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| Content Provider | Springer Nature Link |
|---|---|
| Author | Ishisaki, Y. Kurabayashi, H. Hoshi, A. Ohashi, T. Yoshi, T. Hagihara, T. Mitsuda, K. Tanaka, K. |
| Copyright Year | 2008 |
| Abstract | We investigated the magnet field dependence of the X-ray pulse height and the critical current of a Ti/Au bilayer TES micro-calorimeter. The pulse height was strongly affected by the magnetic field intensity applied perpendicularly to the TES surface. We found that the critical current at zero temperature, I $_{ c0}$, decreased by a factor of two by applying a magnet field of ∼10 μT. Our data are consistent with a TES sensitivity proportional to (I/I $_{ c0}$)$^{−2/3}$, as predicted by the Ginzburg-Landau theory. This fact implies that the shape of the R–T curve of the TES is partly determined by the critical current of the superconductor. In order to make our TES microcalorimeters less sensitive to the external magnetic field, we fabricated devices equipped with on-chip magnetic shielding. One device has a turn-around style electrical lead made of Al, in which the return line is laid beneath the Ti/Au TES. Another device has a Nb layer deposited between a multi-layer membrane. We demonstrated that the devices were usable below 200 μT with small degradation of the pulse height and energy resolution. |
| Starting Page | 131 |
| Ending Page | 137 |
| Page Count | 7 |
| File Format | |
| ISSN | 00222291 |
| Journal | Journal of Low Temperature Physics |
| Volume Number | 151 |
| Issue Number | 1-2 |
| e-ISSN | 15737357 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2008-01-26 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Transition edge sensor Microcalorimeter X-ray Superconducting optical, X-ray, and ?-ray detectors Photodetectors X-ray and ?-ray spectrometers Magnetism, Magnetic Materials Characterization and Evaluation of Materials Condensed Matter |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Condensed Matter Physics Materials Science |
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