VARIATIONAL MODEL FOR STRONGLY CORRELATED FERMIONS IN A MAGNETIC-FIELD

被引：1

作者：

ACQUARONE, M

机构：

[1] C.N.R. Department of Physics, University of Parma

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1992年 / 108卷 / 1-3期

关键词：

D O I：

10.1016/0304-8853(92)91403-G

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

For a single band of correlated fermions at T = 0 in a magnetic field h we prove that: (a) if n < 1 and U > 2W, the effective mass for spin-up (-down) particles decreases (increases) with h; (b) if n = 1 and U < 2W, the effective mass is spin-dependent, the magnetoresistance is positive, and h induces a first-order transition to the localized, magnetically saturated state.

引用

收藏

页码：181 / 182

页数：2

相关论文

共 13 条

[1] NEUTRON EXPERIMENTS ON SOLID HE-3 IN HIGH-FIELD AT VERY LOW-TEMPERATURE [J].

BOSSY, J ;

BENOIT, A ;

SCHWEIZER, J .

JOURNAL OF LOW TEMPERATURE PHYSICS, 1990, 81 (5-6) :341-347

[2] HIGH-FIELD TRANSITIONS IN URU2SI2 OBSERVED BY MAGNETORESISTIVITY AND MAGNETIZATION EXPERIMENTS [J].

DEVISSER, A ;

DEBOER, FR ;

MENOVSKY, AA ;

FRANSE, JJM .

SOLID STATE COMMUNICATIONS, 1987, 64 (04) :527-530

[3] APPLICATION OF THE GUTZWILLER METHOD TO THE PERIODIC ANDERSON MODEL [J].

FAZEKAS, P ;

BRANDOW, BH .

PHYSICA SCRIPTA, 1987, 36 (05) :809-819

[4] MAGNETIC AND SUPERCONDUCTING PROPERTIES OF UPT3 [J].

FRANSE, JJM ;

DEVISSER, A ;

MENOVSKY, A ;

FRINGS, PH .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1985, 52 (1-4) :61-69

[5] MAGNETIC-FIELD DEPENDENCE OF THE CYCLOTRON EFFECTIVE MASS IN THE KONDO LATTICE CEB6 [J].

JOSS, W ;

VANRUITENBEEK, JM ;

CRABTREE, GW ;

THOLENCE, JL ;

VANDEURSEN, APJ ;

FISK, Z .

JOURNAL OF APPLIED PHYSICS, 1988, 63 (08) :3893-3895

[6] OBSERVATION OF THE MAGNETIC-FIELD DEPENDENCE OF THE CYCLOTRON MASS IN THE KONDO LATTICE CEB6 [J].

JOSS, W ;

VANRUITENBEEK, JM ;

CRABTREE, GW ;

THOLENCE, JL ;

VANDEURSEN, APJ ;

FISK, Z .

PHYSICAL REVIEW LETTERS, 1987, 59 (14) :1609-1612

[7] LOW-TEMPERATURE PROPERTIES OF THE HEAVY-FERMION COMPOUND CERU2SI2 AT THE METAMAGNETIC TRANSITION [J].

PAULSEN, C ;

LACERDA, A ;

PUECH, L ;

HAEN, P ;

LEJAY, P ;

THOLENCE, JL ;

FLOUQUET, J ;

DEVISSER, A .

JOURNAL OF LOW TEMPERATURE PHYSICS, 1990, 81 (5-6) :317-339

[8] DEHAAS-VANALPHEN EFFECT IN THE HEAVY-ELECTRON COMPOUND CECU6 [J].

REINDERS, PHP ;

SPRINGFORD, M ;

COLERIDGE, PT ;

BOULET, R ;

RAVOT, D .

PHYSICAL REVIEW LETTERS, 1986, 57 (13) :1631-1634

[9] GUTZWILLER VARIATIONAL APPROXIMATION TO THE HEAVY-FERMION GROUND-STATE OF THE PERIODIC ANDERSON MODEL [J].

RICE, TM ;

UEDA, K .

PHYSICAL REVIEW LETTERS, 1985, 55 (09) :995-998

[10]

SPALEK J, 1990, PHYS REV LETT, V64, P2823, DOI 10.1103/PhysRevLett.64.2823