Bond-randomness-induced Néel order in weakly coupled antiferromagnetic spin chains
نویسندگان
چکیده
منابع مشابه
Weakly Coupled Antiferromagnetic Quantum Spin Chains
Quasi-one-dimensional quantum antiferromagnets formed by a d-dimensional hypercubic lattice of weakly coupled spin-1/2 antiferromagnetic Heisenberg chains are studied by combining exact results in one-dimension and renormalization group analyses of the interchain correlations. It is shown that d-dimensional magnetic long-range order develops at zero-temperature for infinitesimal antiferromagnet...
متن کاملDynamics of weakly coupled random antiferromagnetic quantum spin chains
We study the low-energy collective excitations and dynamical response functions of weakly coupled random antiferromagnetic spin-1 /2 chains. The interchain coupling leads to Néel order at low temperatures. We use the real-space renormalization-group technique to tackle the intrachain couplings and treat the interchain couplings within the random phase approximation RPA . We show that the system...
متن کاملValence bond mapping of antiferromagnetic spin chains
Antiferromagnetic spin chains have been the subject of intense interest in recent years, largely due to the conjecture by Haldane that chains built from integer spins should exhibit a gap in their energy spectrum. The existence of this gap, originally predicted on the basis of simple fieldtheoretic considerations, was subsequently confirmed experimentally. Much insight into the properties of an...
متن کاملThree-Dimensional Ordering in Weakly Coupled Antiferromagnetic Ladders and Chains
A theoretical description is presented for low-temperature magnetic-field induced threedimensional (3D) ordering transitions in strongly anisotropic quantum antiferromagnets, consisting of weakly coupled antiferromagnetic spin-1/2 chains and ladders. First, effective continuum field theories are derived for the one-dimensional subsystems. Then the Luttinger parameters, which determine the low-t...
متن کاملMagnetic properties of spin-1 antiferromagnetic chains with bond alternation
Magnetic properties of spin-1 antiferromagnetic chains with bond alternation Masayuki Hagiwara,∗1,∗2,∗3 Yasuo Narumi,∗3 Koichi Kindo,∗3 Masanori Kohno,∗4 Hiroki Nakano,∗5 Ryutaro Sato,∗6 and Minoru Takahashi∗7 ∗1Magnetic Materials Laboratory, RIKEN ∗2Faculty of Integrated Science, Yokohama City University ∗3Research Center for Materials Science at Extreme Conditions, Osaka University ∗4Mitsubis...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2003
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.67.174403