Magnetization and spin gap in two-dimensional organic ferrimagnet BIPNNBNO / Ovchinnikov A. S.,Sinitsyn V. E.,Bostrem I. G.,Hosokoshi Y.,Inoue K. // JOURNAL OF PHYSICS-CONDENSED MATTER. - 2012. - V. 24, l. 30.

ISSN/EISSN:

0953-8984 / нет данных

Type:

Article

Abstract:

A magnetization process in the two-dimensional ferrimagnet BIPNNBNO is analyzed. The compound consists of ferrimagnetic (1, 1/2) chains coupled by two sorts of antiferromagnetic interaction. Whereas the behavior of the magnetization curve in higher magnetic fields can be understood within a process for the separate ferrimagnetic chain, the appearance of the singlet plateau at lower fields is an example of non-Lieb-Mattis type ferrimagnetism. By using the exact diagonalization technique for finite clusters of size 4 x 6, 4 x 8 and 4 x 10 we show that the interchain frustration coupling plays an essential role in stabilization of the singlet phase. These results are complemented by an analysis of four cylindrically coupled ferrimagnetic (1, 1/2) chains via an Abelian bosonization technique and an effective theory based on the XXZ spin-1/2 Heisenberg model when the interchain interactions are sufficiently weak/strong, respectively.

Author keywords:

LOW-TEMPERATURE; GROUND-STATE; 2 DIMENSIONS; HALDANE-GAP; CHAINS; FIELD; PLATEAUS; LADDERS; SYSTEM; S=1/2

DOI:

10.1088/0953-8984/24/30/306003

Web of Science ID:

ISI:000306405600018

Соавторы в МНС:

Другие поля

Поле	Значение
Month	AUG 1
Publisher	IOP PUBLISHING LTD
Address	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
Language	English
Article-Number	306003
Keywords-Plus	LOW-TEMPERATURE; GROUND-STATE; 2 DIMENSIONS; HALDANE-GAP; CHAINS; FIELD; PLATEAUS; LADDERS; SYSTEM; S=1/2
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
ResearcherID-Numbers	Ovchinnikov, Alexander/B-9906-2009 Sinitsyn, Vladimir/E-8359-2017 INOUE, Katsuya/E-9221-2010
ORCID-Numbers	Sinitsyn, Vladimir/0000-0001-9743-7118 Ovchinnikov, Alexander/0000-0002-1173-9260
Number-of-Cited-References	40
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	16
Journal-ISO	J. Phys.-Condes. Matter
Doc-Delivery-Number	974BU