Paul Fons

2023

Discovery of a metastable van der Waals semiconductor via polymorphic crystallization of an amorphous film

Saito, Y., Hatayama, S., Chang, W. H., Okada, N., Irisawa, T., Uesugi, F., Takeguchi, M., Sutou, Y. & Fons, P., 2023, (Accepted/In press) In: Materials Horizons.

研究成果: Article › 査読

Open Access

2022

Improved Ordering of Quasi-Two-Dimensional MoS₂via an Amorphous-to-Crystal Transition Initiated from Amorphous Sulfur-Rich MoS_{2+ x}

Krbal, M., Prokop, V., Prikryl, J., Pereira, J. R., Pis, I., Kolobov, A. V., Fons, P. J., Saito, Y., Hatayama, S. & Sutou, Y., 2022 5月 4, In: Crystal Growth and Design. 22, 5, p. 3072-3079 8 p.

研究成果: Article › 査読

2 被引用数 (Scopus)

Phase control of sputter-grown large-area MoTe2 films by preferential sublimation of Te: amorphous, 1T′ and 2H phases

Hatayama, S., Saito, Y., Makino, K., Uchida, N., Shuang, Y., Mori, S., Sutou, Y., Krbal, M. & Fons, P., 2022 7月 12, In: Journal of Materials Chemistry C. 10, 29, p. 10627-10635 9 p.

研究成果: Article › 査読

Open Access

3 被引用数 (Scopus)

Photo-Induced Tellurium Segregation in MoTe₂

Fukuda, T., Kaburauchi, R., Saito, Y., Makino, K., Fons, P., Ueno, K. & Hase, M., 2022 9月, In: Physica Status Solidi - Rapid Research Letters. 16, 9, 2100633.

研究成果: Article › 査読

3 被引用数 (Scopus)

The formation of a one-dimensional van der Waals selenium crystal from the three-dimensional amorphous phase: A spectroscopic signature of van der Waals bonding

Krbal, M., Kolobov, A. V., Fons, P., Saito, Y., Belev, G. & Kasap, S., 2022 1月 17, In: Applied Physics Letters. 120, 3, 033103.

研究成果: Article › 査読

1 被引用数 (Scopus)

2021

Amorphous-to-Crystal Transition in Quasi-Two-Dimensional MoS₂: Implications for 2D Electronic Devices

Krbal, M., Prokop, V., Kononov, A. A., Pereira, J. R., Mistrik, J., Kolobov, A. V., Fons, P. J., Saito, Y., Hatayama, S., Shuang, Y., Sutou, Y., Rozhkov, S. A., Stellhorn, J. R., Hayakawa, S., Pis, I. & Bondino, F., 2021 9月 24, In: ACS Applied Nano Materials. 4, 9, p. 8834-8844 11 p.

研究成果: Article › 査読

Open Access

11 被引用数 (Scopus)

Chalcogenide Materials Engineering for Phase-Change Memory and Future Electronics Applications: From Sb–Te to Bi–Te

Saito, Y., Mitrofanov, K. V., Makino, K., Fons, P., Kolobov, A. V., Tominaga, J., Uesugi, F. & Takeguchi, M., 2021 3月, In: Physica Status Solidi - Rapid Research Letters. 15, 3, 2000414.

研究成果: Article › 査読

5 被引用数 (Scopus)

Crystalline Sb₂Te₃: Side Surfaces and Disappearance of Dirac Cones

Kolobov, A. V., Fons, P. & Saito, Y., 2021 3月, In: Physica Status Solidi - Rapid Research Letters. 15, 3, 2000418.

研究成果: Article › 査読

1 被引用数 (Scopus)

Crystallization of Ge₂Sb₂Te₅ under high hydrostatic pressures: Differences in nanoscale atomic ordering in as-deposited and pressure-induced amorphous phases

Krbal, M., Kolobov, A. V., Hanfland, M. & Fons, P., 2021 9月 5, In: Journal of Alloys and Compounds. 874, 159980.

