Strain-Dependent Magnetoresistance of Potassium

Penz, P. Andrew; Bowers, R.

doi:10.1103/physrev.172.991

Cited by 69 publications

(17 citation statements)

References 45 publications

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“…The surface damage also gives rise to correlated, but smaller variations of the helicon resonance frequency. Although Penz and Bowers (1968) and Chimenti and Maxfield (1973) reported some isolated studies of helicon resonance at different crystal orientations, the present work constitutes the first systematic investigation of anisotropy in the same single crystal.…”

Section: Discussionmentioning

confidence: 90%

On diophantine approximations in a field ofp-adic numbers

Nesterenko¹

1984

Russ. Math. Surv.

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New experiments are reported which investigate the field dependence and anisotropy of the Hall coefficient and magnetoresistivity in single crystals of potassium. These experiments shed light on whether the electronic ground state of potassium is a charge density wave (CDW). They comprise the first independent test of the high field structure in the orientation dependence of the magnetoresistance observed by Coulter and Datars using an induced torque experiment. At similar levels of sensitivity we find no evidence of open orbits in potassium. This result casts doubt on the CDW hypothesis.

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Section: Discussionmentioning

confidence: 90%

On diophantine approximations in a field ofp-adic numbers

Nesterenko¹

1984

Russ. Math. Surv.

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“…Deviations from the theory of Lifshits and co-workers were observed earlier in a number of cases, in particular, high, linear, magnetoresistance was observed in quasi-2D materials: NbSe 2 ͓s͑8 K͒Ϸ1.1 ϫ10 Ϫ2 kG Ϫ1 ͔; 28 some of the 2H-M X 2 polytypes of transition metal dichalcogenides for Hу10-20 kG: 2H-NbSe 2 ͓s(4.2 K)Ϸ2.3ϫ10 Ϫ2 kG Ϫ1 ),͔ 2H-TaSe 2 ͓s(4.2 K)Ϸ5.2 ϫ10 Ϫ2 kG Ϫ1 ͔; 29 as well as in isotropic ͑bcc͒ single crystals of potassium ͓s(4.2K)Ϸ0.9ϫ10 Ϫ2 kG Ϫ1 ͔ Ref. 30 and a few other metals.…”

Section: Discussionmentioning

confidence: 99%

Anisotropic magnetic properties of light rare-earth diantimonides

et al. 1998

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Results are presented of anisotropic temperature and field-dependent magnetization M (H,T) and resistivity (H,T) measurements on high quality single crystals of the light rare-earth diantimonides RSb 2 , RϭLa-Nd, Sm. All of these, excepting LaSb 2 , magnetically order at low temperatures, and for CeSb 2 and NdSb 2 several magnetically ordered phases were observed in low-field magnetization and zero-field resistivity measurements. For RϭCe-Sm strong anisotropies, associated with crystalline electric field ͑CEF͒ splitting of the R 3ϩ ion, were found in M (T) measurements both below and above magnetic ordering temperatures. Furthermore, for RϭCe-Nd metamagnetic transitions were observed in M (H) and (H) for Hʈ(ab) in the magnetically ordered state. In addition, above 15 kG de Haas-van Alphen oscillations are observed for SmSb 2 and Shubnikov-de Haas quantum oscillations are observed above ϳ120 kG for NdSb 2 and SmSb 2 . The zero-field in-plane resistivity ab of all of the compounds is metallic (d/dTϾ0), with residual resistance ratios ranging from 40 to 750. The c-axis resistivity is also metallic, but appears to be considerably larger than the in-plane value, consistent with the diantimonides being quasi-two-dimensional materials. The magnetoresistance of all members of the series is large, approximately linear in H at moderate fields, and is also dependent on the relative orientation of the applied magnetic fields to the crystallographic axes. The extreme case of SmSb 2 has ͓(55 kG)Ϫ(0)]/(0)Ͼ50 000% at Tϭ2 K and Hʈc. ͓S0163-1829͑98͒03621-2͔

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“…32 The co c r derived from the resistance measurement on a given sample was comparable with, but always larger than, the co c r derived from the linewidth. The resistance co c r tended to be 50% larger than the linewidth co c r. Part of this difference can be attributed to the linear magnetoresistance known to exist in K. 33 Magnetoresistance p(B) was not included explicity in the DSCR theory. It can be included to first approximation since p(B) does not change significantly over the width of the DSCR line.…”

Section: Linewidthmentioning

confidence: 99%

Fermi Surface of Potassium as Measured by Helicon Doppler-Shifted Cyclotron Resonance

Penz

Kushida

1968

Phys. Rev.

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Accurate helicon measurements of the surface-impedance anomaly associated with Doppler-shifted cyclotron resonance have been made on single-crystal potassium and sodium. The experiment tests the theory of the surface impedance near cyclotron resonance and also assists in the resolution of the chargedensity-wave controversy. The influence of surface scattering and sample purity have been determined and found to be in substantial agreement with the surface-impedance theory. The theoretical and experimental line shapes do not agree precisely. The position of the surface-impedance anomaly can be related to the radius of the Fermi surface. Our measurements show that the experimental position does not agree with the free-electron theory in potassium. The charge-density-wave prediction provides a much better fit. In sodium, the experiment fits the free-electron prediction more closely than the charge-density-wave calculation.

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Strain-Dependent Magnetoresistance of Potassium

Cited by 69 publications

References 45 publications

On diophantine approximations in a field ofp-adic numbers

On diophantine approximations in a field ofp-adic numbers

Anisotropic magnetic properties of light rare-earth diantimonides

Fermi Surface of Potassium as Measured by Helicon Doppler-Shifted Cyclotron Resonance

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