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Spin-dependent transport in nanoscal...

Bolotin, Kirill I.

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Spin-dependent transport in nanoscale structures.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Spin-dependent transport in nanoscale structures./
作者:	Bolotin, Kirill I.
面頁冊數:	126 p.
附註:	Source: Dissertation Abstracts International, Volume: 67-11, Section: B, page: 6456.
Contained By:	Dissertation Abstracts International67-11B.
標題:	Physics, Electricity and Magnetism. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3242201
ISBN:	9780542983696

Spin-dependent transport in nanoscale structures.
Bolotin, Kirill I.

Spin-dependent transport in nanoscale structures. - 126 p.

Source: Dissertation Abstracts International, Volume: 67-11, Section: B, page: 6456.

Thesis (Ph.D.)--Cornell University, 2007.

If a metallic particle is sufficiently small (< 15 nm), its discrete spectrum of "electron in a box" states can be resolved by tunnel spectroscopy at low temperatures. We will first discuss a technique that introduces several previously unavailable "knobs" to study the quantum states of an individual nanoparticle: we can control the number of electrons on the particle by using efficient gate electrodes, and the size and composition of the particle using chemical synthesis. In gold nanoparticles we find that quantum states are spin-degenerate and are filled as in a non-interacting model, consistent with weak exchange interactions. The second part of the thesis focuses on developing ferromagnetic contacts to study spin-dependent transport through the nanoparticle. We discuss a technique which allows us to fabricate such contacts with tunable size down to the atomic scale and into the tunneling regime, and to study spin transport in atomically-narrow contacts. We find a large anistropic magnetoresistance contribution in such contacts and interpret it as a consequence of mesoscopic quantum interference.

ISBN: 9780542983696Subjects--Topical Terms:

1019535
Physics, Electricity and Magnetism.

Spin-dependent transport in nanoscale structures.
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245 1 0 $a Spin-dependent transport in nanoscale structures.
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500 $a Source: Dissertation Abstracts International, Volume: 67-11, Section: B, page: 6456.
500 $a Adviser: Daniel C. Ralph.
502 $a Thesis (Ph.D.)--Cornell University, 2007.
520 $a If a metallic particle is sufficiently small (< 15 nm), its discrete spectrum of "electron in a box" states can be resolved by tunnel spectroscopy at low temperatures. We will first discuss a technique that introduces several previously unavailable "knobs" to study the quantum states of an individual nanoparticle: we can control the number of electrons on the particle by using efficient gate electrodes, and the size and composition of the particle using chemical synthesis. In gold nanoparticles we find that quantum states are spin-degenerate and are filled as in a non-interacting model, consistent with weak exchange interactions. The second part of the thesis focuses on developing ferromagnetic contacts to study spin-dependent transport through the nanoparticle. We discuss a technique which allows us to fabricate such contacts with tunable size down to the atomic scale and into the tunneling regime, and to study spin transport in atomically-narrow contacts. We find a large anistropic magnetoresistance contribution in such contacts and interpret it as a consequence of mesoscopic quantum interference.
590 $a School code: 0058.
650 4 $a Physics, Electricity and Magnetism. $3 1019535
650 4 $a Physics, Condensed Matter. $3 1018743
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