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Related Experiment Video

Updated: Jun 24, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe₁₊_YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

Isotope effect in superconducting fullerenes.

S Chakravarty, S A Kivelson, M I Salkola

Science (New York, N.Y.)

|May 29, 1992

Summary

Isotopic mass can surprisingly decrease superconducting transition temperature (T(c)) in alkali-doped C(60), even with electronic interactions. This finding aligns with a new electronic mechanism, offering testable predictions for future experiments.

Area of Science:

Superconductivity research
Condensed matter physics
Materials science

Background:

Superconducting transition temperature (T(c)) is crucial in materials science.
Isotopic effects typically relate to phonon-mediated superconductivity.
Alkali-doped C(60) fullerene compounds exhibit interesting superconducting properties.

Purpose of the Study:

To investigate the impact of isotopic substitution on T(c) in alkali-doped C(60).
To explore the mechanism behind observed isotopic shifts in superconductivity.
To determine if electronic interactions can explain paradoxical isotopic effects.

Main Methods:

Experimental examination of isotopic substitution effects.
Analysis of superconducting transition temperature (T(c)) measurements.

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Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

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Related Experiment Videos

Last Updated: Jun 24, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe₁₊_YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method

Published on: July 19, 2019

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

Published on: July 8, 2021

Comparison of experimental data with theoretical electronic mechanisms.

Main Results:

A significant decrease in T(c) was observed with increasing isotopic mass.
This decrease occurs even when superconductivity is not phonon-mediated.
Experimental results are consistent with a proposed electronic mechanism for superconductivity.

Conclusions:

Isotopic mass can inversely affect T(c) in alkali-doped C(60) via electronic interactions.
The findings support a novel electronic mechanism over traditional phonon-mediated theories.
New, experimentally verifiable predictions regarding isotopic effects in fullerene superconductors are presented.