# Solid state physics Definition and 133 Discussions

Solid-state physics is the study of rigid matter, or solids, through methods such as quantum mechanics, crystallography, electromagnetism, and metallurgy. It is the largest branch of condensed matter physics. Solid-state physics studies how the large-scale properties of solid materials result from their atomic-scale properties. Thus, solid-state physics forms a theoretical basis of materials science. It also has direct applications, for example in the technology of transistors and semiconductors.

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1. ### Einstein solid state model exercise

I tried to solve it considering the canonical ensemble (since the system is at the equilibrium with temperature T) and started finding the partition function: The problem is I am not sure if I have done it correctly and need help because I don't really know where to check.
2. ### A How to map high symmetry points from a primitive to a conventional cell?

We usually plot electronic bands with the help of high symmetry points of the irreducible zone of primitive cell of particular material. But if we want to plot bands with conventional cell, we have to map the high symmetry points from primitive cell to conventional cell. so how can we map the...
3. ### Does Drain Current Increase if Doping Increases?

I'm an EE with only a surface knowledge of solid state. I know this forum is mostly for students but I don't know where else to find a lot of physicists. Also, please forgive me if this is a dumb question. For a circuit I want to build, I need a transistor that can conduct > 10,000 A, but does...

36. ### A Bloch theorem proof with V(x)=V(x+ma)

In Grosso's Solid State Physics, chapter 1, page 2, The author said that: Therefore, I plug (4) into (1), and I expect that I can get the following relationship, which proves that ##H\left|W_{k}(x)\right\rangle## belongs to the subspace ##\mathbf{S}_{k}## of plane waves of wavenumbers...
37. ### A Why do we need to know "two-bands" Hall coefficient and magn

(Oh my god, why can't my post show normally? Some sentences just disappear, but I can still see them while editing. It's very weird. Can someone help me? I've reported.) I know only partially filled bands result in current density, and I think there must be not only 2 partially filled bands...
38. ### Solid State Physics by Prof. Amal Kumar Das (NPTEL):- Lecture 1: Atom to Solid Structure

Copyright strictly reserved to Prof. Amal Kumar Das and NPTEL, Govt. of India. Lectures: http://www.nptel.ac.in/courses/115105099/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=115105099
39. ### Solid State Physics by Prof. Amal Kumar Das (NPTEL):- Lecture 2: Atom to Solid Structure (Contd.)

Copyright strictly reserved to Prof. Amal Kumar Das and NPTEL, Govt. of India. Lectures: http://www.nptel.ac.in/courses/115105099/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=115105099
40. ### Solid State Physics by Prof. Amal Kumar Das (NPTEL):- Lecture 3: Structure of Solid

Copyright strictly reserved to Prof. Amal Kumar Das and NPTEL, Govt. of India. Lectures: http://www.nptel.ac.in/courses/115105099/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=115105099
41. ### Solid State Physics by Prof. Amal Kumar Das (NPTEL):- Lecture 4 : Structure of Solid (Contd.)

Copyright strictly reserved to Prof. Amal Kumar Das and NPTEL, Govt. of India. Lectures: http://www.nptel.ac.in/courses/115105099/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=115105099
42. ### Solid State Physics by Prof. Amal Kumar Das (NPTEL):- Lecture 5: Crystal Structure

Copyright strictly reserved to Prof. Amal Kumar Das and NPTEL, Govt. of India. Lectures: http://www.nptel.ac.in/courses/115105099/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=115105099
43. ### Solid State Physics by Prof. Amal Kumar Das (NPTEL):- Week 1 Assignment Solution

Copyright strictly reserved to Prof. Amal Kumar Das and NPTEL, Govt. of India. Lectures: http://www.nptel.ac.in/courses/115105099/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=115105099
44. ### Solid State Physics by Prof. Amal Kumar Das (NPTEL):- Lecture 6: Crystal Structure (Contd.)

Copyright strictly reserved to Prof. Amal Kumar Das and NPTEL, Govt. of India. Lectures: http://www.nptel.ac.in/courses/115105099/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=115105099
45. ### Solid State Physics by Prof. Amal Kumar Das (NPTEL):- Lecture 7: Crystal Structure (Contd.)

Copyright strictly reserved to Prof. Amal Kumar Das and NPTEL, Govt. of India. Lectures: http://www.nptel.ac.in/courses/115105099/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=115105099
46. ### Solid State Physics by Prof. Amal Kumar Das (NPTEL):- Lecture 8: Crystal Structure (Contd.)

Copyright strictly reserved to Prof. Amal Kumar Das and NPTEL, Govt. of India. Lectures: http://www.nptel.ac.in/courses/115105099/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=115105099
47. ### Solid State Physics by Prof. Amal Kumar Das (NPTEL):- Lecture 9: Crystal Structure (Contd.)

Copyright strictly reserved to Prof. Amal Kumar Das and NPTEL, Govt. of India. Lectures: http://www.nptel.ac.in/courses/115105099/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=115105099
48. ### Solid State Physics by Prof. Amal Kumar Das (NPTEL):- Lecture 10: Crystal Structure (Contd.)

Copyright strictly reserved to Prof. Amal Kumar Das and NPTEL, Govt. of India. Lectures: http://www.nptel.ac.in/courses/115105099/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=115105099
49. ### Solid State Physics by Prof. Amal Kumar Das (NPTEL):- Lecture 11: Crystal Structure (Contd.)

Copyright strictly reserved to Prof. Amal Kumar Das and NPTEL, Govt. of India. Lectures: http://www.nptel.ac.in/courses/115105099/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=115105099
50. ### Solid State Physics by Prof. Amal Kumar Das (NPTEL):- Week 2 Assignment Solution

Copyright strictly reserved to Prof. Amal Kumar Das and NPTEL, Govt. of India. Lectures: http://www.nptel.ac.in/courses/115105099/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=115105099