QPEC News 2011-2021

2021

• 2021-03-19

  "Gate-controlled BCS-BEC crossover in a two-dimensional superconductor"

  Yuji Nakagawa, Yuichi Kasahara, Takuya Nomoto, Ryotaro Arita, Tsutomu Nojima, Yoshihiro Iwasa
  Science 372, 6538.
  DOI: 10.1126/science.abb9860

  

• 2021-01-05

  "Evidence for a higher-order topological insulator in a three-dimensional material built from van der Waals stacking of bismuth-halide chains"

  Project Associate Professor Motoaki Hirayama, Quantum - Phase Electronics Center, Professor Ryotaro Arita, Department of Applied Physics, and other researchers.
  Nature Materials 20, 473–479 (2021).
  DOI: 10.1038/s41563-020-00871-7

2020

• Nov. 03, 2020
  Prof. Yoshinori Tokura receive was selected as a Bunkakorosha (Person of Cultural Merits) in 2020.
  
  Prof. Yoshinori Tokura : "Condensed matter physics"
• Nov. 03, 2020
  Prof. Masashi Kawasaki receive Medal with Purple Ribbon in Autumn 2020.
  
  Prof.Masashi Kawasaki : "Achievement on materials science"
  
• Oct. 1, 2020
  Dr.Motoaki Hirayama was appointed Project Associate Professor at Division of UT-RIKEN Cooperation.
• Sep. 16, 2020
  "Giant magneto-optical responses in magnetic Weyl semimetal Co₃Sn₂S₂"
  
  Y. Okamura, S. Minami, Y. Kato, Y. Fujishiro, Y. Kaneko, J. Ikeda, J. Muramoto, R. Kaneko, K. Ueda, V. Kocsis, N. Kanazawa, Y. Taguchi, T. Koretsune, K. Fujiwara, A. Tsukazaki, R. Arita, Y. Tokura & Y. Takahashi
  Nature Communications 11, 4619 (2020).
  DOI： 10.1038/s41467-020-18470-0
  Nature Communications Editor's Highlights
  

  

• May. 19, 2020
  "Switching of band inversion and topological surface states by charge density wave"
  
  N. Mitsuishi, Y. Sugita, M. S. Bahramy, M. Kamitani, T. Sonobe, M. Sakano, T. Shimojima, H. Takahashi, H. Sakai, K. Horiba, H. Kumigashira, K. Taguchi, K. Miyamoto, T. Okuda, S. Ishiwata, Y. Motome & K. Ishizaka
  Nature Communications 11, 2466 (2020).
  DOI： 10.1038/s41467-020-16290-w
  Nature Communications Editor's Highlights
  

  

• Mar. 30, 2020
  "Nonreciprocal transport in gate-induced polar superconductor SrTiO₃"
  
  Yuki M. Itahashi, Toshiya Ideue,*, Yu Saito, Sunao Shimizu, Takumi Ouchi, Tsutomu Nojima and Yoshihiro Iwasa
  Science Advances 6, 13.
  DOI： 10.1126/sciadv.aay9120
  

  

• Feb. 27, 2020 Closed
  QPEC recruits Project Associate Professor or Project Lecturer. Deadline: Apr. 27

2019

• Dec. 1, 2019
  Dr. Max HIRSCHBERGER was appointed lecturer at Division of UT-RIKEN Cooperation.
• Nov. 11, 2019
  Prof. Yoshihiro Iwasa received the 2019(the 65th) Nishina Memorial Prize.
  
  Prof.Yoshihiro Iwasa : "Discovery of Electric-field Induced Two-dimensional Superconductivity"
  The 2019(the 65th) Nishina Memorial Prize
• Oct. 23, 2019
  Dr. Masaki Uchida and Dr. Toshiya Ideue received the Young Scientist Award of the Physical Society of Japan.
  
