Publisher’s Note: Circular-Polarization-Dependent Study of the Microwave Photoconductivity in a Two-Dimensional Electron System [Phys. Rev. Lett.<b>95</b>, 116804 (2005)]

Smet, J. H.; Gorshunov, B.; Jiang, Chenghua; Pfeiffer, L. N.; West, K. W.; Umansky, V.; Meisels, R.; Kuchar, F.; Klitzing, K. von

doi:10.1103/physrevlett.98.219902

Cited by 82 publications

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“…Works examining this regime include refs. 1,15,[17][18][19][21][22][23] Here, ref. 15 exhibited radiation-induced magnetoresistance oscillations to 254 GHz.…”

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confidence: 99%

Terahertz photovoltaic detection of cyclotron resonance in the regime of radiation-induced magnetoresistance oscillations

Mani

Ramanayaka

et al. 2013

Phys. Rev. B

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We examine and compare the diagonal magnetoresistance, R xx , and the photo-voltage induced by microwave (42 ≤ f < 300GHz) and terahertz (f ≥ 300GHz) photoexcitation in the high mobility quasi two-dimensional GaAs/AlGaAs system. The data demonstrate strong radiation-induced magneto-resistance oscillations in R xx to 360GHz. In addition, cyclotron resonance is observed in the photo-voltage to 725GHz. These results show that our high mobility GaAs/AlGaAs 2DES specimens remain photo-active in magnetotransport into the terahertz band.

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“…Works examining this regime include refs. 1,15,[17][18][19][21][22][23] Here, ref. 15 exhibited radiation-induced magnetoresistance oscillations to 254 GHz.…”

mentioning

confidence: 99%

Terahertz photovoltaic detection of cyclotron resonance in the regime of radiation-induced magnetoresistance oscillations

Mani

Ramanayaka

et al. 2013

Phys. Rev. B

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“…While a great deal of attention has been paid both experimentally, 5−19 and theoretically 7,20−49 In particular, some recent experimental results appear to challenge existing theories. 17,18 To advance our understanding of the phenomena we explore new experimental regime of high-intensity microwave (MW) radiation.…”

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confidence: 99%

Multiphoton processes in microwave photoresistance of two-dimensional electron systems

Zudov

Pfeiffer³

et al. 2006

Phys. Rev. B

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We extend our studies of microwave photoresistance of ultra-high mobility two-dimensional electron system (2DES) into the high-intensity, non-linear regime employing both monochromatic and bichromatic radiation. Under high-intensity monochromatic radiation ω we observe new zeroresistance states (ZRS) which correspond to rational values of ε = ω/ωC (ωC is the cyclotron frequency) and can be associated with multiphoton processes. Under bichromatic radiation ω1, ω2 we discover new resistance minimum, possibly a precursor of bichromatic ZRS, which seems to originate from a frequency mixing process, ω1 + ω2. These findings indicate that multiphoton processes play important roles in the physics of non-equilibrium transport of microwave-driven 2DES, and suggest new directions for theoretical and experimental studies. Intense current interest to millimeterwave photoconductivity of two-dimensional electron systems (2DES) was triggered by the discovery of microwave-induced resistance oscillations (MIRO)1,2 and zero-resistance states (ZRS), 3,4 emerging in ultra-high mobility samples at weak magnetic fields and low temperatures. While a great deal of attention has been paid both experimentally, 5−19 and theoretically 7,20−49 In particular, some recent experimental results appear to challenge existing theories.17,18 To advance our understanding of the phenomena we explore new experimental regime of high-intensity microwave (MW) radiation.Phenomenologically, MIRO appear due to oscillatory microwave photoresistance (PR), ∆R ω = R ω −R 0 , which (i) is a periodic function in inverse magnetic field, 1/B with a period given by ε = ω/ω C , where ω = 2πf and ω C = eB/m * are microwave and cyclotron frequency, respectively, (ii) can take both positive (maxima) and negative (minima) values depending on ε, and (iii) can approach the background dark resistance by absolute value under certain experimental conditions. Although one could expect appearance of negative resistance at some of the MIRO minima, experiments (and theory 22 ) usually (see, however Ref. 10) show that 2DES instead exhibits ZRS, as the resistance saturates close to zero. Since the resistance maxima (+) and minima (−) appear in pairs 9 situated roughly symmetrically about cyclotron resonance harmonics, i.e., ε ± j ≈ j ∓ φ j , they are commonly associated with an integral j (ε ± j ≈ j). All ZRS reported to date were observed at ε j = j + φ j , j = 1, 2, 3, ...where φ j is experimentally found to be 0 < φ ≤ 1/4. The work reported here was provoked by peculiar photoresistance features far from integral ε, which were first noticed in experiments on moderate mobility samples. 1In particular, prominent resistance maximum and minimum were observed about ε ≈ 1/2 at f = 45 GHz. 1Later experiments confirmed this observation 7,10,16 and even reported features close to other rational values of ε ≈ j/m, e.g. 3/2, 5/2, and 2/3. 4,9 It was proposed, 9 that these features originate from two-(m = 2) and threephoton (m = 3) processes; here, an electron absorbs m photons to jump j Land...

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“…From the experimental standpoint, remarkable contributions are being published in a continuous basis. Among them we can highlight activated temperature dependence in the magnetoresisitivity (ρ xx ) response 3,4,5 , quenching of ρ xx response at high microwave (MW) intensities 2,6 , absolute negative conductivity (ANC) and breakdown of ZRS 2,5,6,7 , suppression of MIRO and ZRS by in-plane magnetic field 8,9 and the evidence that MIRO and ZRS are notably immune to the sense of circular polarization of MW radiation 10 . Very recently, an experimental achievement has joined the group of new contributions.…”

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confidence: 99%

Magnetoresistivity modulated response in bichromatic microwave irradiated two dimensional electron systems

Iñarrea

Platero

2006

Applied Physics Letters

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We analyze the effect of bichromatic microwave irradiation on the magnetoresistivity of a two dimensional electron system. We follow the model of microwave driven Larmor orbits in a regime where two different microwave lights with different frequencies are illuminating the sample (w 1 and w 2 ). Our calculated results demonstrate that now the electronic orbit centers are driven by the superposition of two harmonic oscillatory movements with the frequencies of the microwave sources. As a result the magnetoresisitivity response presents modulated pulses in the amplitude with a frequency of w 1 −w 2 2 , whereas the main response oscillates with w 1 +w 2 2 . PACS numbers:

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Publisher’s Note: Circular-Polarization-Dependent Study of the Microwave Photoconductivity in a Two-Dimensional Electron System [Phys. Rev. Lett.95, 116804 (2005)]

Cited by 82 publications

References 0 publications

Terahertz photovoltaic detection of cyclotron resonance in the regime of radiation-induced magnetoresistance oscillations

Terahertz photovoltaic detection of cyclotron resonance in the regime of radiation-induced magnetoresistance oscillations

Multiphoton processes in microwave photoresistance of two-dimensional electron systems

Magnetoresistivity modulated response in bichromatic microwave irradiated two dimensional electron systems

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