Colossal magnetoresistance and phase separation in magnetic semiconductors:
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| Main Author: | |
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| Format: | Book |
| Language: | English |
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London
Imperial College Press
2002
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| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | XVI, 457 S. graph. Darst. |
| ISBN: | 1860942954 |
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| 245 | 1 | 0 | |a Colossal magnetoresistance and phase separation in magnetic semiconductors |c Eduard L. Nagaev |
| 264 | 1 | |a London |b Imperial College Press |c 2002 | |
| 300 | |a XVI, 457 S. |b graph. Darst. | ||
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| adam_text | COLOSSAL MAGNETORESISTANCE AND PHASE SEPARATION IN MAGNETIC
SEMICONDUCTORS EDUARD L NAGAEV INSTITUTE OF RADIOENGINEERING AND
ELECTRONICS RUSSIAN ACADEMY OF SCIENCES, MOSCOW IMPERIAL COLLEGE PRESS
CONTENTS APPRECIATION V PREFACE VII CHAPTER 1 INTRODUCTION AND NECESSARY
INFORMATION ABOUT NON-MAGNETIC SEMICONDUCTORS AND INSULATING MAGNETIC
SYSTEMS 1 1.1. INTRODUCTION 1 1.1.1. COLOSSAL MAGNETORESISTANCE AGAINST
GIANT MAGNETORESISTANCE 1 1.1.2. COLOSSAL MAGNETORESISTANCE MATERIALS
AND OTHER MAGNETIC SEMICONDUCTORS 2 1.1.3. MAGNETIC SEMICONDUCTORS AS
STRONGLY CORRELATED ELECTRON SYSTEMS. THE SIMPLE AND DOUBLE EXCHANGE 4
1.1.4. FROM ANTIFERROMAGNETIC SEMICONDUCTORS TO FERROMAGNETIC
SEMICONDUCTORS: PHASE SEPARATION 8 1.1.5. THE MAGNETOIMPURITY THEORY FOR
THE COLOSSAL MAGNETORESISTANCE OF FERROMAGNETIC SEMICONDUCTORS 11 1.1.6.
THE RESISTIVITY PEAK AND COLOSSAL MAGNETORESISTANCE IN THE MANGANITES 15
1.2. SOME BASIC NOTIONS OF SEMICONDUCTOR PHYSICS 19 1.2.1. THE
SINGLE-ELECTRON APPROACH 19 1.2.2. POLARONS 23 1.2.3. MOTT
DELOCALISATION OF CHARGE CARRIERS 30 XI XII CONTENTS 1.2.4. DEGENERATE
SEMICONDUCTORS 33 1.3. SOME BASIC NOTIONS OF THE PHYSICS OF MAGNETIC
PHENOMENA 38 1.3.1. MAGNETIC HAMILTONIANS FOR ORBITALLY NON- DEGENERATE
AND JAHN-TELLER INSULATING SYSTEMS 38 1.3.2. PROPERTIES OF FERROMAGNETS
43 1.3.3. COLLINEAR AND CANTED ANTIFERROMAGNETIC SYSTEMS 49 1.3.4.
ANTIFERROMAGNETIC SYSTEMS IN MAGNETIC FIELD. METAMAGNETISM AND
ANTIMETAMAGNETISM 53 CHAPTER 2 PRINCIPLES OF THEORY OF CONDUCTING
MAGNETIC SYSTEMS 59 2.1. MAGNETIC HAMILTONIANS OF CONDUCTING MAGNETIC
SYSTEMS 59 2.2. EFFECT OF MAGNETIC ORDERING ON ENERGY OF CHARGE CARRIERS
64 2.3. DOUBLE EXCHANGE 68 2.3.1. CLASSICAL SPINS 68 2.3.2. QUANTUM
SPINS 72 2.4. RKKY INDIRECT EXCHANGE 76 2.5. NON-HEISENBERG EXCHANGE IN
MAGNETIC SEMICONDUCTORS 79 CHAPTER 3 NON-DEGENERATE FERROMAGNETIC
SEMICONDUCTORS 85 3.1. EXPERIMENTAL DATA . 85 3.1.1. MAGNETIC AND
CRYSTALLOGRAPHIC PROPERTIES 85 3.1.2. OPTICAL PROPERTIES 88 3.1.3.
