The Metal-Insulator Transition

Slides:

Advertisements

Similar presentations

Transferring Thermal Energy

Advertisements

Department of Physics University of Toronto Low Temperature Thermal Transport Across the Cuprate Phase Diagram Mike Sutherland Louis Taillefer Rob Hill.

Physics 2102 Lecture 4 Gauss’ Law II Physics 2102 Jonathan Dowling Carl Friedrich Gauss Version: 1/23/07 Flux Capacitor (Operational)

 What physical property means a resistance to flow?

Maxwell’s Equations in Matter Free current density from unbound conduction electrons (metals) Polarisation current density from oscillation of charges.

A Charged, Thin Sheet of Insulating Material

If I put no excess charge on the conductor, the net charge on its inner surface will be: a] 0 b] +Q c] -Q d] -2Q e] cannot determine.

B.Spivak with A. Zuyzin Quantum (T=0) superconductor-metal? (insulator?) transitions.

1 Chapter 27 Current and Resistance. 2 Electric Current Electric current is the rate of flow of charge through some region of space The SI unit of current.

Semiconductors n D*n If T>0

Dr. Jie ZouPHY Chapter 43 Molecules and Solids.

Phase Difference = Phase Difference = 0.05.

Superconductor Ceramics

Disorder and chaos in quantum system: Anderson localization and its generalization (6 lectures) Boris Altshuler (Columbia) Igor Aleiner (Columbia)

Chapter 24 Electric Current. The electric current I is the rate of flow of charge through some region of space The SI unit of current is Ampere (A): 1.

Superglasses and the nature of disorder-induced SI transition

Electrical Energy and Capacitance. Electrical Potential Energy Potential energy associated with the electrical force between two charges Form of mechanical.

How does Superconductivity Work? Thomas A. Maier.

Chapter 27 Current and Resistance. Electric Current The electric current I is the rate of flow of charge through some region of space The SI unit of current.

Quantum Confinement in Nanostructures Confined in: 1 Direction: Quantum well (thin film) Two-dimensional electrons 2 Directions: Quantum wire One-dimensional.

Dirty Metals and Mott’s minimum metallic conductivity.

Interference patterns occur when waves from different sources arrive at the same point—at the same time Interference.

P1. Which equation can be used to get the continuity equation from Maxwell’s eqns? a) 3 b) 4 c) 5 d) 6 e)7.

Magnon Another Carrier of Thermal Conductivity

Magnetic Moments in Amorphous Semiconductors Frances Hellman, University of California, Berkeley, DMR This project looks at the effect of magnetic.

“Granular metals and superconductors” M. V. Feigel’man (L.D.Landau Institute, Moscow) ICTS Condensed matter theory school, Mahabaleshwar, India, Dec.2009.

Current, Resistance, and Electromotive Force

Energy Gaps Insulators & Superconductors When does an energy or band gap lead to insulating behavior? Band gap insulators, Peierls’ insulators When does.

Chapter 7 in the textbook Introduction and Survey Current density:

DIRECT OBSERVATION OF JOSEPHSON VORTICES

MOS Capacitor Lecture #5. Transistor Voltage controlled switch or amplifier : control the output by the input to achieve switch or amplifier Two types.

Energy Bands and Charge Carriers in Semiconductors

New Materials and topological phases

DC Sputtering Disadvantage #1 Low secondary electron yield

Superconductor Ceramics

From: Nanoscale Heat Conduction Across Metal-Dielectric Interfaces

Toward a Holographic Model of d-wave Superconductors

Nathan Finney Michael Gammon Newell Jensen

Revision CHAPTER 6.

Physics 2102 Lecture: 06 MON 26 JAN 08

Hybrid 2D-Ferroelectric Structures for Information Technology

Unit-4 Antenna Measurements and Antennas for Mobile Applications

Topological Phase transitions and Topological phases of matter

Continuity equation Physical meaning.

Modelling & Simulation of Semiconductor Devices

Solid Solution Thermal Equilibrium Diagram

Giant Superconducting Proximity Effect in Composite Systems Chun Chen and Yan Chen Dept. of Physics and Lab of Advanced Materials, Fudan University,

Electrical Properties of Materials

Nat. Rev. Urol. doi: /nrurol

مراجعة عامة.

Vocabulary Week 4.

Applications 14.

Basics of Electronics Conductors: have low resistance which allows electrical current flow easily. Insulators: have high resistance which suppresses electrical.

Notes: problem with illustrating gauss’ law and polarization divergence is that this is valid for continuous functions, and we cant illustrate that well.

MOS Capacitor Basics Metal SiO2

ATOMIC STRUCTURE Central cell of the Al-SiO2-nSi atomic structure. This cell is connected to Al atomic planes extending to to the left, and n-Si atomic.

Phase diagram of s-wave SC Introduction

Ehud Altman Anatoli Polkovnikov Bertrand Halperin Mikhail Lukin

Superconductivity Res. T

Electrical and Electronics Engineering Materials

Temperature Chapter 10 Section 1.

Electric Forces and Fields Pgs

Изразеното в настоящата презентация мнение обвързва единствено автора и не представлява официално становище на Комисията за финансов надзор Данил Джоргов.

Sound shadow effect Depends on the size of the obstructing object and the wavelength of the sound. If comparable: Then sound shadow occurs. I:\users\mnshriv\3032.

Coordination # = 8 2 Particles per Unit Cell Body-Centered Cubic

Exotic magnetic states in two-dimensional organic superconductors

Unit 4 - Energy Learning Target 4.5 – Understand & describe wave interference (constructive & destructive).

Deformation of the Fermi surface in the

Presentation transcript:

The Metal-Insulator Transition

3 dimensional M-I transition

Tunneling Density of States Tunneling into amorphous Nb(1-x)Si(x) With increasing x, system goes through the metal-insulator transition

Conductivity and Density of States

H-field dependence near M-I transition (amorphous Gd-Si)

Gd-Si Alloys (amorphous)

Tunneling Density of States

Composite tunneling spectra

Conductivity and Tunneling Zero Bias Conductance

Superconducting-Insulating Transition Superconducting wave function y=y0eif yo = amplitude f= phase