Transverse anisotropy

Tunneling is allowed in these half-integer (S = 9/2) spin systems because of a small transverse anisotropy Htrans,i containing Sx i and S, spin operators and transverse fields (Hx and Hy). The exact form of Htrans,i is not important in this discussion. The last term in Eq. 4 is the Zeeman energy associated with an applied field. The Mn4 units within the [Mn4J2 dimer are coupled by a weak superexchange interaction via both the six C-H—Cl pathways and the Cl—Cl approach. Thus, the Hamiltonian (H) for [Ma ] 2 is... 

For a material such as a unidirectional lamina that contains all of its fibres aligned in one direction, the conditions of transverse anisotropy apply. The stress/strain relationship can be written as (Eckold 1994, Herakovich 1998) ... 

GaAs 1.35 InP 1.27 InAs 0.36 InSb 0.165 CdTe 1.44 Energy Substance Gap 0.067 8500 3 (or 6 ) equivalent [100] valleys 0.36 eV above this maximum with a mobility of 50 0.067 5000 3 (or 6 ) equivalent [100] valleys 0.4 eV above this minimum 0.022 33,000 Equivalent valleys 1.0 eV above this minimum 0.014 78,000 0.11 1000 4 (or 8 ) equivalent [111] valleys 0.51 eV above this minimum Multivalley Semiconductors Band Curvature Effective Mass Number of Equivalent Longitudinal Transverse Anisotropy Valleys and Direction nii mj K = mi/ mj ... 

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