Tunable Doniach phase diagram for strongly-correlated nanoclusters
(2005) In Physical Review B. Condensed Matter and Materials Physics 71.- Abstract
- Exact diagonalization calculations reveal that the energy spacing Delta in the conduction band tunes the interplay between the local Kondo and nonlocal Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions, giving rise to a Doniach phase diagram for a nanocluster with regions of prevailing Kondo or RKKY correlations. The parity of the total number of electrons alters the competition between the Kondo and RKKY correlations. This interplay may be relevant to experimental realizations of small rings or quantum dots with tunable magnetic properties. Below a critical value Vc of the hybridization the susceptibility exhibits a low-T exponential activation behavior determined by the interplay of the spin gap and Delta.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/921288
- author
- Luo, Y. ; Verdozzi, Claudio LU and Kioussis, N
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B. Condensed Matter and Materials Physics
- volume
- 71
- article number
- 033304
- publisher
- American Physical Society
- external identifiers
-
- scopus:15444372541
- DOI
- 10.1103/PhysRevB.71.033304
- language
- English
- LU publication?
- yes
- id
- 448aa4f8-3eda-44b9-8cb0-ccc855e17534 (old id 921288)
- date added to LUP
- 2016-04-04 12:09:08
- date last changed
- 2022-01-29 23:03:21
@article{448aa4f8-3eda-44b9-8cb0-ccc855e17534, abstract = {{Exact diagonalization calculations reveal that the energy spacing Delta in the conduction band tunes the interplay between the local Kondo and nonlocal Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions, giving rise to a Doniach phase diagram for a nanocluster with regions of prevailing Kondo or RKKY correlations. The parity of the total number of electrons alters the competition between the Kondo and RKKY correlations. This interplay may be relevant to experimental realizations of small rings or quantum dots with tunable magnetic properties. Below a critical value Vc of the hybridization the susceptibility exhibits a low-T exponential activation behavior determined by the interplay of the spin gap and Delta.}}, author = {{Luo, Y. and Verdozzi, Claudio and Kioussis, N}}, language = {{eng}}, publisher = {{American Physical Society}}, series = {{Physical Review B. Condensed Matter and Materials Physics}}, title = {{Tunable Doniach phase diagram for strongly-correlated nanoclusters}}, url = {{http://dx.doi.org/10.1103/PhysRevB.71.033304}}, doi = {{10.1103/PhysRevB.71.033304}}, volume = {{71}}, year = {{2005}}, }