Why NanoSQUIDs are important: an introduction to the focus issue

Foley, C. P.; Hilgenkamp, H.

doi:10.1088/0953-2048/22/6/064001

Cited by 126 publications

(96 citation statements)

References 37 publications

(50 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to achieve a sensitive magnetometer with a low magnetic field noise, ܵ ଵȀଶ = ܵ ) ଵȀଶ / A, SQUIDs are commonly designed to have pickup loops with large effective area A. In recent years there has been growing interest in the development of nano-SQUIDs for the study of quantum magnetism and for nanomagnetic imaging [3][4][5][6][7][8][9][10][11][12] . In this case, field sensitivity is compromised for the benefit of spatial resolution and sensitivity to magnetic dipoles.…”

mentioning

confidence: 99%

A scanning superconducting quantum interference device with single electron spin sensitivity

et al. 2013

View full text Add to dashboard Cite

show abstract

mentioning

confidence: 99%

A scanning superconducting quantum interference device with single electron spin sensitivity

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Recent reviews on nanoSQUIDs are available [1][2][3][4][5]. It would not be possible to make justice to the vast literature on the subject; some examples are Refs.…”

Section: Introductionmentioning

confidence: 99%

The Stationary SQUID

Berger

2018

J Low Temp Phys

View full text Add to dashboard Cite

In the customary mode of operation of a SQUID, the electromagnetic field in the SQUID is an oscillatory function of time. In this situation, electromagnetic radiation is emitted, and couples to the sample. This is a back-action that can alter the state that we intend to measure. A circuit that could perform as a stationary SQUID consists of a loop of superconducting material that encloses the magnetic flux, connected to a superconducting and to a normal electrode. This circuit does not contain Josephson junctions, or any other miniature feature. We study the evolution of the order parameter and of the electrochemical potential in this circuit; they converge to a stationary regime and the voltage between the electrodes depends on the enclosed flux. We obtain expressions for the power dissipation and for the heat transported by the electric current; the validity of these expressions does not rely on a particular evolution model for the order parameter. We evaluate the influence of fluctuations. For a SQUID perimeter of the order of 1µm and temperature 0.9T c , we obtain a flux resolution of the order of 10 −5 Φ 0 /Hz 1/2 ; the resolution is expected to improve as the temperature is lowered.

show abstract

“…At the same time, the Josephson (weak-coupling) feature (iii) became the basis of small-scale superconducting electronics [88,[94][95][96][97][98], which also uses the emergence of half-integer magnetic flux quantization in circuits with superconducting currents [99,100]. Smartly designed SQUID devices with several Josephson junctions and a quantized flux serve as sensible detectors of magnetic field and electromagnetic waves, which, in their turn, are utilized in industry, research, and medicine [95][96][97][98]101]. Recently oscillatory effects inherent to superfluid 3 He [102][103][104] and 4 He [103][104][105], which are similar to the Josephson one, were used to construct superfluid helium quantum interference devices (SHeQUIDs) [106].…”

Section: Introductionmentioning

confidence: 99%