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Titolo:
High-frequency electron spin resonance in magnetic systems
Autore:
Katsumata, K;
Indirizzi:
RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan RIKEN Wako Saitama Japan 3510198 & Chem Res, Wako, Saitama 3510198, Japan RIKEN, Harima Inst, Sayo, Hyogo 6795148, Japan RIKEN Sayo Hyogo Japan 6795148 N, Harima Inst, Sayo, Hyogo 6795148, Japan
Titolo Testata:
JOURNAL OF PHYSICS-CONDENSED MATTER
fascicolo: 47, volume: 12, anno: 2000,
pagine: R589 - R614
SICI:
0953-8984(20001127)12:47<R589:HESRIM>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHAIN HEISENBERG-ANTIFERROMAGNET; HALDANE-GAP ANTIFERROMAGNET; HIGH-FIELD MAGNETIZATION; MONTE-CARLO CALCULATION; PEIERLS CUPRATE CUGEO3; SUBMILLIMETER-WAVE ESR; BOND GROUND-STATES; QUANTUM ENERGY-GAP; LINEAR-CHAIN; PHASE-DIAGRAM;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
116
Recensione:
Indirizzi per estratti:
Indirizzo: Katsumata, K RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan RIKEN Wako Saitama Japan 3510198 ako, Saitama 3510198, Japan
Citazione:
K. Katsumata, "High-frequency electron spin resonance in magnetic systems", J PHYS-COND, 12(47), 2000, pp. R589-R614

Abstract

We review the recent progress in the study of magnetic materials using a high-frequency electron spin-resonance (ESR) technique. First, we show how useful high-frequency ESR is for studying antiferromagnetic materials, wherethe ESR frequency and magnetic field depend greatly on the exchange interaction and anisotropy energy of the materials. Next, we review the recent high-frequency ESR experiments made on spin S = 1 quasi-one-dimensional Heisenberg antiferromagnets (Q1D HAFs) and the spin-Peierls system CuGeO3. Then,we review the ESR studies performed on more complex systems, such as an S = 1 Q1D HAF with bond alternation, spin-ladder compounds and quasi-two-dimensional magnets. Each of these systems has a singlet ground state of quantum origin and an energy gap to the lowest excited state. On applying an external magnetic field, these systems show a transition from the non-magnetic to a magnetized state, and in some cases, long-range magnetic ordering occurs. Efforts are made to explain the underlying physics intuitively at the expense of rigour.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 16:10:46