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Electronic, Spin and Valley Transport in Two Dimensional Dirac Systems.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Electronic, Spin and Valley Transport in Two Dimensional Dirac Systems./
作者:	Xu, Hongya.
面頁冊數:	1 online resource (193 pages)
附註:	Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.
Contained By:	Dissertation Abstracts International78-09B(E).
標題:	Electrical engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9781369732061

Electronic, Spin and Valley Transport in Two Dimensional Dirac Systems.
Xu, Hongya.

Electronic, Spin and Valley Transport in Two Dimensional Dirac Systems. - 1 online resource (193 pages)

Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.

Thesis (Ph.D.)--Arizona State University, 2017.

Includes bibliographical references

This dissertation aims to study and understand relevant issues related to the electronic, spin and valley transport in two-dimensional Dirac systems for different given physical settings. In summary, four key findings are achieved.

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

Mode of access: World Wide Web

ISBN: 9781369732061Subjects--Topical Terms:

596380
Electrical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Electronic, Spin and Valley Transport in Two Dimensional Dirac Systems.
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020 $a 9781369732061
035 $a (MiAaPQ)AAI10269626
035 $a (MiAaPQ)asu:16734
035 $a AAI10269626
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Xu, Hongya. $3 1194174
245 1 0 $a Electronic, Spin and Valley Transport in Two Dimensional Dirac Systems.
264 0 $c 2017
300 $a 1 online resource (193 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: 78-09(E), Section: B.
500 $a Adviser: Ying-Cheng Lai.
502 $a Thesis (Ph.D.)--Arizona State University, 2017.
504 $a Includes bibliographical references
520 $a This dissertation aims to study and understand relevant issues related to the electronic, spin and valley transport in two-dimensional Dirac systems for different given physical settings. In summary, four key findings are achieved.
520 $a First, studying persistent currents in confined chaotic Dirac fermion systems with a ring geometry and an applied Aharonov-Bohm flux, unusual whispering-gallery modes with edge-dependent currents and spin polarization are identified. They can survive for highly asymmetric rings that host fully developed classical chaos. By sustaining robust persistent currents, these modes can be utilized to form a robust relativistic quantum two-level system.
520 $a Second, the quantized topological edge states in confined massive Dirac fermion systems exhibiting a remarkable reverse Stark effect in response to an applied electric field, and an electrically or optically controllable spin switching behavior are uncovered.
520 $a Third, novel wave scattering and transport in Dirac-like pseudospin-1 systems are reported. (a), for small scatterer size, a surprising revival resonant scattering with a peculiar boundary trapping by forming unusual vortices is uncovered. Intriguingly, it can persist in arbitrarily weak scatterer strength regime, which underlies a superscattering behavior beyond the conventional scenario. (b), for larger size, a perfect caustic phenomenon arises as a manifestation of the super-Klein tunneling effect. (c), in the far-field, an unexpected isotropic transport emerges at low energies.
520 $a Fourth, a geometric valley Hall effect (gVHE) originated from fractional singular Berry flux is revealed. It is shown that gVHE possesses a nonlinear dependence on the Berry flux with asymmetrical resonance features and can be considerably enhanced by electrically controllable resonant valley skew scattering. With the gVHE, efficient valley filtering can arise and these phenomena are robust against thermal fluctuations and disorder averaging.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Electrical engineering. $3 596380
650 4 $a Quantum physics. $3 1179090
650 4 $a Condensed matter physics. $3 1148471
655 7 $a Electronic books. $2 local $3 554714
690 $a 0544
690 $a 0599
690 $a 0611
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Arizona State University. $b Electrical Engineering. $3 845389
773 0 $t Dissertation Abstracts International $g 78-09B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10269626 $z click for full text (PQDT)