Fermi surface and internal magnetic field of the organic conductors λ-(BETS)2FexGa1-xCl4 -: art. no. 113101

被引：39

作者：

Uji, S ^{[1
]}

Terakura, C

Terashima, T

Yakabe, T

Terai, Y

Tokumoto, M

Kobayashi, A

Sakai, F

Tanaka, H

Kobayashi, H

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050003, Japan

[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan

[3] Univ Tokyo, Grad Sch Sci, Res Ctr Spectrochem, Bunkyo Ku, Tokyo 1130033, Japan

[4] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

[5] Inst Mol Sci, Aichi 4448585, Japan

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.65.113101

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Shubnikov-de Haas (SdH) oscillations have been examined for organic conductors lambda-(BETS)(2)FexGa1-xCl4 (x=0, 0.45, 0.78, and 1.0). In spite of the variety of the magnetic phases, no significant difference is found in the Fermi surface among them. All the salts have similar cylindrical Fermi surfaces, whose cross-sectional areas correspond to similar to15% of the first Brillouin zone. For xnot equal0, two different SdH frequencies are observed, which are ascribed to the internal magnetic field H-J due to the exchange interaction between the localized Fe moments and the conduction electron spins. The value of H-J for x=1.0 is estimated to be 32 T and decreases with decreasing x. The large H-J suggests that the field- induced superconductivity for lambda-(BETS)(2)FeCl4 is understood in terms of the Jaccarino-Peter effect.

引用

页码：1 / 4

页数：4

共 30 条

[1] Coupling of metal-insulator and antiferromagnetic transitions in the highly correlated organic conductor incorporating magnetic anions, λ-BETS2FeBrxCl4-x[BETS = Bis(ethylenedithio)tetraselenafulvalene] [J].

Akutsu, H ;

Kato, K ;

Ojima, E ;

Kobayashi, H ;

Tanaka, H ;

Kobayashi, A .

PHYSICAL REVIEW B, 1998, 58 (14) :9294-9302

[2] Superconductivity in an organic insulator at very high magnetic fields [J].

Balicas, L ;

Brooks, JS ;

Storr, K ;

Uji, S ;

Tokumoto, M ;

Tanaka, H ;

Kobayashi, H ;

Kobayashi, A ;

Barzykin, V ;

Gor'kov, LP .

PHYSICAL REVIEW LETTERS, 2001, 87 (06) :670021-670024

[3] Interplay between chains of S=5/2 localised spins and two-dimensional sheets of organic donors in the synthetically built magnetic multilayer λ-(BETS)2FeCl4 [J].

Brossard, L ;

Clerac, R ;

Coulon, C ;

Tokumoto, M ;

Ziman, T ;

Petrov, DK ;

Laukhin, VN ;

Naughton, MJ ;

Audouard, A ;

Goze, F ;

Kobayashi, A ;

Kobayashi, H ;

Cassoux, P .

EUROPEAN PHYSICAL JOURNAL B, 1998, 1 (04) :439-452

[4]

CEPAS O, IN PRESS PHYS REV B

[5] QUASI-ONE-DIMENSIONAL SUPERCONDUCTORS IN STRONG MAGNETIC-FIELD [J].

DUPUIS, N ;

MONTAMBAUX, G ;

DEMELO, CARS .

PHYSICAL REVIEW LETTERS, 1993, 70 (17) :2613-2616

[6] SUPERCONDUCTIVITY OF QUASI-ONE-DIMENSIONAL CONDUCTORS IN A HIGH MAGNETIC-FIELD [J].

DUPUIS, N ;

MONTAMBAUX, G .

PHYSICAL REVIEW B, 1994, 49 (13) :8993-9008

[7] ANGULAR AND MAGNETIC-FIELD DEPENDENCIES OF THE MAGNETORESISTANCE OF LAMBDA-(BETS)(2)FECL4 IN THE FIELD-RESTORED HIGH-CONDUCTIVITY STATE [J].

GOZE, F ;

LAUKHIN, VN ;

BROSSARD, L ;

AUDOUARD, A ;

ULMET, JP ;

ASKENAZY, S ;

NAITO, T ;

KOBAYASHI, H ;

KOBAYASHI, A ;

TOKUMOTO, M ;

CASSOUX, P .

PHYSICA B, 1995, 211 (1-4) :290-292

[8] Magnetism and fermiology of κ-(BEDT-TSF)2FeCl4 [J].

Harrison, N ;

Mielke, CH ;

Rickel, DG ;

Montgomery, LK ;

Gerst, C ;

Thompson, JD .

PHYSICAL REVIEW B, 1998, 57 (15) :8751-8754

[9] Effects of localized spins in quasi-two dimensional organic conductors [J].

Hotta, C ;

Fukuyama, H .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2000, 69 (08) :2577-2596

[10]

JACCARINO V, 1962, PHYS REV LETT, V9, P29

← 1 2 3 →