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1

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Stark shift of excitons and trions in two-dimensional materials (2018)

L. S. R. Cavalcante, D. R. da Costa, G. A. Farias, D. R. Reichman, and A. Chaves

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-21

Beschreibung: Author(s): L. S. R. Cavalcante, D. R. da Costa, G. A. Farias, D. R. Reichman, and A. Chaves The effect of an external in-plane electric field on neutral and charged exciton states in two-dimensional (2D) materials is theoretically investigated. These states are argued to be strongly bound, so that electron-hole dissociation is not observed up to high electric field intensities. Trions in t... [Phys. Rev. B 98, 245309] Published Thu Dec 20, 2018

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

Publiziert von American Physical Society (APS)

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2

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Electric field modified Arrhenius description of charge transport in amorphous oxide semiconductor thin film transistors (2018)

Wei Wang, Guangwei Xu, M. Delwar H. Chowdhury, Hong Wang, Jae Kwang Um, Zhuoyu Ji, Nan Gao, Zhiwei Zong, Chong Bi, Congyan Lu, Nianduan Lu, Writam Banerjee, Jiafeng Feng, Ling Li, Andrey Kadashchuk, Jin Jang, and Ming Liu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-21

Beschreibung: Author(s): Wei Wang, Guangwei Xu, M. Delwar H. Chowdhury, Hong Wang, Jae Kwang Um, Zhuoyu Ji, Nan Gao, Zhiwei Zong, Chong Bi, Congyan Lu, Nianduan Lu, Writam Banerjee, Jiafeng Feng, Ling Li, Andrey Kadashchuk, Jin Jang, and Ming Liu While it is known that the charge-carrier mobility in amorphous metal oxide semiconductor thin film transistors (TFT) deviates from Arrhenius temperature dependence, we found that the Hall mobility measured in amorphous In-Ga-Zn-O (a-IGZO) follows an Arrhenius relation surprisingly well. We explain ... [Phys. Rev. B 98, 245308] Published Thu Dec 20, 2018

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

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Polariton-enhanced exciton transport (2018)

D. M. Myers, S. Mukherjee, J. Beaumariage, D. W. Snoke, M. Steger, L. N. Pfeiffer, and K. West

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-20

Beschreibung: Author(s): D. M. Myers, S. Mukherjee, J. Beaumariage, D. W. Snoke, M. Steger, L. N. Pfeiffer, and K. West The transport distance of excitons in exciton-polariton systems has previously been assumed to be very small ( ≲ 1 μ m ). The sharp spatial profiles observed when generating polaritons by nonresonant optical excitation show that this assumption is generally true. In this paper, however, we show that the ... [Phys. Rev. B 98, 235302] Published Wed Dec 19, 2018

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

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Dynamic theory of nanophotonic control of two-dimensional semiconductor nonlinearities (2018)

S. Guazzotti, A. Pusch, D. E. Reiter, and O. Hess

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-18

Beschreibung: Author(s): S. Guazzotti, A. Pusch, D. E. Reiter, and O. Hess We introduce a Maxwell-Bloch simulation approach which self-consistently combines a microscopic description of the carrier and polarization dynamics of a transition-metal-dichalcogenide (TMDC) monolayer with a spatiotemporal full-wave time-domain simulation of Maxwell's equations on the basis of a f... [Phys. Rev. B 98, 245307] Published Mon Dec 17, 2018

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

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Control of the two-electron exchange interaction in a nanowire double quantum dot (2018)

Zhi-Hai Liu, O. Entin-Wohlman, A. Aharony, and J. Q. You

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-15

Beschreibung: Author(s): Zhi-Hai Liu, O. Entin-Wohlman, A. Aharony, and J. Q. You The two-electron exchange coupling in a nanowire double quantum dot (DQD) is shown to possess Moriya's anisotropic superexchange interaction under the influence of both the Rashba and Dresselhaus spin-orbit couplings (SOCs) and a Zeeman field. We reveal the controllability of the anisotropic exchang... [Phys. Rev. B 98, 241303(R)] Published Fri Dec 14, 2018

