Magnetization Process of the S = 1/2 Two-Leg Organic Spin-Ladder Compound BIP-BNO

Magnetization Process of the S = 1/2 Two-Leg Organic Spin-Ladder Compound BIP-BNO

We have measured the magnetization of the organic compound BIP-BNO [3,5'-bis(N-tert-butylaminoxyl)-3',5-dibromobiphenyl] up to 76 T, at which the magnetization is saturated. The S = 1/2 antiferromagnetic Heisenberg (AFH) two-leg spin-ladder model accounts for the magnetization curve, which...

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Veröffentlicht in:Journal of the Physical Society of Japan 2017-10, Vol.86 (10), p.104713
Hauptverfasser: Nomura, Kazuya, Matsuda, Yasuhiro H., Narumi, Yasuo, Kindo, Koichi, Takeyama, Shojiro, Hosokoshi, Yuko, Ono, Toshio, Hasegawa, Naoya, Suwa, Hidemaro, Todo, Synge
Format: Artikel
Sprache:eng
Schlagworte:
Antiferromagnetism
Computer simulation
Magnetism
Magnetization
Monte Carlo simulation
Organic chemicals
Quantum physics
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Zusammenfassung:We have measured the magnetization of the organic compound BIP-BNO [3,5'-bis(N-tert-butylaminoxyl)-3',5-dibromobiphenyl] up to 76 T, at which the magnetization is saturated. The S = 1/2 antiferromagnetic Heisenberg (AFH) two-leg spin-ladder model accounts for the magnetization curve, which is well reproduced by quantum Monte Carlo calculations. The exchange constants on the rung and leg of the ladder are evaluated as Jrung/kB = 65.7 K and Jleg/kB = 14.1 K, respectively, which is in the strong coupling region of Jrung/Jleg > 1. The results provide strong evidence that BIP-BNO is an S = 1/2 AFH two-leg spin ladder.
ISSN:0031-9015
1347-4073
DOI:10.7566/JPSJ.86.104713