |
| doi_str_mv | 10.1063/1.2932341 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_scita</sourceid><recordid>TN_cdi_proquest_miscellaneous_71623449</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>71623449</sourcerecordid><originalsourceid>FETCH-LOGICAL-c419t-b5393fae879b57435a5384d5df1f28a4e5fd9dd4ab63d840c2dbae806930c7473</originalsourceid><addsrcrecordid>eNp90E9LwzAYBvAgis7pwS8gPQkKnUmTNO1Rps7BQETnNaT5I5W1qXlbwW9vxgo7aS4h5MfD-z4IXRA8Izint2SWlTSjjBygCcFFmYo8o4dogjFlaS5YcYJOAT5xPJyQY3RCCk4oFtkEvS-CMrVvbB9qnTS1Dj59fVkv7xMYQNuu337ZkDgfEtCqbev2I2msgiHYxrY9JN7FN3jQvosJoJpuY-EMHTm1AXs-3lO0fnx4mz-lq-fFcn63SjUjZZ9WnJbUKVuIsuKCUa44LZjhxhGXFYpZ7kxpDFNVTk3BsM5MFTXOS4q1YIJO0dUutwv-a7DQy6aOY282qrV-AClIbIKxMsLrHYwLAgTrZBfqRoUfSbDcliiJHEuM9nIMHarGmr0cW4vgZgdA173qa9_-m_Yn_vZhD2VnHP0FRVeJJg</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>71623449</pqid></control><display><type>article</type><title>Gradiometric micro-SQUID susceptometer for scanning measurements of mesoscopic samples</title><source>AIP Journals Complete</source><source>AIP Digital Archive</source><source>Alma/SFX Local Collection</source><creator>Huber, Martin E. ; Koshnick, Nicholas C. ; Bluhm, Hendrik ; Archuleta, Leonard J. ; Azua, Tommy ; Björnsson, Per G. ; Gardner, Brian W. ; Halloran, Sean T. ; Lucero, Erik A. ; Moler, Kathryn A.</creator><creatorcontrib>Huber, Martin E. ; Koshnick, Nicholas C. ; Bluhm, Hendrik ; Archuleta, Leonard J. ; Azua, Tommy ; Björnsson, Per G. ; Gardner, Brian W. ; Halloran, Sean T. ; Lucero, Erik A. ; Moler, Kathryn A.</creatorcontrib><description>We have fabricated and characterized micro-SQUID susceptometers for use in low-temperature scanning probe microscopy systems. The design features the following: a
4.6
μ
m
diameter pickup loop; an integrated field coil to apply a local field to the sample; an additional counterwound pickup-loop/field-coil pair to cancel the background signal from the applied field in the absence of the sample; modulation coils to allow setting the SQUID at its optimum bias point (independent of the applied field), and shielding and symmetry that minimizes coupling of magnetic fields into the leads and body of the SQUID. We use a SQUID series array preamplifier to obtain a system bandwidth of
1
MHz
. The flux noise at
125
mK
is approximately
0.25
μ
Φ
0
∕
Hz
above
10
kHz
, with a value of
2.5
μ
Φ
0
∕
Hz
at
10
Hz
. The nominal sensitivity to electron spins located at the center of the pickup loop is approximately
200
μ
B
∕
Hz
above
10
kHz
, in the white-noise frequency region.</description><identifier>ISSN: 0034-6748</identifier><identifier>EISSN: 1089-7623</identifier><identifier>DOI: 10.1063/1.2932341</identifier><identifier>PMID: 18513072</identifier><identifier>CODEN: RSINAK</identifier><language>eng</language><publisher>United States</publisher><ispartof>Review of scientific instruments, 2008-05, Vol.79 (5), p.053704-053704</ispartof><rights>American Institute of Physics</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c419t-b5393fae879b57435a5384d5df1f28a4e5fd9dd4ab63d840c2dbae806930c7473</citedby><cites>FETCH-LOGICAL-c419t-b5393fae879b57435a5384d5df1f28a4e5fd9dd4ab63d840c2dbae806930c7473</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/rsi/article-lookup/doi/10.1063/1.2932341$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,776,780,790,1553,4498,27901,27902,76127,76133</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18513072$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Huber, Martin E.</creatorcontrib><creatorcontrib>Koshnick, Nicholas C.</creatorcontrib><creatorcontrib>Bluhm, Hendrik</creatorcontrib><creatorcontrib>Archuleta, Leonard J.</creatorcontrib><creatorcontrib>Azua, Tommy</creatorcontrib><creatorcontrib>Björnsson, Per G.</creatorcontrib><creatorcontrib>Gardner, Brian W.</creatorcontrib><creatorcontrib>Halloran, Sean T.</creatorcontrib><creatorcontrib>Lucero, Erik A.</creatorcontrib><creatorcontrib>Moler, Kathryn A.</creatorcontrib><title>Gradiometric micro-SQUID susceptometer for scanning measurements of mesoscopic samples</title><title>Review of scientific instruments</title><addtitle>Rev Sci Instrum</addtitle><description>We have fabricated and characterized micro-SQUID susceptometers for use in low-temperature scanning probe microscopy systems. The design features the following: a
4.6
μ
m
diameter pickup loop; an integrated field coil to apply a local field to the sample; an additional counterwound pickup-loop/field-coil pair to cancel the background signal from the applied field in the absence of the sample; modulation coils to allow setting the SQUID at its optimum bias point (independent of the applied field), and shielding and symmetry that minimizes coupling of magnetic fields into the leads and body of the SQUID. We use a SQUID series array preamplifier to obtain a system bandwidth of