研究成果: Article › 査読

Open Access

1 被引用数 (Scopus)

Dielectric relaxation in amorphous and crystalline Sb₂Te₃ thin films

Kononov, A. A., Castro, R. A., Saito, Y., Fons, P., Bordovsky, G. A., Anisimova, N. I. & Kolobov, A. V., 2021 5月, In: Journal of Materials Science: Materials in Electronics. 32, 10, p. 14072-14078 7 p.

研究成果: Article › 査読

4 被引用数 (Scopus)

Dimensional transformation of chemical bonding during crystallization in a layered chalcogenide material

Saito, Y., Hatayama, S., Shuang, Y., Fons, P., Kolobov, A. V. & Sutou, Y., 2021 12月, In: Scientific reports. 11, 1, 4782.

研究成果: Article › 査読

Open Access

8 被引用数 (Scopus)

Electric Fields and Interfacial Phase-Change Memory Structures

Fons, P., Kolobov, A. V. & Saito, Y., 2021 3月, In: Physica Status Solidi - Rapid Research Letters. 15, 3, 2000412.

研究成果: Article › 査読

1 被引用数 (Scopus)

Electronic modification of wet-prepared Si surfaces by a dichlorosilane reaction at elevated temperature

Bolotov, L., Fons, P., Mimura, H., Sasaki, T. & Uchida, N., 2021 12月 30, In: Applied Surface Science. 570, 151135.

研究成果: Article › 査読

Open Access

2 被引用数 (Scopus)

Evolution of the local structure surrounding nitrogen atoms upon the amorphous to crystalline phase transition in nitrogen-doped Cr₂Ge₂Te₆ phase-change material

Shuang, Y., Hatayama, S., Saito, Y., Fons, P., Kolobov, A. V., Ando, D. & Sutou, Y., 2021 8月 1, In: Applied Surface Science. 556, 149760.

研究成果: Article › 査読

3 被引用数 (Scopus)

Polymorphism of CdTe in the Few-Monolayer Limit

Kolobov, A. V., Kuznetsov, V. G., Fons, P., Saito, Y., Elets, D. I. & Hyot, B., 2021 11月, In: Physica Status Solidi - Rapid Research Letters. 15, 11, 2100358.

研究成果: Article › 査読

2 被引用数 (Scopus)

Role of the Cu-Deficient Interface in Cu (In,Ga)Se2 Thin-Film Photovoltaics with Alkali-Metal Doping

Ishizuka, S. & Fons, P. J., 2021 5月, In: Physical Review Applied. 15, 5, 054005.

研究成果: Article › 査読

7 被引用数 (Scopus)

Ultrafast scattering dynamics of coherent phonons in Bi_1-xSb_xin the Weyl semimetal phase

Komori, Y., Saito, Y., Fons, P. & Hase, M., 2021 2月, In: New Journal of Physics. 23, 2, 023034.

研究成果: Article › 査読

Open Access

1 被引用数 (Scopus)

Understanding the low resistivity of the amorphous phase of Cr2Ge2Te6 phase-change material: Experimental evidence for the key role of Cr clusters

Hatayama, S., Kobayashi, K., Saito, Y., Fons, P., Shuang, Y., Mori, S., Kolobov, A. V. & Sutou, Y., 2021 8月, In: Physical Review Materials. 5, 8, 085601.

研究成果: Article › 査読

2 被引用数 (Scopus)

2020

Dielectric Relaxation and Charge Transfer in Amorphous MoS₂ Thin Films

Kononov, A. A., Castro, R. A., Glavnaya, D. D., Anisimova, N. I., Bordovsky, G. A., Kolobov, A. V., Saito, Y. & Fons, P., 2020 11月, In: Physica Status Solidi (B) Basic Research. 257, 11, 2000114.

研究成果: Article › 査読

5 被引用数 (Scopus)

Effects of electric and magnetic fields on the resistive switching operation of iPCM

Mitrofanov, K. V., Saito, Y., Miyata, N., Fons, P., Kolobov, A. V. & Tominaga, J., 2020 5月 18, In: Applied Physics Letters. 116, 20, 201903.