  Masaki Uchida : "Experimental study on quantum transport in Dirac semimetal films of arsenide materials"
  Toshiya Ideue : "Nonreciprocal magneto transport in polar semiconductors and superconducting nanotudes"
  
• Jun.24, 2019
  "Nonreciprocal charge transport at topological insulator/superconductor interface"
  
  Kenji Yasuda, Hironori Yasuda, Tian Liang, Ryutaro Yoshimi, Atsushi Tsukazaki, Kei S. Takahashi, Naoto Nagaosa, Masashi Kawasaki & Yoshinori Tokura
  
  Nature Communications 10, 2734 (2019).
  DOI: 10.1038/s41467-019-10658-3
• Jun.20, 2019
  "Emergent photovoltaic effect in intrinsic tungsten disulphide nanomaterials"
  
  Y. J. Zhang, T. Ideue, M. Onga, F. Qin, R. Suzuki, A. Zak, R. Tenne, J. H. Smet, and Y. Iwasa
  Nature 570, 349–353 (2019).
  DOI: 10.1038/s41586-019-1303-3
  

  

• Apr. 25, 2019
  QPEC recruits Associate Professor or Lecturer. This recruit is closed.
• Mar. 6, 2019
  "Topological transitions among skyrmion- and hedgehog-lattice states in cubic chiral magnets"
  Y. Fujishiro, N. Kanazawa, T. Nakajima, X. Z. Yu, K. Ohishi, Y. Kawamura, K. Kakurai, T. Arima, H. Mitamura, A. Miyake, K. Akiba, M. Tokunaga, A. Matsuo, K. Kindo, T. Koretsune, R. Arita & Y. Tokura
  
  Nature Communications 10, 1059 (2019).
  DOI: 10.1038/s41467-019-08985-6
• Mar. 5, 2019
  "Giant thermoelectric power factor in ultrathin FeSe superconductor"
  
  Sunao Shimizu, Junichi Shiogai, Nayuta Takemori, Shiro Sakai, Hiroaki Ikeda, Ryotaro Arita, Tsutomu Nojima, Atsushi Tsukazaki & Yoshihiro Iwasa
  
  Nature Communications 10, 825 (2019).
  DOI: 10.1038/s41467-019-08784-z
• Feb. 1, 2019
  Dr. Masaki Nakano and Dr. Taro Nakajima were appointed Associate Professor at Division of UT-RIKEN Cooperation.

2018

• Dec. 18, 2018
  "Spin pumping from nuclear spin waves "
  Yuki Shiomi, Jana Lustikova, Shingo Watanabe, Daichi Hirobe, Saburo Takahashi & Eiji Saitoh
  Nature Physics 15, 22-26 (2019).
  DOI: 10.1038/s41567-018-0310-x
  

  

• Oct. 25, 2018
  Dr. Toshiya Ideue received the Ando Incentive Prize for the Study of Electronics.
  
  "Study of new transport phenomena and functionalities in noncentrosymmetric crystals"
  Toshiya Ideue
  31st Ando Incentive Prize for the Study of Electronics
• Sep. 21, 2018
  "A cascade of phase transitions in an orbitally mixed half-filled Landau level"
  J. Falson, D. Tabrea, D. Zhang, I. Sodemann, Y. Kozuka, A. Tsukazaki, M. Kawasaki, K. von Klitzing, and J. H. Smet
  Science Advances 4, 9.
  DOI: 10.1126/sciadv.eaat8742
  

  

• Jul. 31, 2018
  "Ultrafast dissolution and creation of bonds in IrTe2 induced by photodoping"
  S. Ideta, D. Zhang, A. G. Dijkstra, S. Artyukhin, S. Keskin, R. Cingolani, T. Shimojima, K. Ishizaka, H. Ishii, K. Kudo, M. Nohara and R. J. D. Miller
  Science Advances 4, 7.
  DOI: 10.1126/sciadv.aar3867
  

  

• Jun. 29, 2018
  QPEC recruits Associate Professor or Lecturer.
• May. 25, 2018
  "Gate-tuned quantum Hall states in Dirac semimetal (Cd1-xZnx)3As2"
  S. Nishihaya, M. Uchida, Y. Nakazawa, M. Kriener, Y. Kozuka, Y. Taguchi, and M. Kawasaki
  Science Advances 4, 5.
  DOI: 10.1126/sciadv.aar5668
  

  

• May. 18, 2018
  "Tensile-strain-dependent spin states in epitaxial LaCoO3 thin films"
  Y. Yokoyama, Y. Yamasaki, M. Taguchi, Y. Hirata, K. Takubo, J. Miyawaki, Y. Harada, D. Asakura, J. Fujioka, M. Nakamura, H. Daimon, M. Kawasaki, Y. Tokura, and H. Wadati
  Physical Review Letters 120, 206402.
  DOI: 10.1103/PhysRevLett.120.206402
  

  

