NEGATIVE-DONOR CENTERS IN 2 DIMENSIONS

被引：29

作者：

SANDLER, NP

PROETTO, CR

机构：

[1] CTR ATOM BARILOCHE, RA-8400 BARILOCHE, RIO NEGRO, ARGENTINA

[2] INST BALSEIRO, RA-8400 BARILOCHE, RIO NEGRO, ARGENTINA

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.46.7707

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A variational calculation of the bound states of negative-donor centers D- in two dimensions is presented; exchange and correlation effects are included using a Chandrasekhar-type trial wave function. At zero magnetic field, a binding energy of 0.45 Ry* is obtained for the singlet ground state, eight times larger than the corresponding value in three dimensions. At very small, but finite magnetic fields, a second (triplet) state becomes bounded.

引用

页码：7707 / 7712

页数：6

共 21 条

[1]

ASHCROFT NW, 1976, SOLID STATE PHYS, P689

[2] Calculation of the Electron affinity of Hydrogen. [J].