CONDUCTIVITY AND COLOSSAL MAGNETORESISTANCE 95 3.2. THEORY: FREE CHARGE
CARRIER ENERGY SPECTRUM AND GIANT OPTICAL RED SHIFT 101 3.2.1. SPIN WAVE
REGION 101 3.2.2. THE VICINITY OF THE CURIE POINT AND THE PARAMAGNETIC
REGION (SIMPLE EXCHANGE) 107 COLOSSAL MAGNETORESISTANCE AND PHASE
SEPARATION XIII 3.2.3. THE VICINITY OF THE CURIE POINT AND THE
PARAMAGNETIC REGION (DOUBLE EXCHANGE) 115 3.3. MAGNETOIMPURITY THEORY OF
NON-DEGENERATE FERROMAGNETIC SEMICONDUCTORS 118 3.3.1. PHYSICAL
BACKGROUNDS 118 3.3.2. THERMODYNAMICAL DEDUCTION OF THE TEMPERATURE
DEPENDENT ENERGY SPECTRUM FOR CONDUCTION ELECTRONS 120 3.3.3. THE
RESISTIVITY PEAK AND COLOSSAL MAGNETORESISTANCE.... 122 3.3.4.
SCATTERING OF CHARGE CARRIERS 127 3.3.5. THE RESISTIVITY PEAK AT CHARGE
CARRIER HOPPING MOTION 129 CHAPTER 4 NON-DEGENERATE ANTIFERROMAGNETIC
SEMICONDUCTORS AND SELF-TRAPPED STATES 133 4.1. EXPERIMENTAL DATA 133
4.1.1. MAGNETIC AND CRYSTALLOGRAPHIC PROPERTIES 133 4.1.2. OPTICAL AND
ELECTRICAL PROPERTIES 137 4.2. ELECTRON ENERGIES IN UNIFORM
TWO-SUBLATTICE STRUCTURES. MAGNETIC STRINGS 142 4.2.1. DELOCALISED
STATES 142 4.2.2. MAGNETIC STRINGS 145 4.3. FERRONS . 151 4.3.1.
FERRONS IN A PERFECT CRYSTAL WITH SIMPLE EXCHANGE 152 4.3.2. FERRONS IN
MAGNETIC FIELD AND FINITE TEMPERATURES AND EXPERIMENTAL PROOF OF THEIR
EXISTENCE 158 4.3.3. FERRON AND FERRON-STRING STATES IN PERFECT CRYSTALS
WITH DOUBLE EXCHANGE 162 4.3.4. MAGNETIC SELF-TRAPPED STATES IN OTHER
SYSTEMS 167 4.4. MAGNETOIMPURITY THEORY OF NON-DEGENERATE
ANTIFERROMAGNETIC AND PARAMAGNETIC SEMICONDUCTORS 174 4.4.1. BOUND
FERRONS IN ANTIFERROMAGNETIC SEMICONDUCTORS.... 175 XIV CONTENTS 4.4.2.
BOUND FERRONS IN THE PARAMAGNETIC REGION 180 4.4.3. THE INTERFERENCE
FERROMAGNETISM AND OTHER MAGNETIC AND ELECTRICAL PROPERTIES OF NON-
DEGENERATE ANTIFERROMAGNETIC SEMICONDUCTORS 183 CHAPTER 5 DEGENERATE
FERROMAGNETIC SEMICONDUCTORS 189 5.1. MAGNETIC PROPERTIES 189 5.2.
RESISTIVITY AND MAGNETORESISTANCE OF DEGENERATE FERROMAGNETIC
SEMICONDUCTORS 197 5.3. MAGNETOIMPURITY THEORY OF RESISTIVITY PEAK AND
COLOSSAL MAGNETORESISTANCE 201 5.3.1. PHYSICAL BACKGROUND FOR THE
RESISTIVITY PEAK AND CMR 201 5.3.2. DIELECTRIC AND MAGNETOELECTRIC
RESPONSE FUNCTIONS FOR SIMPLEST MAGNETISED SYSTEMS 204 5.3.3.
