Experimental determination of the Fermi surface of thin Sc1-xErxAs epitaxial layers in pulsed magnetic fields

被引:10
作者
Bogaerts, R
Herlach, F
DeKeyser, A
Peeters, FM
DeRosa, F
Palmstrom, CJ
Brehmer, D
Allen, SJ
机构
[1] UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 ANTWERP,BELGIUM
[2] BELLCORE,RED BANK,NJ 07701
[3] UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106
来源
PHYSICAL REVIEW B | 1996年 / 53卷 / 23期
关键词
D O I
10.1103/PhysRevB.53.15951
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
High field magnetotransport measurements on thin Sc1-xErxAs layers buried in GaAs have been performed to obtain a detailed description of the Sc1-xErxAs Fermi surface. The Shubnikov-de Haas (SdH) oscillations observed in the magnetoresistance and in the Hall effect are attributed to electron ellipsoids at the X points of the first Brillouin zone, and two hole spheres at the zone center. The masses of the charge carriers are determined. The assignment of the SdH frequencies is confirmed by the analysis of the relative phases of the rho(xx) and the rho(yx) oscillations. A splitting of the SdH frequencies, due to the exchange interaction between the mobile charge carriers and the 4f Er spins, is observed for the holes as well as for the electrons. Strong evidence is presented for confinement of the charge carriers in the Sc1-xErxAs quantum well. As a consequence of this confinement, the carrier densities decrease with decreasing thickness of the layers and the SdH oscillations show two-dimensional behavior.
引用
收藏
页码:15951 / 15963
页数:13
相关论文
共 25 条
[1]   QUANTUM THEORY OF TRANSVERSE GALVANO-MAGNETIC PHENOMENA [J].
ADAMS, EN ;
HOLSTEIN, TD .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1959, 10 (04) :254-276
[2]   MAGNETOTRANSPORT IN ULTRATHIN ERAS EPITAXIAL LAYERS BURIED IN GAAS [J].
ALLEN, SJ ;
TABATABAIE, N ;
PALMSTROM, CJ ;
MOUNIER, S ;
HULL, GW ;
SANDS, T ;
DEROSA, F ;
GILCHRIST, HL ;
GARRISON, KC .
SURFACE SCIENCE, 1990, 228 (1-3) :13-15
[3]   ERAS EPITAXIAL LAYERS BURIED IN GAAS - MAGNETOTRANSPORT AND SPIN-DISORDER SCATTERING [J].
ALLEN, SJ ;
TABATABAIE, N ;
PALMSTROM, CJ ;
HULL, GW ;
SANDS, T ;
DEROSA, F ;
GILCHRIST, HL ;
GARRISON, KC .
PHYSICAL REVIEW LETTERS, 1989, 62 (19) :2309-2312
[4]   BAND-STRUCTURE, QUANTUM CONFINEMENT, AND EXCHANGE SPLITTING IN SC1-XERXAS EPITAXIAL LAYERS BURIED IN GAAS [J].
ALLEN, SJ ;
DEROSA, F ;
PALMSTROM, CJ ;
ZRENNER, A .
PHYSICAL REVIEW B, 1991, 43 (12) :9599-9609
[5]   SIZE EFFECTS IN THE TRANSPORT-PROPERTIES OF THIN SC(1-X)ER(X)AS EPITAXIAL LAYERS BURIED IN GAAS [J].
BOGAERTS, R ;
DEKEYSER, A ;
HERLACH, F ;
PEETERS, FM ;
DEROSA, F ;
PALMSTROM, CJ ;
BREHMER, D ;
ALLEN, SJ .
SOLID-STATE ELECTRONICS, 1994, 37 (4-6) :789-792
[6]   EXPERIMENTAL-STUDY OF THE ENERGY-BAND STRUCTURE OF SC1-XERXAS LAYERS IN PULSED MAGNETIC-FIELDS [J].
BOGAERTS, R ;
VANESCH, A ;
VANBOCKSTAL, L ;
HERLACH, F ;
PEETERS, FM ;
DEROSA, F ;
PALMSTROM, CJ ;
ALLEN, SJ .
PHYSICA B, 1993, 184 (1-4) :232-235
[7]   MAGNETOTRANSPORT MEASUREMENTS ON THIN SC1-XERXAS EPITAXIAL-FILMS IN PULSED MAGNETIC-FIELDS [J].
BOGAERTS, R ;
VANBOCKSTAL, L ;
HERLACH, F ;
PEETERS, FM ;
DEROSA, F ;
PALMSTROM, CJ ;
ALLEN, SJ .
PHYSICA B, 1992, 177 (1-4) :425-429
[8]   MAGNETIC ANISOTROPIES IN ANTIFERROMAGNETIC RARE EARTH ANTIMONIDE SINGLE CRYSTALS [J].
BUSCH, G ;
VOGT, O .
JOURNAL OF APPLIED PHYSICS, 1968, 39 (2P2) :1334-&
[9]  
GERHARDTS RR, 1975, Z PHYS B CON MAT, V22, P327, DOI 10.1007/BF01312802
[10]   FERMI-SURFACE OF LASB AND LABI [J].
HASEGAWA, A .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1985, 54 (02) :677-684