Abstract
A graphical method for determining temperature below 10 K using properties of superconductors is reported. A small superconducting wire which has known current/voltage characteristics can be used as a temperature sensor. This method exhibits many advantages such as a relatively fast response time and a large signal for small temperature changes. By assuring good thermal contact between the sensor and the object, the temperature of which is to be measured, and a thermal insulation between the sensor and the helium bath, it is possible to have a very accurate measurement. For comparison, we have measured the temperature of a copper block with this sensor and with a calibrated carbon resistor.
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