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Toshiaki Kaminaka Miki Wadati 《Physics letters. A》2011,375(24):2460-2464
We study higher order solutions of Lieb-Liniger integral equation for a one-dimensional δ-function Bose gas. By use of the power series expansion method, the integral equation is solved and the correction terms which improve the Bogoliubov theory are calculated analytically in the weak coupling regime. Physical quantities such as the ground state energy and the chemical potential are represented by a dimensionless parameter γ=c/ρ, where c is the interaction strength and ρ is the number density of particles while the quasi-momentum distribution function is expressed in terms of a dimensionless parameter λ=c/K, where K is the cut-off momentum. 相似文献
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Matsuta K. Sasaki M. Tsubota T. Kaminaka S. Hashimoto K. Kudo S. Ogura M. Arimura K. Mihara M. Fukuda M. Akai H. Minamisono T. 《Hyperfine Interactions》2001,136(3-8):379-384
The hyperfine interactions of 8Li implanted in single crystal Fe have been studied using the β-NMR technique. One kind of hyperfine field B
hf was found. Since no dipolar field was observed, 8Li nuclei are suggested to sit in substitutional sites. The B
hf and the spin-lattice relaxation time T
1 were observed as functions of temperature. The experimental B
hf and T
1 were compared with the theoretical predictions from the first principles KKR-band-structure calculations. While predicted
B
hf for the substitutional site is consistent with the experiment, predicted T
1 cannot reproduce the experiment well.
This revised version was published online in September 2006 with corrections to the Cover Date. 相似文献
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Matsuta K. Minamisono T. Tanigaki M. Onishi T. Fukuda M. Mihara M. Akai H. Sasaki M. Yamaguchi T. Miyake T. Sato K. Minamisono K. Ha C. Tanaka K. Kidera K. Morishita A. Kaminaka S. Tsubota T. Sumikama T. Kitagawa A. Torikoshi M. Kanazawa M. Nishio T. Koda S. Ohtsubo T. Nojiri Y. Momota S. Hanna S.S. Alonso J.R. Krebs G.F. Symons T.J.M. 《Hyperfine Interactions》1999,120(1-8):719-723
The Knight shifts K for short-lived β emitters 12N and 27Si implanted in Pt have been measured by means of β-NMR technique. The results were K(12N in Pt)= +(5.8 ± 2.1)× 10-4 and K(27Si in Pt)= +(1.4 ± 0.8)× 10-3. The spin–lattice relaxation time T1 was measured for 12N in Pt. The result was T1(12N in Pt, T=300 K)= 66 ± 8 ms, thus, T1T= 20 ± 2 Ks. The present Knight shifts are in good agreement with the KKR band structure calculation with local lattice relaxation
determined theoretically.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
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Hideaki Komoda Fumio Echigo Masanaru Hasegawa Nobuyuki Kaminaka 《Journal of magnetism and magnetic materials》1993,120(1-3):16-18
We have examined a flexible disk for high recording density (35 kFCI, 542 tpi), and with a maximum transfer rate of 4.5 MBPS. By setting the magnetic layer thickness at less than 0.4 μm, the media coercivity at more than 120 kA/m, and applying it to a non-magnetic underlayer, we have realized useful flexible disk media wear resistance of 2×107 passes. 相似文献
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