Magnetoresistance of copper

Launay, Jules de; Dolecek, R. L.; Webber, R. T.

doi:10.1016/0022-3697(59)90038-1

Cited by 44 publications

(18 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The last term is a phenomenological term associated with linear transverse magnetoresistance at high magnetic fields. [54][55][56] As shown in Figure 3, this equation closely matches the background response of both copper and aluminum coils. The list of fit parameters is given in Table I.…”

Section: Magnetoresistance Of Circuit Elementsmentioning

confidence: 73%

Measurement of magnetic susceptibility in pulsed magnetic fields using a proximity detector oscillator

Ghannadzadeh

Coak

Franke

et al. 2011

Review of Scientific Instruments

View full text Add to dashboard Cite

We present a novel susceptometer with a particularly small spatial footprint and no moving parts. The susceptometer is suitable for use in systems with limited space where magnetic measurements may not have been previously possible, such as in pressure cells and rotators, as well as in extremely high pulsed fields. The susceptometer is based on the proximity detector oscillator, which has a broad dynamic resonant frequency range and has so far been used predominantly for transport measurements. We show that for insulating samples, the resonance frequency behavior as a function of field consists of a magnetoresistive and an inductive component, originating, respectively, from the sensor coil and the sample. The response of the coil is modeled, and upon subtraction of the magnetoresistive component the dynamic magnetic susceptibility and magnetization can be extracted. We successfully measure the magnetization of the organic molecular magnets Cu(H(2)O)(5)(VOF(4))(H(2)O) and [Cu(HF(2))(pyz)(2)]BF(4) in pulsed magnetic fields and by comparing the results to that from a traditional extraction susceptometer confirm that the new system can be used to measure and observe magnetic susceptibilities and phase transitions.

show abstract

Section: Magnetoresistance Of Circuit Elementsmentioning

confidence: 73%

Measurement of magnetic susceptibility in pulsed magnetic fields using a proximity detector oscillator

Ghannadzadeh

Coak

Franke

et al. 2011

Review of Scientific Instruments

View full text Add to dashboard Cite

show abstract

“…At temperatures in the vicinity of 77.8 O K field and temperatixre dependence of magnetoresistance coincide again, i.e., Kohler's rule is valid. This statement, however, must not be generalized as shown by the measurements of de Launey et al [33]. The conclusion to be drawn is rather that the cases of the validity of Kohler's rule seem to constitute exceptions to the behaviour more generally found in experimental work.…”

Section: Resultsmentioning

confidence: 83%

Hall Effect and Magnetoresistance in Copper Single Crystals at Low Temperatures

Saeger

1968

Physica Status Solidi (b)

View full text Add to dashboard Cite

phys. stat. sol. 2s. 5s:) (I(J(i8) Siibjcct classification: 14.1; 21.1 in Copper Single Cr-j-st ah at, Low Temperatiires nT. I<. I. ; . SAEGEH')l'he Hall coefficient and transverse rriagnt,torcsistniicc of cwpper single cryst nls ofdif'fc.rent piirity are nieasiucd in dcpcnderiee on tlie ninpnctic ficld strength, teniI)cratiirc. nntl crystal orientation. For liipli niagnctic f'icltls iind low tcmprrattires. Kohlcr's rule is valid for both effects in pure samples for all crystal oricritntions investigated. 1)epirturc.s froin Kolrler's riilc occiir for increasing tenipcratures anfl impurity contents. The invest ipation of tlie tcniperatiire deprndt~nct~ of tlicb Hall corfficient slio\vs thiit thc niasimuni i n tlic Hall coefficieiit. versus ternprrature ciirvrs rcccntly found by several authors is duc to anisotropic rleutron-phonon scattering. Thr results of thc prcscnt investigation indicate that thv tcniperatiire dependence of tlir loir field Hall cocfficiciit differs signiricantly from t tiat previonsly assiimctl to bc valid..\n K ii pf r r-Kink ria t a1 len vcmcli iedr ner R c i nhci t niirdcn Alcssiingcn dcr Fc~ld.. Trni prrat i i r -iirid OrientieriirigsablrLrigipkrit. von Hallkorffizirnt iind \\'idcrstarids~intlcriiiip irn t ransversalen Magnctfeld durchgrfiilirt. Ini Fallc Iiohcr Rl;xplletfcldcr i i n t l tiefer Teniprr>ttiircii ist. fiir bride (:rtilkii die I

show abstract

“…Even at fields as high as 7 T, the reduction in Q is less than 3.5% for all the modes, in contrast to the massive suppression of Q in magnetic fields typically found in superconducting resonators [28,[32][33][34]. The observation can be explained by the magnetoresistance of copper at higher fields [35]. Planar structures (microstrip, stripline and coplanar) have already been employed for ESR experiments [15,[36][37][38][39][40][41][42][43][44][45][46].…”

Section: Resultsmentioning

confidence: 95%

“…Superconducting planar resonators can be substantially limited by their critical fields [26,35], and broadband transmission line structures [15,44] have limitations in sensitivity. In order to test whether our metallic CPW resonators can be employed for ESR experiments, a 2,2-diphenyl-1-picrylhydrazyl (DPPH) sample (200×100 µm 2 ) was placed on the middle of the resonator meander line and fixed by a small amount of vacuum grease.…”

Section: Resultsmentioning

confidence: 99%

Metallic coplanar resonators optimized for low-temperature measurements

Rahim¹,

Lehleiter²,

Bothner³

et al. 2016

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

Metallic coplanar microwave resonators are widely employed at room temperature, but their low-temperature performance has received little attention so far. We characterize compact copper coplanar resonators with multiple modes from 2.5 to 20 GHz at temperatures as low as 5 K. We investigate the influence of center conductor width (20 to 100 µm) and coupling gap size (10 to 50 µm), and we observe a strong increase of quality factor (Q) for wider center conductors, reaching values up to 470. The magnetic-field dependence of the resonators is weak, with a maximum change in Q of 3.5% for an applied field of 7 T. This makes these metallic resonators well suitable for magnetic resonance studies, as we document with electron spin resonance (ESR) measurements at multiple resonance frequencies.

show abstract

Magnetoresistance of copper

Cited by 44 publications

References 4 publications

Measurement of magnetic susceptibility in pulsed magnetic fields using a proximity detector oscillator

Measurement of magnetic susceptibility in pulsed magnetic fields using a proximity detector oscillator

Hall Effect and Magnetoresistance in Copper Single Crystals at Low Temperatures

Metallic coplanar resonators optimized for low-temperature measurements

Contact Info

Product

Resources

About