研究成果: Article › 査読

1 被引用数 (Scopus)

High-quality sputter-grown layered chalcogenide films for phase change memory applications and beyond

Saito, Y., Fons, P., Kolobov, A. V., Mitrofanov, K. V., Makino, K., Tominaga, J., Hatayama, S., Sutou, Y., Hase, M. & Robertson, J., 2020 7月 8, In: Journal of Physics D: Applied Physics. 53, 28, 284002.

研究成果: Article › 査読

16 被引用数 (Scopus)

Lithium-Doping Effects in Cu(In,Ga)Se₂ Thin-Film and Photovoltaic Properties

Ishizuka, S. & Fons, P. J., 2020 6月 3, In: ACS Applied Materials and Interfaces. 12, 22, p. 25058-25065 8 p.

研究成果: Article › 査読

12 被引用数 (Scopus)

Polarization Processes in Thin Layers of Amorphous MoS₂ Obtained by RF Magnetron Sputtering

Kononov, A. A., Castro-Arata, R. A., Glavnaya, D. D., Stozharov, V. M., Dolginsev, D. M., Saito, Y., Fons, P., Anisimova, N. I. & Kolobov, A. V., 2020 5月 1, In: Semiconductors. 54, 5, p. 558-562 5 p.

研究成果: Article › 査読

Polycrystalline CuGaSe₂ thin film growth and photovoltaic devices fabricated on alkali-free and alkali-containing substrates

Ishizuka, S. & Fons, P. J., 2020 2月 15, In: Journal of Crystal Growth. 532, 125407.

研究成果: Article › 査読

6 被引用数 (Scopus)

Structural and Dielectric Study of Thin Amorphous Layers of the Ge–Sb–Te System Prepared by RF Magnetron Sputtering

Castro-Arata, R. A., Stozharov, V. M., Dolginsev, D. M., Kononov, A. A., Saito, Y., Fons, P., Tominaga, J., Anisimova, N. I. & Kolobov, A. V., 2020 2月 1, In: Semiconductors. 54, 2, p. 201-204 4 p.

研究成果: Article › 査読

Structural Metastability in Chalcogenide Semiconductors: The Role of Chemical Bonding

Kolobov, A. V., Saito, Y., Fons, P. & Krbal, M., 2020 11月, In: Physica Status Solidi (B) Basic Research. 257, 11, 2000138.

研究成果: Article › 査読

1 被引用数 (Scopus)

The importance of contacts in Cu₂GeTe₃phase change memory devices

Shindo, S., Shuang, Y., Hatayama, S., Saito, Y., Fons, P., Kolobov, A. V. & Kobayashi, K., 2020 10月 28, In: Journal of Applied Physics. 128, 16, 165105.

研究成果: Article › 査読

7 被引用数 (Scopus)

Ultrafast dynamics of the low frequency shear phonon in 1T′- MoTe 2

Fukuda, T., Makino, K., Saito, Y., Fons, P., Kolobov, A. V., Ueno, K. & Hase, M., 2020 3月 2, In: Applied Physics Letters. 116, 9, 093103.

研究成果: Article › 査読

13 被引用数 (Scopus)

2019

Cr-Triggered Local Structural Change in Cr₂Ge₂Te₆ Phase Change Material

Hatayama, S., Shuang, Y., Fons, P., Saito, Y., Kolobov, A. V., Kobayashi, K., Shindo, S., Ando, D. & Sutou, Y., 2019 11月 20, In: ACS Applied Materials and Interfaces. 11, 46, p. 43320-43329 10 p.

研究成果: Article › 査読

16 被引用数 (Scopus)

Investigation of the oxidation process in GeTe-based phase change alloy using Ge K-edge XANES spectroscopy

Krbal, M., Kolobov, A. V., Fons, P., Nitta, K., Uruga, T. & Tominaga, J., 2019, (Accepted/In press) In: Pure and Applied Chemistry.

