Quantum phase transition in coupled quantum dots

被引：31

作者：

Andrei, N ^{[1
]}

Zimányi, GT

Schön, G

机构：

[1] Rutgers State Univ, Dept Phys, Piscataway, NJ 08855 USA

[2] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

[3] Univ Karlsruhe, Inst Theoret Festkorperphys, D-76128 Karlsruhe, Germany

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.60.R5125

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study two quantum dots in the limit of strong dot-lead coupling and weak dot-dot tunneling. The model maps on Ising-coupled Kondo impurities. We argue that a new quantum critical fixed point exists at an intermediate value of the mutual capacitance, supporting non-Fermi-liquid behavior. We construct the total conductance across the double dot structure. It exhibits a strongly peaked behavior as a function of the mutual capacitance, gate voltage, and temperature. [S0163-1829(99)50632-2].

引用

页码：R5125 / R5128

页数：4

共 28 条

[1] CONFORMAL-FIELD-THEORY APPROACH TO THE 2-IMPURITY KONDO PROBLEM - COMPARISON WITH NUMERICAL RENORMALIZATION-GROUP RESULTS [J].

AFFLECK, I ;

LUDWIG, AWW ;

JONES, BA .

PHYSICAL REVIEW B, 1995, 52 (13) :9528-9546

[2]

Averin D. V., 1991, MESOSCOPIC PHENOMENA

[3] VIRTUAL ELECTRON-DIFFUSION DURING QUANTUM TUNNELING OF THE ELECTRIC CHARGE [J].

AVERIN, DV ;

NAZAROV, YV .

PHYSICAL REVIEW LETTERS, 1990, 65 (19) :2446-2449

[4]

BULGADAEV SA, 1987, JETP LETT+, V45, P622

[5] UNIFIED SCALING THEORY OF THE ELECTRON BOX FOR ARBITRARY TUNNELING STRENGTH [J].

FALCI, G ;

SCHON, G ;

ZIMANYI, GT .

PHYSICAL REVIEW LETTERS, 1995, 74 (16) :3257-3260

[6] EFFECTS OF QUANTUM LEVELS ON TRANSPORT THROUGH A COULOMB ISLAND [J].

FOXMAN, EB ;

MCEUEN, PL ;

MEIRAV, U ;

WINGREEN, NS ;

MEIR, Y ;

BELK, PA ;

BELK, NR ;

KASTNER, MA ;

WIND, SJ .

PHYSICAL REVIEW B, 1993, 47 (15) :10020-10023

[7]

GEORGES A, CONDMAT9702057

[8] Relation between barrier conductance and Coulomb blockade peak splitting for tunnel-coupled quantum dots [J].

Golden, JM ;

Halperin, BI .

PHYSICAL REVIEW B, 1996, 53 (07) :3893-3900

[9] CHARGE FLUCTUATIONS IN THE SINGLE-ELECTRON BOX - PERTURBATION EXPANSION IN THE TUNNELING CONDUCTANCE [J].

GRABERT, H .

PHYSICAL REVIEW B, 1994, 50 (23) :17364-17377

[10]

GRABERT H, 1992, NATO ADV STUDY I B, V294

← 1 2 3 →