NbN superconducting thin film
$1,000.00
Brand:OEfind
描述
描述
NbN thin films have been a hot spot in the field of superconducting electronics in recent decades due to their high critical transition temperature, high energy gap and high upper critical field.
| have been successfully applied to the development of high performance SNSPD devices. In the NbN-SNSPD of 1550 nm band, the detection efficiency of the system exceeds 90% at 2.1 K working temperature, reaching the best level in the world. Based on high-performance and high-uniformity thin films, the preparation of small-scale industrialized SNSPD devices has been realized. The successful application of high-performance SNSPD devices in the field of quantum information also proves the excellent performance of NbN/NbTiN superconducting thin film materials from the perspective of application. |
film thickness 150nm, 1*1 um2 range: Rq = 0.45nm
| growth method | reactive magnetron sputtering | |
| substrate material | MgO(100) | SiO2/Si(100) |
| film thickness | 2-500 nm: ±5% | |
| film thickness uniformity | 4 inch: ± 5% | |
| film structure | epitaxial film, fcc,a = 4.46 Å | polycrystalline film |
| surface roughness | < 0.5 nm RMS | < 2 nm RMS |
| superconducting transition temperature | > 16 K @ 200 nm | > 15 K @ 200 nm |
| > 8 K @ 3 nm | > 6 K @ 7 nm | |
| film resistivity | < 100 μΩ cm @ 200 nm | < 300 μΩ cm @ 200 nm |
| < 500 μΩ cm @ 3 nm | < 600 μΩ cm @ 7 nm | |
| General size | 5×5×0.4 mm-50×50×0.4 mm | dia 4″×0.625mm |
Note: Films of different thicknesses, substrates of special sizes and directions can be provided according to customer requirements.
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