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Updated: Jul 13, 2026

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers

Published on: September 4, 2015

Berry-phase blockade in single-molecule magnets.

Gabriel González¹, Michael N Leuenberger

¹NanoScience Technology Center, University of Central Florida, Orlando, Florida 32826, USA.

Physical Review Letters

|August 7, 2007

Summary

This summary is machine-generated.

We investigated electron transport through single-molecule magnets (SMMs) considering topological interference. Placing SMMs between oppositely spin-polarized leads is crucial for detecting spin tunneling and observing topological zeros in the current.

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Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

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Published on: July 20, 2022

Area of Science:

Quantum physics
Molecular magnetism
Condensed matter physics

Background:

Electron transport through single-molecule magnets (SMMs) is a key area in molecular electronics.
The Coulomb blockade regime significantly influences charge transport at the molecular level.
Topological effects, such as spin Berry phases, can emerge in quantum systems with large spins.

Purpose of the Study:

To formulate a theoretical model for electron transport through SMMs in the Coulomb blockade regime.
To incorporate topological interference effects arising from spin Berry phases.
To determine conditions for detecting spin tunneling and topological zeros in the transport current.

Main Methods:

Theoretical formulation of electron transport.
Inclusion of Coulomb blockade effects.
Analysis of spin Berry phases and topological interference.
Investigation of spin-polarized transport through SMMs.

Main Results:

Electron transport through SMMs is modeled considering topological interference.
Spin Berry phases are identified as the origin of interference for large SMM spins.
Detection of spin tunneling in the stationary current requires oppositely spin-polarized leads for incoherent spin states.
Topological zeros are observed in the current as a function of the transverse magnetic field.

Conclusions:

Topological interference effects are significant for electron transport through SMMs.
Specific lead polarization is essential for observing spin tunneling signatures.
The study reveals a method for detecting quantum phenomena in molecular magnets via transport measurements.