PHYS4151 Advanced Condensed Matter Physics (2013/14)
12 lectures in Michaelmas Term
Additonal: Physical Biology of the Cell, R. Phillips, J, Kandev and J. Theriot (Taylor and Francis, 2009)
Syllabus: An overview of the building blocks of biology and the forces that dictate their interactions. The structure of biomacromolecules from random walk to protein crystal structures. Motility and diffusion in the low Reynolds number limit. Aggregating self-assembly in biology including virus assembly, cytoskeletal assembly and disease related assembly. Proteins as molecular machines including enzymes and motors. Bulk biophysical techniques including static and dynamic scattering techniques and sedmintation. Single molecule techniques including AFM, TIRF and fluorescence. Advanced microscopy techniques.
Low Dimensional Solids
12 lectures in Michaelmas and Epiphany Term
Additional: Physics and Chemistry of Solids, S.R. Elliott (Wiley)
Syllabus: Definition of low dimensional solids, relevant length and energy scales for manifestation of quantum confinement. Physical realisation of low dimensional structures: brief overview of the production of quantum dots, wires, nanotubes, graphene and semiconductor heterostructures. Zero dimensional solids: density of states in zero dimensions; optical properties of metallic and semiconducting quantum dots; electronic transport in zero dimensions: Coulomb blockade, Kondo effect, superconducting dots; applications of zero dimensional solids (emphasis on electronic/optical properties, e.g. single electron transistor, semiconductor nanocrystals as biological labels). One dimensional solids: density of states in one dimension: subbands and van Hove singularities, periodic boundary conditions in nanotubes; the special case of the 1D Fermi surface: Coulomb interaction and lattice coupling in 1D metals (breakdown of Fermi liquid behaviour, Peierls distortion); transport in one dimension: transport regimes, phase coherence, Landauer formula, resonant tunnelling, universal conductance fluctuations, localisation; quantised vibrations, heat capacity and thermal transport in one dimension; applications of one dimensional solids. Two dimensional solids: density of states and the Fermi surface in two dimensions; confinement in two dimensions: graphene and real (finite-depth) potential wells in semiconductor heterostructures; transport in two dimensional solids: conductivity of a two dimensional electron gas, subband filling; magneto-transport in two dimensions: resistivity and conductivity tensors, Büttiker-Landauer formalism, integer quantum Hall effect; applications of two-dimensional solids.
12 Lectures in Epiphany Term
Syllabus: Review of the general theories of light/matter interaction: classical and quantum. Correspondence of the quantised nature of confined light-wave modes with one-dimensional matter wave solutions to the Schrödinger equation. Optical properties of materials, particularly doped semiconductors. Semiconductor (p-n) junctions. Optoelectronic devices using the semiconductor p-n junction: Photovoltaic/photoconductive detectors; Solar cell; Light emitting diode, (Franz Keldysh effect) Electro-absorption modulator. Optical waveguide devices: Passive devices (power splitters/combiners); Active devices (electro-optic/thermo-optic modulators, attenuators).
3 lectures in Easter Term, one by each lecturer.
Lectures: 2 one-hour lectures per week
Problem exercises: See http://www.dur.ac.uk/physics/students/problems/