# Solid State Physics

### Code

3871

### Academic unit

Faculdade de Ciências e Tecnologia

### Department

Departamento de Física

### Credits

6.5

### Teacher in charge

João Paulo Lança Pinto Casquilho, Maria de Fátima Guerreiro da Silva Campos Raposo

### Weekly hours

5

### Total hours

43

### Teaching language

Português

### Objectives

**Objectives **

One intends to focus the fundamental concepts of Condensed Matter, emphasizing the applications to engineering and life problem systematization and solving. Fundamental proprieties of Condensed Matter will be verified in experimental laboratory sessions, involving the comprehension of experimental setups, data collecting and treatment systematization and elaboration of scientific reports.

### Subject matter

**Solid State Physics Program**

**1. Electrical Properties of metals**1.1 Classical theory of conduction in metals.

1.2 Failures of the classical model.

1.3 Qualitative aspects of the electric conduction from a quantum view-point.

1.4 Band theory of solids

1.5 Fermi-Dirac distribution

1.6 The density of states.

1.7 The free electron model.

1.8 The density of occupied states.

1.9 Introduction to band theory of electrical conduction.

**2. Semiconductors**2.1 Band theory of solids –again.

2.2 The difference between insulators and semiconductors.

2.3 Holes.

2.4 Optical properties of semiconductors. Photocondutivity.

2.5 The effective mass.

2.6. n-type and p-type semiconductors. Hall effect.

2.7 The free electron model applied to semiconductors.

**3. Thermal properties of solids**3.1 Thermal vibrations of the atoms.Phonons.

3.2 Thermal expansion.

3.3 Contribution of thermal vibrations of crystalline lattice for the heat capacity of the solids.

3.3.1 Classical approach.

3.3.2 Einstein Model.

3.3.3 Debye Model

3.4 Thermal conductivity.

**4. Magnetic properties of solids**4.1 Macroscopic magnetic quantities.

4.2 Atomic magnetic moment.

4.3 Paramagnetism. Brillouin theory.

4.4 Ferromagnetism. Ferromagnetic domains.

**5. ****Crystals**** and crystalline solids**5.1 Compact structures

5.2 Non-compact structures.

5.3 Crystalline lattice.

5.4 Labelling crystal planes.

5.5 X-ray diffraction

### Bibliography

** 4. Bibliography**

### Evaluation method

**5. **Assessment elements

**5.1. **Laboratorial component

**5.1.** Preparation of five experimental sessions

**5.2.** Performing five laboratorial experimental sessions. To this component a final mark, *N _{L}*

*,*is attributed.

**5.2. **Online components that could be questions problem solving, simulation or conceiving a lesson.**6. ****Exams**Two final exams. The exams consist of two parts: a theoretical part and a problem solving part where consultation is allowed. To this component a final mark,

**N**_{E}

**,**#### 7. Assessment rules

**7.1**. Admission to final exam

**7.1.1.** Students without previous attendanceThe access to final exam is according with the following conditions: Laboratory mark, *N _{L}≥*10

**7.1.2. **Students with previous attendanceAutomatically admitted to exam

**7.2. **Course approval and mark

*N _{ }=0,7 N_{L}+O,3 N_{E}* ,

*N*≥10 and

*N*8

_{E}≥**.**

**8.Final mark, **_{F}_{}*N _{F }= N*

**9. Scales and rounding**

All the marks are given within the scale from 0 to 20. The marks of each component are given up to the first decimal point and the final mark is and integer.