PARAMAGNETIC REGION 211 5.3.4. MAGNETOELECTRIC RESPONSE FUNCTIONS FOR
THE DOUBLE EXCHANGE 214 5.3.5. MAGNETOIMPURITY RESISTIVITY AND COLOSSAL
MAGNETORESISTANCE 215 5.3.6. RE-ENTRANT OR NON-RE-ENTRANT
TEMPERATURE-INDUCED MOTT TRANSITION? 219 5.4. OXYGEN OFF-STOICHIOMETRY
INSULATOR-TO-METAL TRANSITION AND ISOTOPE EFFECTS IN DEGENERATE
SEMICONDUCTORS 226 5.5. THE INVERSE MAGNETOELECTRIC EFFECT AND
MAGNETOELECTRIC WAVES 233 5.6. SURFACE MAGNETOELECTRIC EFFECTS 236
CHAPTER 6 DEGENERATE ANTIFERROMAGNETIC SEMICONDUCTORS AND PHASE
SEPARATION 243 6.1. INSTABILITY RANGE OF COLLINEAR MAGNETIC STRUCTURES
243 6.2. INSTABILITY OF CANTED ANTIFERROMAGNETIC ORDERING 252 COLOSSAL
MAGNETORESISTANCE AND PHASE SEPARATION XV 6.3. ELECTRON-MAGNETIC PHASE
SEPARATION 256 6.3.1. GENERAL PICTURE 256 6.3.2. BASIC EQUATIONS FOR THE
DROPLET MODEL 260 6.3.3. PHASE TRANSITIONS IN THE DROPLET MODEL 266
6.3.4. PHASE SEPARATION IN THE LAYERED (SLAB) MODEL 271 6.3.5. THE ROLE
OF THE ELECTRON-LATTICE INTERACTION 272 6.3.6. EXPERIMENTAL CONFIRMATION
OF THE PHASE SEPARATION 277 6.4. MAGNETIC-IMPURITY PHASE SEPARATION 291
CHAPTER 7 LANTHANUM MANGANITES 297 7.1. CRYSTALLOGRAPHIC PROPERTIES OF
UNDOPED LANTHANUM MANGANITES 297 7.2. MAGNETIC PROPERTIES OF MANGANITES
306 7.2.1. UNDOPED LAMNO 3 306 7.2.2. FERROMAGNETIC MANGANITES 308
7.2.3. THE NON-UNIFORMITY OF MAGNETIC STATES CLOSE OR ABOVE THE CURIE
POINT 316 7.3. NON-UNIFORM STATES INTERMEDIATE BETWEEN FERROMAGNETIC AND
ANTIFERROMAGNETIC..... 319 7.3.1. BOUND FERRONS -.-:. 321 7.3.2. PHASE
SEPARATION AND BOUND FERRON FERROMAGNETISM 323 7.4. OVERDOPED SAMPLES:
CHARGE ORDERING AND STRIPES 333 7.5. UNDERDOPED SAMPLES: CHARGE ORDERING
AND THE PROBLEM OF AN INSULATING FERROMAGNETIC STATE 339 7.6. TRANSPORT
AND MAGNETOTRANSPORT PROPERTIES OF THE LA MANGANITES 344 7.6.1. THE
RESISTIVITY PEAK IN THE VICINITY OF T C 344 7.6.2. NEGATIVE ISOTROPIC
COLOSSAL MAGNETORESISTANCE 348 7.6.3. HALL EFFECT AND THERMOPOWER 351
7.6.4. CHARGE CARRIER NATURE 356 XVI CONTENTS CHAPTER 8 OTHER MANGANITES
359 8.1. PR-BASED MANGANITES 359 8.2. ND-BASED AND LESS COMMON
MANGANITES 367 8.3. LAYERED MAGNETIC MANGANITES 373 8.3.1. GENERAL
INFORMATION 373 8.3.2. MAGNETIC STRUCTURES 375 8.3.3. CHARGE TRANSPORT
AND ITS REALATIONSHIP WITH MAGNETIC PROPERTIES 378 8.3.4.
