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1. |
Record Nr. |
UNISA990003529650203316 |
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Autore |
COTTONE, Elvira |
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Titolo |
Agricoltura: riformismo e lotta di classe : ricerca condotta e redatta da Elvira Cottone / Cottone Elvira |
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Pubbl/distr/stampa |
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Roma : Samonà e Savelli, 1971 |
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Descrizione fisica |
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Collana |
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Disciplina |
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Soggetti |
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Movimento contadino - Storia - Italia - 1950-1970 |
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Collocazione |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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2. |
Record Nr. |
UNINA9910139492503321 |
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Autore |
Ouisse Thierry |
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Titolo |
Electron transport in nanostructures and mesoscopic devices [[electronic resource] /] / Thierry Ouisse |
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Pubbl/distr/stampa |
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London, : ISTE |
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Hoboken, NJ, : Wiley, 2008 |
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ISBN |
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1-282-16520-8 |
9786612165207 |
0-470-61139-1 |
0-470-39400-5 |
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Descrizione fisica |
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1 online resource (399 p.) |
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Collana |
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Classificazione |
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Disciplina |
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Soggetti |
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Electron transport |
Nanostructured materials - Electric properties |
Nanostructures - Electric properties |
Mesoscopic phenomena (Physics) |
Electronic books. |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Electron Transport in Nanostructures and Mesoscopic Devices; Table of Contents; Chapter 1. Introduction; 1.1. Introduction and preliminary warning; 1.2. Bibliography; Chapter 2. Some Useful Concepts and Reminders; 2.1. Quantum mechanics and the Schrödinger equation; 2.1.1. A more than brief introduction; 2.1.2. The postulates of quantum mechanics; 2.1.3. Essential properties of observables; 2.1.4. Momentum operator; 2.1.5. Stationary states; 2.1.6. Probability current; 2.1.7. Electrons in vacuum and group velocity; 2.2. Energy band structure in a periodic lattice |
2.3. Semi-classical approximation2.4. Electrons and holes; 2.5. Semiconductor heterostructure; 2.6. Quantum well; 2.6.1. 1D case; 2.6.2. Coupled quantum wells; 2.6.3. Quantum-confined Stark effect; 2.7. Tight-binding approximation; 2.8. Effective mass approximation; 2.8.1. Wannier functions; 2.8.2. Effective mass Schrödinger equation; 2.9. How good is the effective mass approximation in a confined structure?; 2.10. Density of states; 2.10.1. 3D case; 2.10.2. 2D case; 2.10.3. 1D case; 2.10.4. Summary; 2.11. Fermi-Dirac statistics; 2.12. Examples of 2D systems |
2.13. Characteristic lengths and mesoscopic nature of electron transport2.14. Mobility: Drude model; 2.15. Conduction in degenerate materials; 2.16. Einstein relationship; 2.17. Low magnetic field transport; 2.18. High magnetic field transport; 2.18.1. Introduction; 2.18.2. Some reminders about the particle Hamiltonian in the presence of an electromagnetic field; 2.18.3. Action of a magnetic field (classical); 2.18.4. High magnetic field transport; 2.19. Exercises; 2.19.1. Exercise; 2.19.2. Exercise; 2.19.3. Exercise; 2.19.4. Exercise; 2.20. Bibliography |
Chapter 3. Ballistic Transport and Transmission Conductance3.1. Conductance of a ballistic conductor; 3.2. Connection between 2D and 1D systems; 3.3. A classical analogy; 3.4. Transmission conductance: Landauer's formula; 3.5. What if the device length really does go down to zero?; 3.6. A smart experiment which shows you everything; 3.7. Relationship between the Landauer formula and Ohm's law; 3.8. Dissipation with a scatterer; 3.9. Voltage probe measurements; 3.10. Comment about the assumption that T is constant; 3.11. Generalization of Landauer's formula: Büttiker's formula |
3.11.1. Büttiker's formula3.11.2. Three-terminal device; 3.11.3. Four-terminal device; 3.12. Non-zero temperature; 3.12.1. Large applied bias μ1-μ2>>0; 3.12.2. Incoherent states; 3.12.3. Coherent states; 3.12.4. Physical parameters included in the transmission probability; 3.12.5. Linear response (μ1-μ2<kBT or T(E)=Cst); 3.13. The integer quantum Hall effect; 3.13.1. The experiment; 3.13.2. The explanation; 3.14. Exercises; 3.14.1. Exercise; 3.14.2. Exercise; 3.14.3. Exercise; 3.14.4. Exercise; 3.14.5. Exercise; 3.15. Bibliography; Chapter 4. S-matrix Formalism |
4.1. Scattering matrix or S-matrix |
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Sommario/riassunto |
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This book introduces researchers and students to the physical principles which govern the operation of solid-state devices whose overall length is smaller than the electron mean free path. In quantum systems such as these, electron wave behavior prevails, and transport properties must be assessed by calculating transmission amplitudes |
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rather than microscopic conductivity. Emphasis is placed on detailing the physical laws that apply under these circumstances, and on giving a clear account of the most important phenomena. The coverage is comprehensive, with mathematics and theoretical material s |
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3. |
Record Nr. |
UNINA9910719610603321 |
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Autore |
Burri Sylvain |
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Titolo |
Les savoirs ruraux du Moyen Âge à nos jours / / Jérôme Lamy, Sylvie Vabre |
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Pubbl/distr/stampa |
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Rennes, : Presses universitaires de Rennes, 2023 |
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Rennes : , : Presses universitaires de Rennes, , 2023 |
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ISBN |
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Descrizione fisica |
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1 online resource (420 p.) |
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Altri autori (Persone) |
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CaplatJacques |
ChancellierÉric |
DenisGilles |
DufourJean-Yves |
FollainAntoine |
JaudonBruno |
KnittelFabien |
LamyJérôme |
LembréStéphane |
LevainAlix |
MoriceauJean-Marc |
PortetPierre |
SauzeauThierry |
VabreSylvie |
VallatFrançois |
VérotJean-Baptiste |
VidalDominique |
VigneronFleur |
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Disciplina |
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Soggetti |
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History |
Sociology |
histoire rurale |
savoirs |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Sommario/riassunto |
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« L’histoire se fait avec des documents écrits, sans doute. Quand il y en a. Mais elle peut se faire, elle doit se faire, sans documents écrits s’il n’en existe point. Avec tout ce que l’ingéniosité de l’historien peut lui permettre d’utiliser pour fabriquer son miel, à défaut des fleurs usuelles. Donc avec des mots. Des signes. Des paysages et des tuiles. Des formes de champs et de mauvaises herbes. » Le programme tracé par Lucien Febvre en 1949 a été suivi par les historiens, sociologues, économistes et archéologues rassemblés en cet ouvrage afin de mettre en évidence les traces des savoirs ruraux. De grands mouvements s’esquissent dans cette vaste histoire des connaissances campanaires : du sensible au quantifiable, de la productivité à l’écologie, du quotidien au savant. C’est une autre histoire de la ruralité qui émerge, riche de rationalités pratiques. |
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