## Abstract

We evaluate a typical value of higher-order cumulants (irreducible moments) of conductance fluctuations that could be extracted from magnetoconductance measurements in a single sample when an external magnetic field is swept over an interval B_{0}. We find that the nth cumulant has a sample-dependent random part ±〈〈g^{2}〉〉^{n/2}√ a_{n}B_{c}/B_{0}, where 〈〈g ^{2}〉〉 is the variance of conductance fluctuations, B _{c} is a correlation field, and a_{n}∼n! This means that an apparent deviation of the conductance distribution from a Gaussian shape, manifested by nonvanishing higher cumulants, can be a spurious result of correlations of conductances at different values of the magnetic field.

Original language | English |
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Article number | 121301 |

Pages (from-to) | 1213011-1213014 |

Number of pages | 4 |

Journal | Physical Review B - Condensed Matter and Materials Physics |

Volume | 68 |

Issue number | 12 |

Publication status | Published - Sept 2003 |

## Research Beacons, Institutes and Platforms

- National Graphene Institute