MAGNETORESISTANCE AND RELATED EFFECTS 381 CHAPTER 9 SPECIFIC EFFECTS AND
THEORY OF MANGANITES 385 9.1. PHOTOINDUCED INSULATOR-METAL TRANSITION IN
MANGANITES 385 9.2. THE OXYGEN ISOTOPE EFFECT IN THE MANGANITES 389 9.3.
THEORIES OF MANGANITES 398 9.3.1. THE GROUND STATE OF UNDOPED MANGANITES
398 9.3.2. THE MAGNETOIMPURITY THEORY APPLIED TO THE TRANSPORT
PROPERTIES OF DOPED LA-BASED MANGANITES ..... 401 9.3.3. JAHN-TELLER
APPROACH FOR THE RESISTIVITY PEAK 405 9.3.4. THE PROBLEM OF THE
EXPERIMENTAL VERIFICATION OF THE ROLE OF THE JAHN-TELLER PHONON COUPLING
409 9.3.5. MAGNETIC AND ORBITAL ORDERING 414 9.3.6. NON-UNIFORM STATES:
CHARGE ORDERING AND PHASE SEPARATION 415 9.3.7. METAMAGNETIC
METAL-INSULATOR TRANSITIONS 419 9.3.8. PROBLEMS OF PHYSICS OF THE
MANGANITES 423 APPENDIX A DOUBLE EXCHANGE HAMILTONIAN FOR QUANTUM SPINS
425 BIBLIOGRAPHY 431 INDEX 455
|
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| indexdate | 2024-07-09T19:05:46Z |
| institution | BVB |
| isbn | 1860942954 |
| language | English |
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| physical | XVI, 457 S. graph. Darst. |
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| spelling | Nagaev, Eduard L. Verfasser aut Colossal magnetoresistance and phase separation in magnetic semiconductors Eduard L. Nagaev London Imperial College Press 2002 XVI, 457 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Magnetic semiconductors Magnetoresistance Manganite Riesenmagnetowiderstand (DE-588)4591272-5 gnd rswk-swf Magnetischer Halbleiter (DE-588)4168571-4 gnd rswk-swf Magnetischer Halbleiter (DE-588)4168571-4 s Riesenmagnetowiderstand (DE-588)4591272-5 s DE-604 GBV Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009990870&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Nagaev, Eduard L. Colossal magnetoresistance and phase separation in magnetic semiconductors Magnetic semiconductors Magnetoresistance Manganite Riesenmagnetowiderstand (DE-588)4591272-5 gnd Magnetischer Halbleiter (DE-588)4168571-4 gnd |
| subject_GND | (DE-588)4591272-5 (DE-588)4168571-4 |
| title | Colossal magnetoresistance and phase separation in magnetic semiconductors |
| title_auth | Colossal magnetoresistance and phase separation in magnetic semiconductors |
| title_exact_search | Colossal magnetoresistance and phase separation in magnetic semiconductors |
| title_full | Colossal magnetoresistance and phase separation in magnetic semiconductors Eduard L. Nagaev |
| title_fullStr | Colossal magnetoresistance and phase separation in magnetic semiconductors Eduard L. Nagaev |
| title_full_unstemmed | Colossal magnetoresistance and phase separation in magnetic semiconductors Eduard L. Nagaev |
| title_short | Colossal magnetoresistance and phase separation in magnetic semiconductors |
| title_sort | colossal magnetoresistance and phase separation in magnetic semiconductors |
| topic | Magnetic semiconductors Magnetoresistance Manganite Riesenmagnetowiderstand (DE-588)4591272-5 gnd Magnetischer Halbleiter (DE-588)4168571-4 gnd |
| topic_facet | Magnetic semiconductors Magnetoresistance Manganite Riesenmagnetowiderstand Magnetischer Halbleiter |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009990870&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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