研究成果: Article › 査読

Open Access

Origin of resistivity contrast in interfacial phase-change memory: The crucial role of Ge/Sb intermixing

Saito, Y., Kolobov, A. V., Fons, P., Mitrofanov, K. V., Makino, K., Tominaga, J. & Robertson, J., 2019 4月 1, In: Applied Physics Letters. 114, 13, 132102.

研究成果: Article › 査読

30 被引用数 (Scopus)

Photon energy dependence of Kerr rotation in GeTe/Sb₂Te₃ chalcogenide superlattices

Suzuki, T., Mondal, R., Saito, Y., Fons, P., Kolobov, A. V., Tominaga, J., Shigekawa, H. & Hase, M., 2019 7月 15, In: Journal of Physics Condensed Matter. 31, 41, 415502.

研究成果: Article › 査読

2 被引用数 (Scopus)

Similarities and Critical Differences in Heavy Alkali-Metal Rubidium and Cesium Effects on Chalcopyrite Cu(In,Ga)Se₂ Thin-Film Solar Cells

Ishizuka, S., Taguchi, N. & Fons, P. J., 2019 7月 25, In: Journal of Physical Chemistry C. 123, 29, p. 17757-17764 8 p.

研究成果: Article › 査読

31 被引用数 (Scopus)

SSC 2018: Kolobov AV: Chalcogenide van der Waals superlattices: A case example of interfacial phase-change memory

Saito, Y., Fons, P., Mitrofanov, K. V., Makino, K., Tominaga, J., Robertson, J. & Kolobov, A. V., 2019, (Accepted/In press) In: Pure and Applied Chemistry.

研究成果: Article › 査読

Open Access

2 被引用数 (Scopus)

Systematic materials design for phase-change memory with small density changes for high-endurance non-volatile memory applications

Saito, Y., Hatayama, S., Shuang, Y., Shindo, S., Fons, P., Kolobov, A. V., Kobayashi, K. & Sutou, Y., 2019 5月 1, In: Applied Physics Express. 12, 5, 051008.

研究成果: Article › 査読

5 被引用数 (Scopus)

Terahertz generation measurements of multilayered GeTe–Sb ₂ Te ₃ phase change materials

Makino, K., Kato, K., Saito, Y., Fons, P., Kolobov, A. V., Tominaga, J., Nakano, T. & Nakajima, M., 2019, In: Optics Letters. 44, 6, p. 1355-1358 4 p.

研究成果: Article › 査読

Open Access

6 被引用数 (Scopus)

Terahertz spectroscopic characterization of Ge₂Sb₂Te₅ phase change materials for photonics applications

Makino, K., Kato, K., Saito, Y., Fons, P., Kolobov, A. V., Tominaga, J., Nakano, T. & Nakajima, M., 2019, In: Journal of Materials Chemistry C. 7, 27, p. 8209-8215 7 p.

研究成果: Article › 査読

22 被引用数 (Scopus)

2018

A cascading nonlinear magneto-optical effect in topological insulators

Mondal, R., Saito, Y., Aihara, Y., Fons, P., Kolobov, A. V., Tominaga, J., Murakami, S. & Hase, M., 2018 12月 1, In: Scientific reports. 8, 1, 3908.

研究成果: Article › 査読

Open Access

8 被引用数 (Scopus)

Coherent Dirac plasmons in topological insulators

Mondal, R., Arai, A., Saito, Y., Fons, P., Kolobov, A. V., Tominaga, J. & Hase, M., 2018 4月 24, In: Physical Review B. 97, 14, 144306.

研究成果: Article › 査読

Open Access

9 被引用数 (Scopus)

Effects of RbF postdeposition treatment and heat-light soaking on the metastable acceptor activation of CuInSe₂ thin film photovoltaic devices

Ishizuka, S., Shibata, H., Nishinaga, J., Kamikawa, Y. & Fons, P. J., 2018 8月 6, In: Applied Physics Letters. 113, 6, 063901.

研究成果: Article › 査読

23 被引用数 (Scopus)

Reconfiguration of van der Waals Gaps as the Key to Switching in GeTe/Sb3 Superlattices

Kolobov, A. V., Fons, P., Saito, Y. & Tominaga, J., 2018, In: MRS Advances. 3, 57-58, p. 3413-3418 6 p.

