Figure 1
K. Brandner et al. [1]

Figure 1: A simple three-terminal thermoelectric device that converts heat into electrical current. The circle is a simple conductor in thermal and electrical contact with two temperature and charge reservoirs (the hotter reservoir is in red, the cooler reservoir in blue.) The third terminal is a probe (yellow), which, on average, does not exchange any heat or particles with the conductor. Brandner et al. show that turning on the magnetic field B, can improve the efficiency of the device.