• Feb. 27, 2018
  "Quantum phase transitions in highly crystalline two-dimensional superconductors"
  Y. Saito, T. Nojima and Y. Iwasa
  Nature Communications 9, 778 (2018).
  DOI: 10.1038/s41467-018-03275-z
  

  

2017

• Dec. 25, 2017
  "Quantum Hall states observed in thin films of Dirac semimetal Cd3As2"
  M. Uchida, Y. Nakazawa, S. Nishihaya, K. Akiba, M. Kriener, Y. Kozuka, A. Miyake, Y.Taguchi, M. Tokunaga, N. Nagaosa, Y. Tokura, and M. Kawasaki
  Nature Communications 8, 2274 (2017).
  DOI:10.1038/s41467-017-02423-1
  

  

• Dec. 21, 2017
  2018 January issue of Nature Materials
  Dr. M. S. Bahramy’s recent work on topological phases in transition metal dichalcogenides has been featured on the cover of January issue of Nature Materials.
  For the details, please see Nature Materials.
  

  

• Nov. 28, 2017
  "Ubiquitous Formation of Bulk Dirac Cones and Topological Surface States from a Single Orbital Manifold in Transition-metal Dichalcogenides"
  M.S. Bahramy, O.J. Clark, B.-J. Yang, J. Feng, L. Bawden, J. M. Riley, I. Markovic, F. Mazzola, V. Sunko, D. Biswas, S. P. Cooil, M. Jorge, J.W.Wells, M. Leandersson, T. Balasubramanian, J. Fujii, I. Vobornik, J. Rault, T. K. Kim, M. Hoesch, K. Okawa, M. Asakawa, T. Sasagawa, T. Eknapakul, W. Meevasana, and P.D.C. King
  Nature Materials 17, 21–28 (2018).
  DOI: 10.1038/NMAT5031
  For the details, please see the press release.
  

  

• Oct. 3, 2017
  "Exciton Hall effect in monolayer MoS2"
  M. Onga, Y. J. Zhang, T. Ideue, and Y. Iwasa
  Nature Materials 16, 1193–1197 (2017).
  DOI: 10.1038/nmat4996
  

  

• Aug. 18, 2017
  "Slow dynamics of electrons at a metal–Mott insulator boundary in an organic system with disorder"
  T. Itou, E. Watanabe, S. Maegawa, A. Tajima, N. Tajima, K. Kubo, R. Kato, and K. Kanoda
  Science Advances 3, 8.
  DOI: 10.1126/sciadv.1601594
  

  

• May. 18, 2017
  "Giant thermal Hall effect in multiferroics"
  T. Ideue, T. Kurumaji, S. Ishiwata, and Y. Tokura
  Nature Materials 16, 797–802 (2017).
  DOI: 10.1038/NMAT4905
  

  

• Mar. 27, 2017
  "Bulk rectification effect in a polar semiconductor"
  T. Ideue, K. Hamamoto, S. Koshikawa, M. Ezawa, S. Shimizu, Y. Kaneko, Y. Tokura, N. Nagaosa, and Y. Iwasa
  Nature Physics 13, 578-583 (2017).
  DOI: 10.1038/NPHYS4056
  

  

• Mar. 17, 2017
  "Observation of anomalous Hall effect in a non-magnetic two-dimensional electron system"
  D. Maryenko, A.S. Mishchenko, M.S. Bahramy, A. Ernst, J. Falson, Y. Kozuka, A. Tsukazaki, N. Nagaosa, and M. Kawasaki
  Nature Communications 8, 14777 (2017).
  DOI: 10.1038/NCOMMS14777
• Feb. 20, 2017
  "Upper critical field reaches 90 tesla near the Mott transition in fulleride superconductors"
  Y. Kasahara, Y. Takeuchi, R. H. Zadik, Y. Takabayashi, R. H. Colman, R. D. McDonald, M. J. Rosseinsky, K. Prassides, and Y. Iwasa
  Nature Communications 8, 14467 (2017).
  DOI: 10.1038/ncomms14467
• Feb. 17, 2017
  "Superconductivity in a chiral nanotube"
  F. Qin, W. Shi, T. Ideue, M. Yoshida, A. Zak, R. Tenne, T. Kikitsu, D. Inoue, D. Hashizume, and Y. Iwasa
  Nature Communications 8, 14465 (2017).
  DOI: 10.1038/ncomms14465
  

  

• Jan. 17, 2017
  QPEC Assessment Committee
  QPEC received a high evaluation about our research from Prof. Norio Kawakami (Kyoto University), Prof. Jean-Marc Triscone (University of Geneva), and Prof. Zhi-Xun Shen(Stanford University).
  