研究成果: Article › 査読

1 被引用数 (Scopus)

Resistive switching characteristics of interfacial phase-change memory at elevated temperature

Mitrofanov, K. V., Saito, Y., Miyata, N., Fons, P., Kolobov, A. V. & Tominaga, J., 2018 4月, In: Japanese journal of applied physics. 57, 4, 04FE06.

研究成果: Article › 査読

6 被引用数 (Scopus)

Si-Doped Cu(In,Ga)Se₂ Photovoltaic Devices with Energy Conversion Efficiencies Exceeding 16.5% without a Buffer Layer

Ishizuka, S., Nishinaga, J., Iioka, M., Higuchi, H., Kamikawa, Y., Koida, T., Shibata, H. & Fons, P., 2018 4月 16, In: Advanced Energy Materials. 8, 11, 1702391.

研究成果: Article › 査読

8 被引用数 (Scopus)

Topological Phase Buried in a Chalcogenide Superlattice Monitored by Helicity-Dependent Kerr Measurement

Mondal, R., Aihara, Y., Saito, Y., Fons, P., Kolobov, A. V., Tominaga, J. & Hase, M., 2018 8月 8, In: ACS Applied Materials and Interfaces. 10, 31, p. 26781-26786 6 p.

研究成果: Article › 査読

4 被引用数 (Scopus)

Understanding the fast phase-change mechanism of tetrahedrally bonded Cu2GeTe3: Comprehensive analyses of electronic structure and transport phenomena

Kobayashi, K., Skelton, J. M., Saito, Y., Shindo, S., Kobata, M., Fons, P., Kolobov, A. V., Elliott, S., Ando, D. & Sutou, Y., 2018 5月 3, In: Physical Review B. 97, 19, 195105.

研究成果: Article › 査読

10 被引用数 (Scopus)

Zener Tunneling Breakdown in Phase-Change Materials Revealed by Intense Terahertz Pulses

Sanari, Y., Tachizaki, T., Saito, Y., Makino, K., Fons, P., Kolobov, A. V., Tominaga, J., Tanaka, K., Kanemitsu, Y., Hase, M. & Hirori, H., 2018 10月 19, In: Physical review letters. 121, 16, 165702.

研究成果: Article › 査読

Open Access

16 被引用数 (Scopus)

2017

A comparative study of the effects of sputtering deposition conditions for ZnO surface electrode layers on Cu(In,Ga)Se₂ and CuGaSe₂ solar cells

Ishizuka, S., Fons, P. J. & Shibata, H., 2017 7月 1, In: Thin Solid Films. 633, p. 49-54 6 p.

研究成果: Article › 査読

5 被引用数 (Scopus)

A Magnetoresistance Induced by a Nonzero Berry Phase in GeTe/Sb₂Te₃ Chalcogenide Superlattices

Tominaga, J., Saito, Y., Mitrofanov, K., Inoue, N., Fons, P., Kolobov, A. V., Nakamura, H. & Miyata, N., 2017 10月 26, In: Advanced Functional Materials. 27, 40, 1702243.

研究成果: Article › 査読

22 被引用数 (Scopus)

Atomic Reconfiguration of van der Waals Gaps as the Key to Switching in GeTe/Sb₂Te₃ Superlattices

Kolobov, A. V., Fons, P., Saito, Y. & Tominaga, J., 2017 9月 30, In: ACS Omega. 2, 9, p. 6223-6232 10 p.

研究成果: Article › 査読

Open Access

53 被引用数 (Scopus)

Compositional tuning in sputter-grown highly-oriented Bi-Te films and their optical and electronic structures

Saito, Y., Fons, P., Makino, K., Mitrofanov, K. V., Uesugi, F., Takeguchi, M., Kolobov, A. V. & Tominaga, J., 2017 10月 31, In: Nanoscale. 9, 39, p. 15115-15121 7 p.

研究成果: Article › 査読

15 被引用数 (Scopus)

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