國立高雄大學圖資館 |

Language: English

Back

Coulomb drag near the metal-insulato...

Pillarisetty, Ravi.

Coulomb drag near the metal-insulator transition in two-dimensions.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Coulomb drag near the metal-insulator transition in two-dimensions.
Author:	Pillarisetty, Ravi.
Description:	154 p.
Notes:	Adviser: Daniel Tsui.
Notes:	Source: Dissertation Abstracts International, Volume: 66-05, Section: B, page: 2644.
Contained By:	Dissertation Abstracts International66-05B.
Subject:	Physics, Condensed Matter.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3175871
ISBN:	9780542138980

Coulomb drag near the metal-insulator transition in two-dimensions.
Pillarisetty, Ravi.

Coulomb drag near the metal-insulator transition in two-dimensions. - 154 p.

Adviser: Daniel Tsui.

Thesis (Ph.D.)--Princeton University, 2005.

Although the drag results presented in this thesis are highly anomalous, we find that they exhibit striking qualitative and quantitative similarities to the metal-insulator transition anomalies found in the single layer resistivity. We conclude by discussing both Fermi liquid and non-Fermi liquid based theoretical studies attempting to explain these results.

ISBN: 9780542138980Subjects--Topical Terms:

226939
Physics, Condensed Matter.

Coulomb drag near the metal-insulator transition in two-dimensions.
LDR:03364nmm _2200301 _450 001 170687
005 20061228142219.5
008 090528s2005 eng d
020 $a 9780542138980
035 $a 00242717
040 $a UnM $c UnM
100 0 $a Pillarisetty, Ravi. $3 244715
245 1 0 $a Coulomb drag near the metal-insulator transition in two-dimensions.
300 $a 154 p.
500 $a Adviser: Daniel Tsui.
500 $a Source: Dissertation Abstracts International, Volume: 66-05, Section: B, page: 2644.
502 $a Thesis (Ph.D.)--Princeton University, 2005.
520 # $a Although the drag results presented in this thesis are highly anomalous, we find that they exhibit striking qualitative and quantitative similarities to the metal-insulator transition anomalies found in the single layer resistivity. We conclude by discussing both Fermi liquid and non-Fermi liquid based theoretical studies attempting to explain these results.
520 # $a At zero magnetic field, we find that the drag resistivity exhibits a two to three orders of magnitude enhancement over that expected from Boltzmann theory and the corresponding low density electron results. Furthermore, the temperature dependence of the drag exhibits significant deviations from the T2 dependence expected from Fermi liquid theory, which correlate with the anomalous metallic temperature dependence in the single layer resistivity. We show that these anomalous results are not consistent with previously studied drag mechanisms but rather arise from a novel mechanism related to the large rs value of the system.
520 # $a This thesis presents the results of a detailed experimental study of the Coulomb drag effect in dilute double layer two-dimensional hole systems, with rs ranging from roughly 10 to 20. The drag technique provides an extremely powerful probe of carrier interaction, as it directly measures the interlayer carrier-carrier scattering rate in a double layer system. We accompany these drag measurements with the corresponding single layer transport data. The resistivity of the individual layers exhibits an anomalous metallic temperature dependence and in-plane magnetoresistance, as is typically observed in dilute 2D systems near the metal-insulator transition.
520 # $a We have also performed studies in the presence of an in-plane magnetic field, to investigate the effect of spin polarization on the drag in this regime. Strikingly, we find that both the drag and single layer resistivities exhibit the same qualitative dependence on B||, with both showing similar features associated with spin polarization. Furthermore, we find that the temperature exponent of the drag exhibits an unusual dependence upon spin polarization. Near the metal-insulator transition.
520 # $a the temperature dependence of the drag, given by T alpha weakens significantly with the application of an in-plane magnetic field, with alpha saturating at half its zero field value for B|| > B*, where B* is the polarization field.
590 $a School code: 0181.
650 # 0 $a Physics, Condensed Matter. $3 226939
690 $a 0611
710 0 # $a Princeton University. $3 212488
773 0 # $g 66-05B. $t Dissertation Abstracts International
790 $a 0181
790 1 0 $a Tsui, Daniel, $e advisor
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://libsw.nuk.edu.tw:81/login?url=http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3175871 $z http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3175871