The Dual Nature of Electrons

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• Dr Filip Ronning (Los Alamos National Laboratory)
• Monday 12 June 2006, 11:15-12:15
• Mott Seminar Room, Cavendish Laboratory, Department of Physics.

If you have a question about this talk, please contact Michael Sutherland.

Electrons in many strongly correlated materials fight two competing tendencies of becoming localized versus remaining itinerant. The resolution to this struggle often leads to fascinating phenomena such as high Tc superconductors, colossal magnetoresistance, and heavy fermions. I will present our recent results on the CeMIn5 (M = Co, Rh, Ir) family of heavy fermions. De Haas van Alphen results have shown that the f electron can be either localized or itinerant depending on the chemical composition or pressure. We have shown that the crossover from localized to itinerant occurs at the antiferromagnetic quantum critical point, where diverging fluctuations lead to interesting non-Fermi liquid physics, which can not be understood in the conventional framework of quantum phase transitions. I will then present several experiments from transport, thermodynamics, and ARPES which demonstrate the dual nature of electrons in various strongly correlated systems. Suggestions for unifying themes and future directions will be discussed.

This talk is part of the Quantum Matter Seminar series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Mott Seminar Room, Cavendish Laboratory, Department of Physics
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• Quantum Matter Seminar
• School of Physical Sciences
• Thin Film Magnetic Talks

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