‘Magnetometers’, ‘Superconductive’ electromagnetic sensors, and specially designed components therefor, as follows: a. ‘Magnetometers’, other than those specified in the CML or in Regulation (EU) 2021/821, having a ‘sensitivity’ lower (better) than 1,0 nT (rms) per square root Hz Technical Note: For the purposes of this control, ‘sensitivity’ (noise level) is the root mean square of the device-limited noise floor which is the lowest signal that can be measured b. ‘Superconductive’ electromagnetic sensors, components manufactured from ‘superconductive’ materials: 1. Designed for operation at temperatures below the ‘critical temperature’ of at least one of their ‘superconductive’ constituents (including Josephson effect devices or ‘superconductive’ quantum interference devices (SQUIDS)); 2. Designed for sensing electromagnetic field variations at frequencies of 1 kHz or less; and 3. Having any of the following characteristics: a. Incorporating thin-film SQUIDS with a minimum feature size of less than 2 μm and with associated input and output coupling circuits; b. Designed to operate with a magnetic field slew rate exceeding 1 x 10 6 magnetic flux quanta per second; c. Designed to function without magnetic shielding in the earth’s ambient magnetic field; or d. Having a temperature coefficient less (smaller) than 0,1 magnetic flux quantum/K
