Crossover from tunneling to incoherent (bulk) transport in a correlated nanostructure

被引：9

作者：

Freericks, JK ^{[1
]}

机构：

[1] Georgetown Univ, Dept Phys, Washington, DC 20057 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 08期

关键词：

D O I：

10.1063/1.1650872

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We calculate the junction resistance for a metal-barrier-metal device with the barrier tuned to lie just on the insulating side of the metal-insulator transition. We find that the crossover from tunneling behavior in thin barriers at low temperature to incoherent transport in thick barriers at higher temperature is governed by a generalized Thouless energy. The crossover temperature can be estimated from the low-temperature resistance of the device and the bulk density of states of the barrier. (C) 2004 American Institute of Physics.

引用

页码：1383 / 1385

页数：3

共 26 条

[1] Tunneling criteria for magnetic-insulator-magnetic structures [J].

Åkerman, JJ ;

Slaughter, JM ;

Dave, RW ;

Schuller, IK .

APPLIED PHYSICS LETTERS, 2001, 79 (19) :3104-3106

[2]

ATLAND A, 1996, PHYS REV LETT, V76, P1130

[3] Magnetic tunnel junction performance versus barrier thickness:: NiFe/AlOx/NiFe junctions fabricated from a wedged Al layer [J].

Covington, M ;

Nowak, J ;

Song, D .

APPLIED PHYSICS LETTERS, 2000, 76 (26) :3965-3967

[4] The use of Simmons' equation to quantify the insulating barrier parameters in Al/AlOx/Al tunnel junctions [J].

Dorneles, LS ;

Schaefer, DM ;

Carara, M ;

Schelp, LF .

APPLIED PHYSICS LETTERS, 2003, 82 (17) :2832-2834

[5] HIGH-TEMPERATURE SUPERCONDUCTING MULTILAYERS AND HETEROSTRUCTURES GROWN BY ATOMIC LAYER-BY-LAYER MOLECULAR-BEAM EPITAXY [J].

ECKSTEIN, JN ;

BOZOVIC, I .

ANNUAL REVIEW OF MATERIALS SCIENCE, 1995, 25 :679-709

[6] NUMERICAL STUDIES OF LOCALIZATION IN DISORDERED SYSTEMS [J].

EDWARDS, JT ;

THOULESS, DJ .

JOURNAL OF PHYSICS PART C SOLID STATE PHYSICS, 1972, 5 (08) :807-&

[7] SIMPLE MODEL FOR SEMICONDUCTOR-METAL TRANSITIONS - SMB6 AND TRANSITION-METAL OXIDES [J].

FALICOV, LM ;

KIMBALL, JC .

PHYSICAL REVIEW LETTERS, 1969, 22 (19) :997-&

[8] Tuning a Josephson junction through a quantum critical point (vol B 64, art no 054511, 2001) [J].

Freericks, JK ;

Nikolic, BK ;

Miller, P .

PHYSICAL REVIEW B, 2003, 68 (09)

[9] Optimizing the speed of a Josephson junction with dynamical mean field theory [J].

Freericks, JK ;

Nikolic, BK ;

Miller, P .

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2002, 16 (04) :531-561

[10] Tuning a Josephson junction through a quantum critical point [J].

Freericks, JK ;

Nikolic, BK ;

Miller, P .

PHYSICAL REVIEW B, 2001, 64 (05)

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