Electronic states of boron in superconducting MgB2 studied by B-11 NMR / Gerashenko AP,Mikhalev KN,Verkhovskii SV,D'yachkova TV,Tyutyunnik AP,Zubkov VG // APPLIED MAGNETIC RESONANCE. - 2001. - V. 21, l. 2. - P. 157-163.

ISSN/EISSN:

0937-9347 / 1613-7507

Type:

Article

Abstract:

Nuclear magnetic resonance (NMR) spectra and nuclear spin-lattice relaxation rate T-1(-1) of B-11 have been measured in superconducting polycrystalline MgB2 with T-c(ons) = 39.5 K. It is shown that (T1T)(-1) and the Knight shift K-s are independent of temperature and nearly isotropic above T-c. Both of these quantities are decreased gradually in going to the superconducting state. According to NMR data the density of states near the Fermi level is flat at the scale of about 500 K. Some conclusions on the orbital content of the density of states at the Fermi level were drawn and compared with the results of the band structure calculations.

Author keywords:

нет данных

DOI:

10.1007/BF03162449

Web of Science ID:

ISI:000172777200004

Соавторы в МНС:

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Другие поля

Поле	Значение
Publisher	SPRINGER WIEN
Address	SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA
Language	English
EISSN	1613-7507
Research-Areas	Physics; Spectroscopy
Web-of-Science-Categories	Physics, Atomic, Molecular \& Chemical; Spectroscopy
Author-Email	gerashenko@imp.uran.ru
ResearcherID-Numbers	Gerashenko, Alexander/J-9321-2013 Verkhovskii, Stanislav/K-2863-2013 Tyutyunnik, Alexander/P-2230-2015 Mikhalev, Konstantin/K-3069-2013
ORCID-Numbers	Gerashenko, Alexander/0000-0002-9114-7141 Verkhovskii, Stanislav/0000-0002-8035-9544 Mikhalev, Konstantin/0000-0001-5726-4427
Number-of-Cited-References	11
Usage-Count-Since-2013	10
Journal-ISO	Appl. Magn. Reson.
Doc-Delivery-Number	503BL