Thiagarajar college (autonomous) madurai – 9




НазваниеThiagarajar college (autonomous) madurai – 9
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UNIT III PHONONS

Vibrations of crystals with mono atomic basis – Two atoms per primitive basis – Quantization of elastic waves (Phonons) – Phonon momentum – Inelastic scattering by phonons – Phonon heat capacity : Planck distribution, Density of states in one and three dimension – Debye and Einstein model of specific heat capacity – Anharmonic crystal interactions – Thermal conductivity – Umklapp process.



UNIT IV FREE ELECTRON FERMI GAS & ENERGY BANDS

Energy levels in one dimension – Fermi – Dirac distribution for a free electron gas – Free electron gas in three dimensions – Heat capacity of the electron gas – Electrical conductivity and Ohm’s law: Mathieson’s rule, Umklapp scattering – Hall effect – Wiedmann – Franz law. Nearly free selectron model: Origin and magnitude of energy gap – Bloch functions – Kronig – Penny model – Wave equation of an electron in a periodic potential: Bloch theorem, crystal momentum.


UNIT V SEMICONDUTORS, FERMI SURFACES AND METALS

Semiconductors: Band gap – Equations of motion – Holes and effective mass – Physical interpretation of the effective mass – Effective masses in semiconductors – Intrinsic carrier concentration, Impurity conductivity. Fermi Surfaces and Metals : Reduced zone scheme – Periodic zone scheme – Construction of Fermi surfaces – Electron orbits, hole orbits and open orbits – Calculation of energy bands: Tight binding method – Wigner – Seitz method – Cohesive energy – Pseudopotential methods – Experimetal methods: Quantization of orbits in a magnetic field – De Haas – van Alphen effect.


TEXT BOOK:

Introduction to Solid State Physics (VII ed.) ,Kittel, C. :, John Wiley & Sons, 1996. ISBN : 81 – 265 – 1045 – 5

Unit – I Chapter- 1 & 2;Unit – II Chapter- 3;Unit – III Chapters- 4 & 5

Unit – IV Chapters- 6 & 7; Unit – V Chapters- 8 & 9


REFERENCE BOOKS:

    1. Introductory Solid State Physics (II ed.),Myers, H.P.:, Viva Low – priced Student Edition, Viva Books Pvt. Ltd, 1998.

    2. Elementary Solid State Physics ,Omar, M. A.:, Pearson Education, 2006, ISBN 81-7758-377-8

    3. Solid State Physics – An Introduction to Theory and Experiment, Ibach, H. & Luth, H.: Narosa Publishing House, 1991.

    4. Solid State Physics, (revised VI Edition ), Pillai, S.O.: New Age International, 2007.

    5. Elements of Solid State Physics (II ed.) Srivatsava, J.P.: Phi Publishers, 2007, ISBN 978-81-203-2847-1.



THIAGARAJAR COLLEGE – AUTONOMOUS, MADURAI – 625 009

(Re Accredited With ‘A’ Grade by NAAC)

DEPARTMENT OF PHYSICS

(From 2011 – 13 batch onwards)


Course

: M.Sc. Physics

Code :

2PP2

Semester

: II

No. of hrs. allotted :

5

Paper

: Core

No. of credits :

5


ELECTROMAGNETIC THEORY

COURSE OBJECTIVES:

  • This paper deals with the fundamental principles of electrostatics, magnetostatics and electrodynamics.

  • Make the student familiarize with the application of Maxwell’s equations to physical situations and propagation of electromagnetic waves in conducting media.

  • Students will be taught the essential principles of electrodynamics and its applications.
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