  

2016

• Nov. 15, 2016
  "Critical enhancement of thermopower in a chemically tuned polar semimetal MoTe2"
  H. Sakai, K. Ikeura, M. S. Bahramy, N. Ogawa, D. Hashizume, J. Fujioka, Y. Tokura, and S. Ishiwata
  Science Advances 2, e1601378 (2016)
  DOI: 10.1126/sciadv.1601378
  

  

• Oct. 28, 2016
  CEMS-QPEC Symposium on "Emergent Quantum Materials"
  QPEC will host CEMS-QPEC Symposium on "Emergent Quantum Materials" jointly with RIKEN Center for Emergent Matter Science, at Ito Hall in January 18-20 2017. For the details, please see here.
• Mar. 28, 2016
  QPEC TMD Workshop
  QPEC TMD Workshop will be held on Mach 29 (Tue) 2016 as follows:
  (Venue)
  Room 103, Bldg.6, Faculty of Engineering
  (Program)
  10:00 Ishizaka Group
  11:00 Ishiwata group
  12:00 Lunch
  13:00 Iwasa group
  14:00 Motome group
  
• Feb. 1, 2016
  "Quantum Hall effect in a bulk antiferromagnet EuMnBi2 with magnetically confined two-dimensional Dirac fermions"
  H. Masuda, H. Sakai, M. Tokunaga, Y. Yamasaki, A. Miyake, J. Shiogai, S. Nakamura, S. Awaji, A. Tsukazaki, H. Nakao, Y. Murakami, T. Arima, Y. Tokura and S. Ishiwata
  Science Advances 2, e1501117 (2016).
  DOI: 10.1126/sciadv.1501117
  

  

2015

• Dec. 8, 2015
  "2D superconductor surviving in high magnetic fields over 50 Tesla"
  Y. Saito, Y. Nakamura, M. S. Bahramy, Y. Kohama, J. T. Ye, Y. Kasahara,
  Y. Nakagawa, M. Onga, M. Tokunaga, T. Nojima, Y. Yanase and Y. Iwasa
  Nature Physics 12, 144-149 (2016).
  DOI: 10.1038/nphys3580
  

  

• Nov. 16, 2015
  "Exciton Lifetime Paradoxically Enhanced by Dissipation and Decoherence: Toward Efficient Energy Conversion of a Solar Cell"
  Y. Yamada, Y. Yamaji and M. Imada
  Physical Review Letters 115, 197701.
  DOI: 10.1103/PhysRevLett.115.197701
  

  

• Oct. 14, 2015
  "Uniaxial stress control of skyrmion phase"
  Y. Nii, T. Nakajima, A. Kikkawa, Y. Yamasaki, K. Ohishi, J. Suzuki, Y. Taguchi, T. Arima, Y. Tokura, and Y. Iwasa
  Nature Communications 6, 8539 (2015).
  DOI: 10.1038/ncomms9539
  

  

• Oct. 5, 2015
  "Discovery of a two-dimensional crystal functioning as a phase-change memristor"
  M. Yoshida, R. Suzuki, Y. J. Zhang, M. Nakano and Y. Iwasa
  Science Advances 1, 9(2015).
  DOI: 10.1126/sciadv.1500606
  

  

• Oct. 2, 2015
  "Is the ultimate 2D superconductor really superconducting? － Quantum state in an atomically thin 2D superconductor without disorder"
  Y. Saito, Y. Kasahara, J. T. Ye, Y. Iwasa and T. Nojima
  Science Express 350, 6259(2015).
  DOI: 10.1126/science.1259440
  

  

• Jun. 5, 2015
  "Emergence of "Devil's staircase": Anomalous spin ordering revealed by brilliant synchrotron x-ray"
  T. Matsuda, T. Tsuyama, T. Saito, S. Ishiwata, Y. Tokura and H. Wadati
• May. 29, 2015
  Prof. Yoshihiro Iwasa received the Honda Frontier Award
  The Honda Memorial Fundation
  

  

• May. 1, 2015
  "Experimental observation of the quantization in surface Dirac states of topological insulator -Towards the application of low-power electric devices"
  R. Yoshimi, M. Kawasaki and Y. Tokura
  Nature Communications 6, 6627 (2015).
  DOI: 10.1038/ncomms7627
  

