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Effective Models for Optical Properties : = A Study on 1D, 2D, and 3D Materials.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Effective Models for Optical Properties :/
Reminder of title:	A Study on 1D, 2D, and 3D Materials.
Author:	Salazar Gonzalez, Juan Cuauhtemoc.
Description:	1 online resource (143 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 79-08(E), Section: B.
Contained By:	Dissertation Abstracts International79-08B(E).
Subject:	Physics. -
Online resource:	click for full text (PQDT)
ISBN:	9780355803662

Effective Models for Optical Properties : = A Study on 1D, 2D, and 3D Materials.
Salazar Gonzalez, Juan Cuauhtemoc.

Effective Models for Optical Properties :A Study on 1D, 2D, and 3D Materials. - 1 online resource (143 pages)

Source: Dissertation Abstracts International, Volume: 79-08(E), Section: B.

Thesis (Ph.D.)

Includes bibliographical references

In this thesis I employ effective Hamiltonian models to study the electronic structure of materials. With these models I study charge- and spin-injection induced by optical absorption processes, and current-injection induced by quantum interference processes between different orders of absorption. I study the optical response of narrow stripes (''nanoribbons'') of monolayer graphene, monolayers of tin atoms (''stanene''), and alloys of AlGaAs.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355803662Subjects--Topical Terms:

564049
Physics.
Index Terms--Genre/Form:

554714
Electronic books.

Effective Models for Optical Properties : = A Study on 1D, 2D, and 3D Materials.
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040 $a MiAaPQ $b eng $c MiAaPQ
099 $a TUL $f hyy $c available through World Wide Web
100 1 $a Salazar Gonzalez, Juan Cuauhtemoc. $3 1182570
245 1 0 $a Effective Models for Optical Properties : $b A Study on 1D, 2D, and 3D Materials.
264 0 $c 2018
300 $a 1 online resource (143 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertation Abstracts International, Volume: 79-08(E), Section: B.
500 $a Adviser: John E. Sipe.
502 $a Thesis (Ph.D.) $c University of Toronto (Canada) $d 2018.
504 $a Includes bibliographical references
520 $a In this thesis I employ effective Hamiltonian models to study the electronic structure of materials. With these models I study charge- and spin-injection induced by optical absorption processes, and current-injection induced by quantum interference processes between different orders of absorption. I study the optical response of narrow stripes (''nanoribbons'') of monolayer graphene, monolayers of tin atoms (''stanene''), and alloys of AlGaAs.
520 $a First I focus on graphene nanoribbons with zigzag shapes along their lengths, along which strongly localized (''edge'') states exist at the Fermi level of undoped samples. I present results for different chemical potentials, showing that edge states are responsible for the main contribution to the optical response at low photon energies (<1 eV).
520 $a Next, I study stanene, a monolayer of tin atoms arranged in a buckled honeycomb lattice with Dirac-like cones in its bandstructure. The spin-orbit coupling in stanene is significant and leads to a small band gap opening of about 90~meV. I present a scheme to extract an effective Hamiltonian model starting from an ab-initio calculation. I keep track of the quality of the approximations by a careful analysis of the electronic energies and the states obtained with this effective model. Using this model I study the one- and two-photon absorption, and spin-injection by circularly polarized light.
520 $a Finally, I investigate the optical coherent control of charge currents by two- and three-photon absorption (''2+3'') processes in alloys of Al alphaGa1--alphaAs. An important feature of this material is that its electronic bandstructure can be tailored to photon energies of interest. Compared to lower orders of interference, such as the 1+2 scheme, in 2+3 coherent control the laser intensities required for maximal effects are larger, but the optical response is richer, the number of optical coefficients is larger, the interference processes occur in smaller regions in the Brillouin zone, and the electronic swarm velocities are higher.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Physics. $3 564049
650 4 $a Condensed matter physics. $3 1148471
650 4 $a Materials science. $3 557839
655 7 $a Electronic books. $2 local $3 554714
690 $a 0605
690 $a 0611
690 $a 0794
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a University of Toronto (Canada). $b Physics. $3 1182571
773 0 $t Dissertation Abstracts International $g 79-08B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10742581 $z click for full text (PQDT)