1
MHz
. The flux noise at
125
mK
is approximately
0.25
μ
Φ
0
∕
Hz
above
10
kHz
, with a value of
2.5
μ
Φ
0
∕
Hz
at
10
Hz
. The nominal sensitivity to electron spins located at the center of the pickup loop is approximately
200
μ
B
∕
Hz
above
10
kHz
, in the white-noise frequency region.</description><issn>0034-6748</issn><issn>1089-7623</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNp90E9LwzAYBvAgis7pwS8gPQkKnUmTNO1Rps7BQETnNaT5I5W1qXlbwW9vxgo7aS4h5MfD-z4IXRA8Izint2SWlTSjjBygCcFFmYo8o4dogjFlaS5YcYJOAT5xPJyQY3RCCk4oFtkEvS-CMrVvbB9qnTS1Dj59fVkv7xMYQNuu337ZkDgfEtCqbev2I2msgiHYxrY9JN7FN3jQvosJoJpuY-EMHTm1AXs-3lO0fnx4mz-lq-fFcn63SjUjZZ9WnJbUKVuIsuKCUa44LZjhxhGXFYpZ7kxpDFNVTk3BsM5MFTXOS4q1YIJO0dUutwv-a7DQy6aOY282qrV-AClIbIKxMsLrHYwLAgTrZBfqRoUfSbDcliiJHEuM9nIMHarGmr0cW4vgZgdA173qa9_-m_Yn_vZhD2VnHP0FRVeJJg</recordid><startdate>20080501</startdate><enddate>20080501</enddate><creator>Huber, Martin E.</creator><creator>Koshnick, Nicholas C.</creator><creator>Bluhm, Hendrik</creator><creator>Archuleta, Leonard J.</creator><creator>Azua, Tommy</creator><creator>Björnsson, Per G.</creator><creator>Gardner, Brian W.</creator><creator>Halloran, Sean T.</creator><creator>Lucero, Erik A.</creator><creator>Moler, Kathryn A.</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20080501</creationdate><title>Gradiometric micro-SQUID susceptometer for scanning measurements of mesoscopic samples</title><author>Huber, Martin E. ; Koshnick, Nicholas C. ; Bluhm, Hendrik ; Archuleta, Leonard J. ; Azua, Tommy ; Björnsson, Per G. ; Gardner, Brian W. ; Halloran, Sean T. ; Lucero, Erik A. ; Moler, Kathryn A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c419t-b5393fae879b57435a5384d5df1f28a4e5fd9dd4ab63d840c2dbae806930c7473</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Huber, Martin E.</creatorcontrib><creatorcontrib>Koshnick, Nicholas C.</creatorcontrib><creatorcontrib>Bluhm, Hendrik</creatorcontrib><creatorcontrib>Archuleta, Leonard J.</creatorcontrib><creatorcontrib>Azua, Tommy</creatorcontrib><creatorcontrib>Björnsson, Per G.</creatorcontrib><creatorcontrib>Gardner, Brian W.</creatorcontrib><creatorcontrib>Halloran, Sean T.</creatorcontrib><creatorcontrib>Lucero, Erik A.</creatorcontrib><creatorcontrib>Moler, Kathryn A.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Review of scientific instruments</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Huber, Martin E.</au><au>Koshnick, Nicholas C.</au><au>Bluhm, Hendrik</au><au>Archuleta, Leonard J.</au><au>Azua, Tommy</au><au>Björnsson, Per G.</au><au>Gardner, Brian W.</au><au>Halloran, Sean T.</au><au>Lucero, Erik A.</au><au>Moler, Kathryn A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Gradiometric micro-SQUID susceptometer for scanning measurements of mesoscopic samples</atitle><jtitle>Review of scientific instruments</jtitle><addtitle>Rev Sci Instrum</addtitle><date>2008-05-01</date><risdate>2008</risdate><volume>79</volume><issue>5</issue><spage>053704</spage><epage>053704</epage><pages>053704-053704</pages><issn>0034-6748</issn><eissn>1089-7623</eissn><coden>RSINAK</coden><abstract>We have fabricated and characterized micro-SQUID susceptometers for use in low-temperature scanning probe microscopy systems. The design features the following: a
4.6
μ
m
diameter pickup loop; an integrated field coil to apply a local field to the sample; an additional counterwound pickup-loop/field-coil pair to cancel the background signal from the applied field in the absence of the sample; modulation coils to allow setting the SQUID at its optimum bias point (independent of the applied field), and shielding and symmetry that minimizes coupling of magnetic fields into the leads and body of the SQUID. We use a SQUID series array preamplifier to obtain a system bandwidth of
1
MHz
. The flux noise at
125
mK
is approximately
0.25
μ
Φ
0
∕
Hz
above
10
kHz
, with a value of
2.5
μ
Φ
0
∕
Hz
at
10
Hz
. The nominal sensitivity to electron spins located at the center of the pickup loop is approximately
200
μ
B
∕
Hz
above
10
kHz
, in the white-noise frequency region.</abstract><cop>United States</cop><pmid>18513072</pmid><doi>10.1063/1.2932341</doi><tpages>7</tpages></addata></record> |
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| ispartof | Review of scientific instruments, 2008-05, Vol.79 (5), p.053704-053704 |
| issn | 0034-6748 1089-7623 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_71623449 |
| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| title | Gradiometric micro-SQUID susceptometer for scanning measurements of mesoscopic samples |
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