Research output: Contribution to journal › Letter

**EFFECTIVE-MASS ANISOTROPY IN GAAS-(GA,AL)AS 2-DIMENSIONAL HOLE SYSTEMS - COMPARISON OF THEORY AND VERY HIGH-HELD CYCLOTRON-RESONANCE EXPERIMENTS.** / Cole, B E; Batty, W; Imanaka, Y; Shimamoto, Y; Singleton, J; Chamberlain, J M; Miura, N; Henini, M; Cheng, T.

Research output: Contribution to journal › Letter

Cole, BE, Batty, W, Imanaka, Y, Shimamoto, Y, Singleton, J, Chamberlain, JM, Miura, N, Henini, M & Cheng, T 1995, 'EFFECTIVE-MASS ANISOTROPY IN GAAS-(GA,AL)AS 2-DIMENSIONAL HOLE SYSTEMS - COMPARISON OF THEORY AND VERY HIGH-HELD CYCLOTRON-RESONANCE EXPERIMENTS', *Journal of physics : Condensed matter*, vol. 7, no. 48, pp. L675-L681.

Cole, B. E., Batty, W., Imanaka, Y., Shimamoto, Y., Singleton, J., Chamberlain, J. M., ... Cheng, T. (1995). EFFECTIVE-MASS ANISOTROPY IN GAAS-(GA,AL)AS 2-DIMENSIONAL HOLE SYSTEMS - COMPARISON OF THEORY AND VERY HIGH-HELD CYCLOTRON-RESONANCE EXPERIMENTS. *Journal of physics : Condensed matter*, *7*(48), L675-L681.

Cole BE, Batty W, Imanaka Y, Shimamoto Y, Singleton J, Chamberlain JM et al. EFFECTIVE-MASS ANISOTROPY IN GAAS-(GA,AL)AS 2-DIMENSIONAL HOLE SYSTEMS - COMPARISON OF THEORY AND VERY HIGH-HELD CYCLOTRON-RESONANCE EXPERIMENTS. Journal of physics : Condensed matter. 1995 Nov 27;7(48):L675-L681.

@article{335661e11f054352ad4001890151e5c9,

title = "EFFECTIVE-MASS ANISOTROPY IN GAAS-(GA,AL)AS 2-DIMENSIONAL HOLE SYSTEMS - COMPARISON OF THEORY AND VERY HIGH-HELD CYCLOTRON-RESONANCE EXPERIMENTS",

abstract = "Cyclotron resonance of two-dimensional holes in high-mobility GaAs-(Ga, Al)As heterojunctions with the growth directions [011], [111], [211], [311] and [100] has been measured at magnetic fields of around 35 T, corresponding to Landau level occupancies deep in the ultraquantum limit. A manipulation of the standard four-band Luttinger Hamiltonian has been used to show that the behaviour of the hole ground state is dominated by the leading held-dependent term in a power series expansion for the Landau level dispersion. The experimentally observed trend in measured effective mass with substrate orientation can therefore be qualitatively explained in terms of the variation of bulk hole mass with crystallographic direction.",

keywords = "QUANTUM-WELLS, INTERFACE",

author = "Cole, {B E} and W Batty and Y Imanaka and Y Shimamoto and J Singleton and Chamberlain, {J M} and N Miura and M Henini and T Cheng",

year = "1995",

month = "11",

day = "27",

language = "English",

volume = "7",

pages = "L675--L681",

journal = "Journal of physics : Condensed matter",

issn = "0953-8984",

publisher = "IOP Publishing Ltd.",

number = "48",

}

TY - JOUR

T1 - EFFECTIVE-MASS ANISOTROPY IN GAAS-(GA,AL)AS 2-DIMENSIONAL HOLE SYSTEMS - COMPARISON OF THEORY AND VERY HIGH-HELD CYCLOTRON-RESONANCE EXPERIMENTS

AU - Cole, B E

AU - Batty, W

AU - Imanaka, Y

AU - Shimamoto, Y

AU - Singleton, J

AU - Chamberlain, J M

AU - Miura, N

AU - Henini, M

AU - Cheng, T

PY - 1995/11/27

Y1 - 1995/11/27

N2 - Cyclotron resonance of two-dimensional holes in high-mobility GaAs-(Ga, Al)As heterojunctions with the growth directions [011], [111], [211], [311] and [100] has been measured at magnetic fields of around 35 T, corresponding to Landau level occupancies deep in the ultraquantum limit. A manipulation of the standard four-band Luttinger Hamiltonian has been used to show that the behaviour of the hole ground state is dominated by the leading held-dependent term in a power series expansion for the Landau level dispersion. The experimentally observed trend in measured effective mass with substrate orientation can therefore be qualitatively explained in terms of the variation of bulk hole mass with crystallographic direction.

AB - Cyclotron resonance of two-dimensional holes in high-mobility GaAs-(Ga, Al)As heterojunctions with the growth directions [011], [111], [211], [311] and [100] has been measured at magnetic fields of around 35 T, corresponding to Landau level occupancies deep in the ultraquantum limit. A manipulation of the standard four-band Luttinger Hamiltonian has been used to show that the behaviour of the hole ground state is dominated by the leading held-dependent term in a power series expansion for the Landau level dispersion. The experimentally observed trend in measured effective mass with substrate orientation can therefore be qualitatively explained in terms of the variation of bulk hole mass with crystallographic direction.

KW - QUANTUM-WELLS

KW - INTERFACE

M3 - Letter

VL - 7

SP - L675-L681

JO - Journal of physics : Condensed matter

T2 - Journal of physics : Condensed matter

JF - Journal of physics : Condensed matter

SN - 0953-8984

IS - 48

ER -