The Metal-insulator Transition in GaAs and In0 ̲. ̲53Ga0 ̲.47As PDF Download
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Author: M.C Maliepaard
Publisher:
ISBN:
Category :
Languages : en
Pages : 213
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Author: M.C Maliepaard
Publisher:
ISBN:
Category :
Languages : en
Pages : 213
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Author: Michael Cornelis Maliepaard
Publisher:
ISBN:
Category : Solid state physics
Languages : en
Pages :
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Author: Michael Cornelis Maliepaard
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Xuan Gao
Publisher:
ISBN:
Category :
Languages : en
Pages : 270
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Author: Lei Qiu
Publisher:
ISBN:
Category : Low-dimensional topology
Languages : en
Pages : 106
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Book Description
This thesis consists of four main parts. The first part introduces the history of the concept of a Wigner crystal and recent theoretical developments based on this concept, which mainly raises the idea of having intermediate phases near the boundary of the Wigner crystal-liquid transition. It also briefly introduces another long standing puzzle: 2D zero field metal-insulator transition. The second part studies the solid phase known as the "Wigner crystal" (WC) of two-dimensional holes observed in weak perpendicular magnetic field. Magnetoresistivity and thermodynamic compressibility in several densities and temperatures are measured and discussed. It strongly suggests that the metal-insulator transition should be closely related to the WC-liquid transition since the experimental phase diagram coins with theoretical phase diagram. The third part investigates the phase transition between observed the solid phase and liquid state. A new intermediate phase called a micro-emulsion phase is discovered. Its isotropic feature and response to disorder level are discussed. Finally, the fourth part introduces a new perspective, which is derived from the conclusions of the second and third part, towards the two-decade puzzle named the two dimensional metal-insulator transition (2D MIT). Scaling behavior of resistivity of dilute holes in GaAs quantum well on the insulating side of 2D MIT is found for the first time. Overall, our studies indicate the observation of a new WC phase at low magnetic field. Through studying its transition to liquid state, a new intermediate phase is identified. By applying the new perspective gained, the scaling of resistivity is observed and strongly suggests that the 2D MIT is a quantum phase transition of WC and micro-emulsion phases.
Author: John Charles Reed
Publisher:
ISBN:
Category :
Languages : en
Pages : 296
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Author: Thomas Schäpers
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110639009
Category : Science
Languages : en
Pages : 428
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Book Description
This revised and expanded edition of the first comprehensive introduction to the rapidly-evolving field of spintronics covers ferromagnetism in nano-electrodes, spin injection, spin manipulation, and the practical use of these effects in next-generation electronics. Moreover, the book now also includes spin-based optics, topological materials and insulators, and the quantum spin Hall effect.
Author: Florian Gebhard
Publisher: Springer Tracts in Modern Physics
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 352
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Book Description
The metal-insulator transition due to electron-electron interactions is one of the most celebrated but least understood problems in condensed matter physics. Here this subject is comprehensively reviewed for the first time since Sir Nevill Mott's monograph of 1990. A pedagogical introduction to the basic concepts for the Mott transition, the Hubbard model, and various analytical approaches to correlated electron systems is presented. A new classification scheme for Mott insulators as Mott-Hubbard and Mott-Heisenberg insulators is proposed. Traditional methods are critically examined for their potential to describe the Mott transition. This book will make an excellent reference for scientists researching in the field of electron transport in condensed matter.
Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 826
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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