  

• Apr. 3, 2015
  "New quantum phase in a ZnO interface of best semiconductor quality"
  J. Falson, D. Maryenko, B. Friess, D. Zhang, Y. Kozuka, A. Tsukazaki, J. Smet and M. Kawasaki
  Nature Physics 11, 347–351 (2015).
  DOI: 10.1038/nphys3259
  

  

2014

• Aug. 7, 2014
  "Magnetochiral dichroism resonant with electromagnons in a helimagnet"
  S. Kibayashi, Y. Takahashi, S. Seki and Y. Tokura
  Nature Communications 5, 4583 (2014).
  DOI: 10.1038/ncomms5583
  

  

• Aug. 1, 2014
  "A proposal of valleytronics material - Unveiling peculiar electronic states and their control in a two-dimensional material -"
  R. Suzuki, M. Sakano, Y. J. Zhang, R. Akashi, D. Morikawa, A. Harasawa, K. Yaji, K. Kuroda, K. Miyamoto, T. Okuda, K. Ishizaka, R. Arita, & Y. Iwasa
  Nature Nanotechnology 9, 611-617(2014).
  DOI: 10.1038/nnano.2014.148
  

  

• Jun. 1, 2014
  Dr. Masaki Nakano and Dr. Youhei Yamaji were appointed Lecturer at Department of Applied Physics under MERIT program
• May. 29, 2014
  Prof. Yoshinori Tokura received the Honda Memorial Award
  The Honda Memorial Fundation
• Jan. 9, 2014
  Dr. Yoshinori Tokura elected member of the Royal Swedish Academy of Sciences
  The Royal Swedish Academy of Science
  The Royal Swedish Academy of Science | Press release

2012

• Press release "Dirac-fermion-mediated ferromagnetism in a topological insulator"

  Aug.20,2012

  

  J. G. Checkelsky, J. T. Ye, Y. Onose, Y. Iwasa, Y. Tokura

  Nature Physics, 8, 729-733 (2012)

  DOI: 10.1038/nphys2388

• Press release "Collective bulk carrier delocalization driven by electrostatic surface charge accumulation"

  July 26,2012

  

  M. Nakano, K. Shibuya, D. Okuyama, T. Hatano, S. Ono, M. Kawasaki, Y. Iwasa & Y. TokuraB

  Nature 487, 459-462 (2012)

  DOI: 10.1038/nature11296

• Press release "Dynamics of multiple phases in a colossal-magnetoresistive manganite as revealed by dielectric spectroscopy"

  July 9,2012

  

  Z. Sheng, Ma. Nakamura, F. Kagawa, M. Kawasaki, Y. Tokura

  Nature Communications 3, 944 (2012)

  DOI: 10.1038/ncomms1943

2011

• International workshop in December 12-15

  Aug.19, 2011

  "Emergent Phenomena of Correlated Materials"

  Date: Dec. 12-15, 2011

  Place: ANA INTERCONTINENTAL Manza Beach Resort in Okinawa

  Registration: available now (deadline: Nov. 4, 2011)

  FIRST-QS2C Workshop official website

• Prof. Yoshinori Tokura has been selected for the "52th Fujihara Award"

  May 30, 2011

  The achievement: "Innovation of Gigantic Magneto-electronic Responses in Condensed Matters"

  The Fujihara Foundation of Science

• Press release "Electrically induced ferromagnetism ar room temperature in cobalt-doped titanium dioxide"

  May.27, 2011

  

  "Electrically induced ferromagnetism at room temperature in cobalt-doped titanium dioxide"

  Y. Yamada, K. Ueno, T. Fukumura, H. T. Yuan, H. Shimotani,Y. Iwasa, L. Gu, S. Tsukimoto, Y. Ikuhara & M. Kawasaki

  Science, 332, 6033, 1065-1067

  DOI: 10.1126/science.1202152

• Press release "Discovery of superconductivity in KTaO3 by electrostatic carrier doping"

  May 23, 2011

  

  "Discovery of superconductivity in KTaO3 by electrostatic carrier doping"

  K. Ueno, S. Nakamura, H. Shimotani, H. T. Yuan, N. Kimura,T. Nojima, H. Apki, Y. Iwasa & M. Kawasaki

  Nature Nanotechnology 6, 408-412 (2011).

  DOI: 10.1038/nnano.2011.78

• QPEC is now in its second term (10 years) from April 1st, 2011.