Principles of Quantum Mechanics P1) Energy is quantized The photoelectric effect Energy quanta E = h  where h = 6.635 10 -34 J-s.

Slides:



Advertisements
Similar presentations
What Did Einstein Say About Light?
Advertisements

Introduction to Quantum Theory
CHAPTER 2 Introduction to Quantum Mechanics
Application of quantum in chemistry
PHY 102: Waves & Quanta Topic 14 Introduction to Quantum Theory John Cockburn Room E15)
Given the Uncertainty Principle, how do you write an equation of motion for a particle? First, remember that a particle is only a particle sort of, and.
2. Solving Schrödinger’s Equation Superposition Given a few solutions of Schrödinger’s equation, we can make more of them Let  1 and  2 be two solutions.
Wave Packets Recall that for a wave packet  x  k~1 to localize a wave to some region  x we need a spread of wavenumbers  k de Broglie hypothesis =h/p.
PHY 1371Dr. Jie Zou1 Chapter 41 Quantum Mechanics (cont.)
Wave mechanics in potentials Modern Ch.4, Physical Systems, 30.Jan.2003 EJZ Particle in a Box (Jason Russell), Prob.12 Overview of finite potentials Harmonic.
Section 3.2 – page 174. De Broglie  Proposed the dual nature of light; it could act as a particle or a wave.
Modern Physics lecture 3. Louis de Broglie
Ch 9 pages ; Lecture 21 – Schrodinger’s equation.
ENE 311 Lecture 2. Diffusion Process The drift current is the transport of carriers when an electric field is applied. There is another important carrier.
Physics 451 Quantum mechanics I Fall 2012 Sep 10, 2012 Karine Chesnel.
1 Introduction to quantum mechanics (Chap.2) Quantum theory for semiconductors (Chap. 3) Allowed and forbidden energy bands (Chap. 3.1) What Is An Energy.
Bound States 1. A quick review on the chapters 2 to Quiz Topics in Bound States:  The Schrödinger equation.  Stationary States.  Physical.
Physics 452 Quantum mechanics II Winter 2012 Karine Chesnel.
Ch 9 pages Lecture 22 – Harmonic oscillator.
An Electron Trapped in A Potential Well Probability densities for an infinite well Solve Schrödinger equation outside the well.
مدرس المادة الدكتور :…………………………
(1) Experimental evidence shows the particles of microscopic systems moves according to the laws of wave motion, and not according to the Newton laws of.
Bound States Review of chapter 4. Comment on my errors in the lecture notes. Quiz Topics in Bound States: The Schrödinger equation. Stationary States.

Quantum Physics II.
Physics 451 Quantum mechanics I Fall 2012 Sep 12, 2012 Karine Chesnel.
Physics 361 Principles of Modern Physics Lecture 11.
Modern Physics (II) Chapter 9: Atomic Structure
Arrangement of Electrons in Atoms
The Quantum Model of the Atom. Intro to Quantum Mechanics.
Free particle in 1D (1) 1D Unbound States
Monday, April 6, 2015PHYS , Spring 2015 Dr. Jaehoon Yu 1 PHYS 3313 – Section 001 Lecture #17 Monday, April 6, 2015 Dr. Jaehoon Yu Normalization.
Physics 361 Principles of Modern Physics Lecture 13.
Monday, March 30, 2015PHYS , Spring 2015 Dr. Jaehoon Yu 1 PHYS 3313 – Section 001 Lecture #15 Monday, March 30, 2015 Dr. Jaehoon Yu Wave Motion.
Tunneling An electron of such an energy will never appear here! classically E kin = 1 eV 0 V-2 Vx.
5. Quantum Theory 5.0. Wave Mechanics
Chapter 5: Quantum Mechanics
Introduction to Quantum Mechanics
1 2. Atoms and Electrons How to describe a new physical phenomenon? New natural phenomenon Previously existing theory Not explained Explained New theoryPredicts.
Modern Physics lecture X. Louis de Broglie
EMR exhibits particle (photon) and wave (ν, λ, Amp) properties and all energy is transferred in quantum. Elements have unique emission spectra because.
量子力學導論 Chap 1 - The Wave Function Chap 2 - The Time-independent Schrödinger Equation Chap 3 - Formalism in Hilbert Space Chap 4 - 表象理論.
Topic I: Quantum theory Chapter 7 Introduction to Quantum Theory.
Louis de Broglie, (France, ) Wave Properties of Matter (1923) -Since light waves have a particle behavior (as shown by Einstein in the Photoelectric.
1924: de Broglie suggests particles are waves Mid-1925: Werner Heisenberg introduces Matrix Mechanics In 1927 he derives uncertainty principles Late 1925:
1 Textbook: Electronic Properties of Materials, Rolf E. Hummel, 4 th. Ed. Ref.:Electrons in Solids- An Introductory Survey, R. H. Bube, 3 rd Ed.
The Quantum Mechanical Model Chemistry Honors. The Bohr model was inadequate.
Finite Potential Well The potential energy is zero (U(x) = 0) when the particle is 0 < x < L (Region II) The energy has a finite value (U(x) = U) outside.
CHAPTER 5 The Schrodinger Eqn.
Quantum Mechanics.
CHAPTER 5 The Schrodinger Eqn.
Quantum Mechanics.
Atomic Theory.
Quantum Mechanics III Quiz Find solution(s) to the 1-D
 Heisenberg’s Matrix Mechanics Schrödinger’s Wave Mechanics
Quantum Physics Schrödinger
CHAPTER 5 The Schrodinger Eqn.
Quantum Model of the Atom
Elements of Quantum Mechanics
Modern Physics Photoelectric Effect Bohr Model for the Atom
Hydrogen Atom Emission Spectrum
Quantum Mechanics.
The Quantum Mechanical Model
Principles of Quantum Mechanics
Concept test 14.1 Is the function graph d below a possible wavefunction for an electron in a 1-D infinite square well between
Particle in a box Potential problem.
The Schrödinger Equation
CHAPTER 3 PROBLEMS IN ONE DIMENSION Particle in one dimensional box
Photons and Matter Waves
Department of Electronics
Presentation transcript:

Principles of Quantum Mechanics P1) Energy is quantized The photoelectric effect Energy quanta E = h  where h = J-s

Principles of Quantum Mechanics P2) Wave particle duality de Broglie relationparticle double slit experimentwave

Principles of Quantum Mechanics P3) Uncertainty principle position/momentum energy/time where

Principles of Quantum Mechanics Schrodinger’s equation Letting We obtain the time-dependent portion The solution of which is The time-independent portion is

Principles of Quantum Mechanics Physical meaning of wave function The probability density function is where is the complex conjugate of  but Since this is a probability density

Principles of Quantum Mechanics Application 1Electron in Free Space Assuming V(x) = 0 Solution is Adding in the time dependent portion, and setting B=0 where

Principles of Quantum Mechanics Application 2Infinite Potential Well In region II, V = 0, so A solution is where

Principles of Quantum Mechanics Application 2Infinite Potential Well (cont.) Applying boundary and normalization conditions where n = 1,2,3…

Principles of Quantum Mechanics Application 3Potential Barrier Solutions for three regions where

Principles of Quantum Mechanics Application 3Potential Barrier (cont.) Tunneling when E < V 0