Efficient Terahertz Harmonic Generation with Coherent Acceleration of Electrons in the Dirac Semimetal Cd3As2

被引：130

作者：

Cheng, Bing ^{[1
,2
]}

Kanda, Natsuki ^{[3
]}

Ikeda, Tatsuhiko N. ^{[3
]}

Matsuda, Takuya ^{[3
]}

Xia, Peiyu ^{[3
]}

Schumann, Timo ^{[4
]}

Stemmer, Susanne ^{[4
]}

Itatani, Jiro ^{[3
]}

Armitage, N. P. ^{[1
,2
]}

Matsunaga, Ryusuke ^{[3
,5
]}

机构：

[1] Johns Hopkins Univ, Inst Quantum Matter, Baltimore, MD 21218 USA

[2] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[3] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[4] Univ Calif Santa Barbara, Mat Dept, Santa Barbara, CA 93106 USA

[5] Japan Sci & Technol Agcy, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 3320012, Japan

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 124卷 / 11期

关键词：

Harmonic generation - Terahertz spectroscopy - Terahertz waves - Light sources;

D O I：

10.1103/PhysRevLett.124.117402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report strong terahertz (similar to 10(12) Hz) high harmonic generation at room temperature in thin films of Cd3As2, a three-dimensional Dirac semimetal. Third harmonics are detectable with a tabletop light source and can be as strong as 100 V/cm by applying a fundamental field of 6.5 kV/cm inside the film, demonstrating an unprecedented efficiency for terahertz frequency conversion. Our time-resolved terahertz spectroscopy and calculations also clarify the microscopic mechanism of the nonlinearity originating in the coherent acceleration of Dirac electrons in momentum space. Our results provide clear insights for nonlinear currents of Dirac electrons driven by the terahertz field under the influence of scattering, paving the way toward novel devices for high-speed electronics and photonics based on topological semimetals.

引用

页数：6

共 44 条

[1] Magneto-Optical Signature of Massless Kane Electrons in Cd3As2 [J].

Akrap, A. ;

Hakl, M. ;

Tchoumakov, S. ;

Crassee, I. ;

Kuba, J. ;

Goerbig, M. O. ;

Homes, C. C. ;

Caha, O. ;

Novak, J. ;

Teppe, F. ;

Desrat, W. ;

Koohpayeh, S. ;

Wu, L. ;

Armitage, N. P. ;

Nateprov, A. ;

Arushanov, E. ;

Gibson, Q. D. ;

Cava, R. J. ;

van der Marel, D. ;

Piot, B. A. ;

Faugeras, C. ;

Martinez, G. ;

Potemski, M. ;

Orlita, M. .

PHYSICAL REVIEW LETTERS, 2016, 117 (13)

[2] Optimizing third-harmonic generation at terahertz frequencies in graphene [J].

Al-Naib, Ibraheem ;

Poschmann, Max ;

Dignam, Marc M. .

PHYSICAL REVIEW B, 2015, 91 (20)

[3] High harmonic generation in undoped graphene: Interplay of inter- and intraband dynamics [J].

Al-Naib, Ibraheem ;

Sipe, J. E. ;

Dignam, Marc M. .

PHYSICAL REVIEW B, 2014, 90 (24)

[4] Screening effect and impurity scattering in monolayer graphene [J].

Ando, Tsuneya .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2006, 75 (07)

[5] Multi-day rhythms modulate seizure risk in epilepsy [J].

Baud, Maxime O. ;

Kleen, Jonathan K. ;

Mirro, Emily A. ;

Andrechak, Jason C. ;

King-Stephens, David ;

Chang, Edward F. ;

Rao, Vikram R. .

NATURE COMMUNICATIONS, 2018, 9

[6] Ultrafast terahertz response of multilayer graphene in the nonperturbative regime [J].

Bowlan, P. ;

Martinez-Moreno, E. ;

Reimann, K. ;

Elsaesser, T. ;

Woerner, M. .

PHYSICAL REVIEW B, 2014, 89 (04)

[7]

Cheng B., ARXIV190500309

[8] Third-order nonlinearity of graphene: Effects of phenomenological relaxation and finite temperature [J].

Cheng, J. L. ;

Vermeulen, N. ;

Sipe, J. E. .

PHYSICAL REVIEW B, 2015, 91 (23)

[9] Attosecond science [J].

Corkum, P. B. ;

Krausz, Ferenc .

NATURE PHYSICS, 2007, 3 (06) :381-387

[10] 3D Dirac semimetal Cd3As2: A review of material properties [J].

Crassee, I. ;

Sankar, R. ;

Lee, W. -L. ;

Akrap, A. ;

Orlita, M. .

PHYSICAL REVIEW MATERIALS, 2018, 2 (12)

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