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

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Spin-orbit coupling effects in the quantum Hall regime probed by electron spin resonance (2018)

A. V. Shchepetilnikov, D. D. Frolov, Yu. A. Nefyodov, I. V. Kukushkin, L. Tiemann, C. Reichl, W. Dietsche, and W. Wegscheider

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-15

Beschreibung: Author(s): A. V. Shchepetilnikov, D. D. Frolov, Yu. A. Nefyodov, I. V. Kukushkin, L. Tiemann, C. Reichl, W. Dietsche, and W. Wegscheider The spin resonance of two-dimensional (2D) electrons confined in a high-quality 4.5-nm AlAs quantum well was studied in the regime of the integer quantum Hall effect. The electron g -factor extracted from the magnetic field position of the spin resonance at a fixed microwave frequency demonstrated a ... [Phys. Rev. B 98, 241302(R)] Published Fri Dec 14, 2018

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

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7

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Phase transitions induced by a lateral superlattice potential in a two-dimensional electron gas (2018)

Alice Blanchette and René Côté

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-12

Beschreibung: Author(s): Alice Blanchette and René Côté We study the phase transitions induced by a lateral superlattice potential (a metallic grid) placed on top of a two-dimensional electron gas (2DEG) formed in a semiconductor quantum well. In a quantizing magnetic field and at filling factor ν = 1 , the ground state of the 2DEG depends on the strength V ... [Phys. Rev. B 98, 245306] Published Tue Dec 11, 2018

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

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8

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Spectroscopy and level detuning of few-electron spin states in parallel InAs quantum dots (2018)

Claes Thelander, Malin Nilsson, Florinda Viñas Boström, Adam Burke, Sebastian Lehmann, Kimberly A. Dick, and Martin Leijnse

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-11

Beschreibung: Author(s): Claes Thelander, Malin Nilsson, Florinda Viñas Boström, Adam Burke, Sebastian Lehmann, Kimberly A. Dick, and Martin Leijnse We use tunneling spectroscopy to study the evolution of few-electron spin states in parallel InAs nanowire double quantum dots (QDs) as a function of level detuning and applied magnetic field. Compared to the much more studied serial configuration, parallel coupling of the QDs to source and drain gr... [Phys. Rev. B 98, 245305] Published Mon Dec 10, 2018

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

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Microwave photocurrent from the edge states of InAs/GaInSb bilayers (2018)

Jie Zhang, Tingxin Li, Rui-Rui Du, and Gerard Sullivan

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-11

Beschreibung: Author(s): Jie Zhang, Tingxin Li, Rui-Rui Du, and Gerard Sullivan We measure microwave photocurrent in devices made from InAs/GaInSb bilayers where both the insulating bulk state and conducting edge state were observed in the inverted-band regime, consistent with the theoretical prediction for a quantum spin Hall (QSH) insulator. It has been theoretically proposed... [Phys. Rev. B 98, 241301(R)] Published Mon Dec 10, 2018

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

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Sign-alternating photoconductivity and magnetoresistance oscillations induced by terahertz radiation in HgTe quantum wells (2018)

M. Otteneder, I. A. Dmitriev, S. Candussio, M. L. Savchenko, D. A. Kozlov, V. V. Bel'kov, Z. D. Kvon, N. N. Mikhailov, S. A. Dvoretsky, and S. D. Ganichev

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-08

Beschreibung: Author(s): M. Otteneder, I. A. Dmitriev, S. Candussio, M. L. Savchenko, D. A. Kozlov, V. V. Bel'kov, Z. D. Kvon, N. N. Mikhailov, S. A. Dvoretsky, and S. D. Ganichev We report on the observation of terahertz radiation induced photoconductivity and of terahertz analog of the microwave-induced resistance oscillations (MIRO) in HgTe-based quantum well (QW) structures of different width. The MIRO-like effect has been detected in QWs of 20 nm thickness with inverted ... [Phys. Rev. B 98, 245304] Published Fri Dec 07, 2018

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

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