TY - JOUR
T1 - Carbon isotope effect in single-crystal Rb3C60
AU - Fuhrer, M. S.
AU - Cherrey, K.
AU - Zettl, A.
PY - 1997/1/1
Y1 - 1997/1/1
N2 - We have synthesized single crystals of isotopically enriched Rb3C60. The very sharp superconducting transitions in single crystal superconducting fullerides allow us to determine the isotope effect on the superconducting transition temperature, Tc, with unprecedented accuracy. We find that the carbon isotope shift exponent αcarbon for 99% 13C substitution is 0.21±0.012, significantly smaller than other values reported in the literature1-6. This, coupled with the near-zero rubidium isotope effect reported by B. Burk et. al. 7, should place considerable constraints on any theoretical model of superconductivity in the alkali fullerides.
AB - We have synthesized single crystals of isotopically enriched Rb3C60. The very sharp superconducting transitions in single crystal superconducting fullerides allow us to determine the isotope effect on the superconducting transition temperature, Tc, with unprecedented accuracy. We find that the carbon isotope shift exponent αcarbon for 99% 13C substitution is 0.21±0.012, significantly smaller than other values reported in the literature1-6. This, coupled with the near-zero rubidium isotope effect reported by B. Burk et. al. 7, should place considerable constraints on any theoretical model of superconductivity in the alkali fullerides.
UR - http://www.scopus.com/inward/record.url?scp=17144457197&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(97)01010-1
DO - 10.1016/S0921-4534(97)01010-1
M3 - Article
AN - SCOPUS:17144457197
SN - 0921-4534
VL - 282-287
SP - 1917
EP - 1918
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - PART 3
ER -