Reliable (reported energy within 300 eV of a reference energy)
Comment:
12 A Tb/n-type Si(111)-(7x7) with a resistivity of 1.8 - 3.2 ohm cm. The thickness was measured using a quartz-crystal thickness monitor. The substrate surface was cleaned by cycles of Ar+ ion bombardment and annealing (T = 1100 K) by electron bombardment