Impurity Scattering in n‐Ge in Quantizing Magnetic Fields

Babich, V. M.; Баранский, П. И.; Demidenko, L. S.; Ilchishin, V. A.; Korolyuk, L. S.; Samoilovich, A. G.

doi:10.1002/pssb.2220750132

Cited by 4 publications

(7 citation statements)

References 1 publication

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“…It turns out that, to a reasonable approximation, the sensitivity of σ ± to the contact interaction parameters in the 'linear' approximation where, as anticipated, only the interference term is taken into account in the observable quantities, 4 can be simply expressed by the bounds directly following from Eqs. (20) and (21):…”

Section: Model Independent Analysis and Resultsmentioning

confidence: 99%

“…The above mentioned distinctive features with regard to the determination of the helicity cross sections make σ + and σ − potentially more convenient, in order to study the deviations from the SM due to the four-fermion contact interactions. The role of these observables also for other types of new physics to be studied in e + e − collisions such as, e.g., a new heavy neutral gauge boson Z ′ or the anomalous gauge boson couplings, has previously been emphasized in [19], [20].…”

Section: Separation Of the Helicity Cross Sectionsmentioning

confidence: 99%

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Model-independent limits on four-fermion contact interactions at LC with polarization

Панков

Paver

1998

Physics Letters B

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Fermion compositeness, and other types of new physics that can be described by the exchange of very massive particles, can manifest themselves as the result of an effective four-fermion contact interaction. In the case of the processes e + e − → µ + µ − , τ + τ − ,bb andcc at future e + e − colliders with √ s = 0.5 − 1 TeV, we examine the sensitivity to four-fermion contact interactions of two new integrated observables, σ + and σ − , conveniently defined for such kind of analysis. We find that, if longitudinal polarization of the electron beam were available, these observables would offer the opportunity to separate the helicity cross sections and, in this way, to derive model-independent bounds on the relevant parameters.

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Section: Model Independent Analysis and Resultsmentioning

confidence: 99%

Section: Separation Of the Helicity Cross Sectionsmentioning

confidence: 99%

Model-independent limits on four-fermion contact interactions at LC with polarization

Панков

Paver

1998

Physics Letters B

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“…Finally, taking Eq. (23) into account, the lepton neutral current couplings to Z 1 and Z 2 are, respectively [15]:…”

Section: B Fermion Mass Basismentioning

confidence: 99%

“…For early papers on these effects, see Refs. [13][14][15]. We allow for effects due to extra Z gauge boson exchange.…”

Section: Introductionmentioning

confidence: 99%

Unique heavy lepton signature ate+e−linear collider with polarized beams

et al. 2013

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We explore the effects of neutrino and electron mixing with exotic heavy leptons in the process e + e − → W + W − within E 6 models. We examine the possibility of uniquely distinguishing and identifying such effects of heavy neutral lepton exchange from Z-Z mixing within the same class of models and also from analogous ones due to competitor models with anomalous trilinear gauge couplings (AGC) that can lead to very similar experimental signatures at the e + e − International Linear Collider (ILC) for √ s = 350, 500 GeV and 1 TeV. Such clear identification of the model is possible by using a certain double polarization asymmetry. The availability of both beams being polarized plays a crucial role in identifying such exotic-lepton admixture. In addition, the sensitivity of the ILC for probing exotic-lepton admixture is substantially enhanced when the polarization of the produced W ± bosons is considered.

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“…Babich et al [23] used these results to analyze the magnetoresistance for impurity scattering using the many-valley model of n-Ge. A completely new theory for the transverse magnetoresistance based 011 the equivalence of Joule heat and energy loss has been presented by Doran and Gerlach [24, 251 and compared with the experimental work of Neuringer [26].…”

Section: Introductionmentioning

confidence: 99%

Quantum‐limit magnetoresistance for impurity scattering

Arora

Spector

1979

Physica Status Solidi (b)

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323The heoretical formalism for calculating the magnetotransport effects developed by Arora an-Peterson is extended to include the effects of anisotropic screened ionized impurity scattering in nondegenerate semiconductors in the quantum limit when hw,: >>k,T. Screening is found to be negligible at high magnetic fields for the transverse magnetoresistance. It is found that for point defect scattering, both the longitudinal and transverse magnetoresistance are linear in the magnetic field, whereas the Hall coefficient differs from its high field value l/enec by a temperature dependent factor which is found to be close to unity. For ionized impurity scattering, the longitudinal magnetoresistance is found to be independent of the magnetic field, whereas the transverse magnetoresistance and t,he Hall coefficient decrease with magnetic field, the former as B-l, where B is the magnetic field. For combined acoustic phonon and ionized impurity scattering, the acoustic phonon scattering is found to dominate a t very high magnetic fields giving rise to the experimentally observed linear magnetoresistance. The combination of acoustic phonon and point defect scattering also yields similar results. Der von Arora und Peterson entwickelte Formalismus zur Berechnnng der Magnetotransporteffekte wird erweitert zur Berucksichtigung der Effekte anisotrop-abgeschirmter ionisierter Storstellen in nichtentarteten Halbleitern in der Quantengrenze (wenn hw, > kBT). F u r den transversalen Magnetowiderstand ist der EinfluS der Abschirmung bei hohen Magnetfeldern vernach-Iassigbar. Fur punktformige Storstellen wird gefunden, daD transversaler und longitudinaler Magnetowiderstand linear im Magnetfeld sind, wahrend der Hallkoeffizient von seinem Hochfeldwert l/en,c um einen nahe bei eins gelegenen temperaturabhangigen Faktor abweicht. Fur die Streuung a n ionisierten Storstellen ergibt sich, daB der longitudinale Magnetowiderstand magnetfeldunabhangig ist, dagegen der transversale Magnetowiderstand und der Hallkoeffizient mit wachsendem Feld abfallen, letzter wie 1/B. Fur kombinierte Streuung an ionisierten Storstellen und akustischen Phononen resultiert eine Dominanz der Streuung an akustischen Phononen bei sehr hohen Feldern, was zum experimentell beobaehteten linearen Magnetowiderstand fuhrt. Die Kombinat ion von punktformigen Storstellen und akustischen Phononen fuhrt zu ahnliehen Ergebnissen.

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Impurity Scattering in n‐Ge in Quantizing Magnetic Fields

Cited by 4 publications

References 1 publication

Model-independent limits on four-fermion contact interactions at LC with polarization

Model-independent limits on four-fermion contact interactions at LC with polarization

Unique heavy lepton signature ate+e−linear collider with polarized beams

Quantum‐limit magnetoresistance for impurity scattering

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