Mesoscopic fluctuations of the ground-state spin of a small metal particle

被引：85

作者：

Brouwer, PW ^{[1
]}

Oreg, Y ^{[1
]}

Halperin, BI ^{[1
]}

机构：

[1] Harvard Univ, Lyman Lab Phys, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.60.R13977

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the statistical distribution of the ground-state spin for an ensemble of small metallic grains, using a random-matrix toy model. Using the Hartree-Fock approximation, we find that for interaction strengths well below the Stoner criterion there is already an appreciable probability that the ground state has a spin other than zero or one half. Possible relations to experiments are discussed. [S0163-1829(99)50644-9].

引用

页码：13977 / 13980

页数：4

共 25 条

[1] Chaos, interactions, and nonequilibrium effects in the tunneling resonance spectra of ultrasmall metallic particles
Agam, O
Wingreen, NS
Altshuler, BL
Ralph, DC
Tinkham, M
[J]. PHYSICAL REVIEW LETTERS, 1997, 78 (10) : 1956 - 1959
[2] Itinerant ferromagnetism in disordered metals: A mean-field theory
Andreev, AV
Kamenev, A
[J]. PHYSICAL REVIEW LETTERS, 1998, 81 (15) : 3199 - 3202
[3] BARANGER HU, CONDMAT9907151
[4] Absence of bimodal peak spacing distribution in the coulomb blockade regime
Berkovits, R
[J]. PHYSICAL REVIEW LETTERS, 1998, 81 (10) : 2128 - 2131
[5] Fluctuations of conductance peak spacings in the Coulomb blockade regime: Role of electron-electron interaction
Blanter, YM
Mirlin, AD
Muzykantskii, BA
[J]. PHYSICAL REVIEW LETTERS, 1997, 78 (12) : 2449 - 2452
[6] Spin splitting and even-odd effects in carbon nanotubes
Cobden, DH
Bockrath, M
McEuen, PL
Rinzler, AG
Smalley, RE
[J]. PHYSICAL REVIEW LETTERS, 1998, 81 (03) : 681 - 684
[7] Statistics of Coulomb-blockade peak spacings within the Hartree-Fock approximation
Cohen, A
Richter, K
Berkovits, R
[J]. PHYSICAL REVIEW B, 1999, 60 (04) : 2536 - 2540
[8] DAVIDOVIC D, CONDMAT9910396
[9] EISENBERG E, CONDMAT9812264
[10] The classification of wave functions and eigen-values to the single electrons of an atom
Koopmans, T
[J]. PHYSICA, 1934, 1 : 104 - 113

← 1 2 3 →