Quantum models of quasicrystals

Add to your list(s) Download to your calendar using vCal

• Anuradha Jagannathan (Paris)
• Monday 28 November 2016, 15:30-17:00
• Ryle Seminar Room (930) .

If you have a question about this talk, please contact pjh65.

Quasicrystals are expected, by virtue of their complex structural order and lack of translational invariance, to possess unusual electronic properties. Studies of simple models in one, two and three dimensions indicate that typical wave-functions of an electron in a quasiperiodic environment are intermediate between extended and localized, and characterized by multifractal exponents. Such states are called critical states in analogy with the states at the critical point of a metal-insulator transition. Quantum diffusion in a quasicrystal is expected to be anomalous, with small or vanishing diffusivity. Experiments indicate that quasicrystals are indeed very poor conductors. After an introduction to quasicrystals, I will discuss the state of our current understanding of these solids, and some of the theoretical problems. A scheme for an experimental realization of a quantum simulator for a two dimensional quasicrystal using an optical potential (1) will be presented, as a step towards providing answers to open questions.

(1) N.Mace, A.Jagannathan and M.Duneau, Crystals, 6(10) 124 (2016)

This talk is part of the AMOP list series.

This talk is included in these lists:

• AMOP list
• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• Ryle Seminar Room (930)
• School of Physical Sciences
• Thin Film Magnetic Talks

Note that ex-directory lists are not shown.