Theory of theluminescence of Cooper pairs

• Project/Area Number: 22540355
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Hokkaido University
• Principal Investigator: ASANO Yasuhiro 北海道大学, 大学院・工学研究院, 准教授 (20271637)
• Co-Investigator(Renkei-kenkyūsha): SUEMUNE Ikuo 北海道大学, 電子科学研究所, 教授 (00112178)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 超伝導 / 発光 / 物性理論 / 超伝導素子

Research Abstract

We have theoretically made clear the mechanism of luminescence of Cooper pairs on the basis of the mean-field theory of superconductivity. The characteristic features of luminescence intensity observed in superconducting pn junctions have been explained by the theory. In addition, we have investigated the electromagnetic properties of Majorana fermion which is a promising candidate of quantum information

Research Products

• [Journal Article] Majorana fermions and odd-frequency Cooper pairs in a normal-metal nanowire proximity-coupled to a topological superconductor (2013)
  • Author(s): Y. Asano, Y. Tanaka
  • Journal Title: Physical Review B Volume: 87 Issue: 10 Pages: 1184-1200
  • DOI: 10.1103/physrevb.87.104513
  • NAID: 120005228602
  • Peer Reviewed
• [Journal Article] Anomalous surface impedance in a normal-metal/superconductor junction with a spin-active interface (2012)
  • Author(s): Y. Asano, M. Ozaki, T. Habe, A.A. Golubov, Y. Tanaka
  • Journal Title: Physical Review B Volume: 86 Issue: 2
  • DOI: 10.1103/physrevb.86.024510
  • NAID: 120004405570
  • Peer Reviewed
• [Journal Article] Cooper-pair Raidative Recombination in Semiconductor Heterostructures : Impact on Quantum Optics and Optoelectronics (2012)
  • Author(s): I.Suemune, H.Sasakura, Y.Hayashi, K.Tanaka, T.Akazaki, Y.Asano, R.Inoue, H.Takayanagi, E.Hanamura, J.-H.Huh, C.Hemannstaedter, S.Odashima, H. Kumano
  • Journal Title: Japan.J.App.Phys. Volume: Vol.51 Issue: 1R Pages: 010114-010114
  • DOI: 10.1143/jjap.51.010114
  • Peer Reviewed
• [Journal Article] Photon-pair generation based on superconductivity (2012)
  • Author(s): I.Suemune
  • Journal Title: IEICE Electronics Express Volume: 9 Issue: 14 Pages: 1184-1200
  • DOI: 10.1587/elex.9.1184
  • NAID: 130001921225
  • ISSN: 1349-2543
  • Peer Reviewed
• [Journal Article] Enhanced Photon Generation in a Nb/n-InGaAs/p-InP Superconductor/Semiconductor-diode Light Emitting Device (2011)
  • Author(s): H.Sasakura, S.Kuramitsu, Y.Hayashi, K.Tanaka, T.Akazaki, E.Hanamura, R.Inoue, H.Takayanagi, Y.Asano, H.Kumano, I.Suemune
  • Journal Title: Phys.Rev.Lett. Volume: Vol.107 Issue: 15
  • DOI: 10.1103/physrevlett.107.157403
  • Peer Reviewed
• [Journal Article] Josephson effect in noncentrosymmetric superconductor junctions (2011)
  • Author(s): Y.Asano, S.Yamano
  • Journal Title: Physical Review B Volume: 84 Issue: 6 Pages: 64526-64526
  • DOI: 10.1103/physrevb.84.064526
  • NAID: 120003326037
  • Peer Reviewed
• [Journal Article] Unconventional Surface Impedance of a Normal-Metal Film Covering a Spin- TripletSuperconductor Due to Odd-Frequency Cooper Pairs (2011)
  • Author(s): Y. Asano, A A Golubov, Ya V Fominov, and Y Tanaka
  • Journal Title: Physical Review Letters Volume: Vol 107 Issue: 8
  • DOI: 10.1103/physrevlett.107.087001
  • NAID: 120003295088
  • Peer Reviewed
• [Journal Article] Theory of quantum transport in Josephson junctions with a ferromagnetic insulator (2010)
  • Author(s): S Kawabata and Y. Asano
  • Journal Title: Low Temperature Physics Volume: 36 Issue: 10 Pages: 915-919
  • DOI: 10.1063/1.3515524
  • Peer Reviewed
• [Journal Article] Tunneling between Two Helical Superconductors via Majorana Edge Channe (2010)
  • Author(s): Y. Asano, Y Tanaka, and N Nagaosa
  • Journal Title: Physical Review Letters Volume: Vol 105 Issue: 5
  • DOI: 10.1103/physrevlett.105.056402
  • Peer Reviewed
• [Journal Article] A Cooper-pair Light Emitting Diode:Temperature Dependences of Quantum Efficiency and Radiative Recombination Lifetime (2010)
  • Author(s): I Suemune, Y Hayashi, S Kuramitsu,K Tanaka, T Akazaki, H Sasakura, R Inoue, H Takayanagi,Y. Asano, E Hanamura,and H Kumano
  • Journal Title: Applied Physics Express Volume: vol 3 Issue: 5 Pages: 054001-054001
  • DOI: 10.1143/apex.3.054001
  • Peer Reviewed
• [Journal Article] A Cooper-pair Light Emitting Diode : Temperature Dependences of Quantum Efficiency and Radiative Recombination Lifetime (2010)
  • Author(s): I.Suemune, Y.Hayashi, S.Kuramitsu, K.Tanaka, T.Akazaki, H.Sasakura, R.Inoue, H.Takayanagi, Y.Asarn, K.Hanamura, H.Kumano
  • Journal Title: Applied Physics Express Volume: 3
  • Peer Reviewed
• [Journal Article] Tunneling between Two Helical Superconductors via Majorana Edge Channels (2010)
  • Author(s): Y.Asano, Y.Tanaka, N.Nagaosa
  • Journal Title: Physical Review Letters Volume: 105
  • NAID: 120002317140
  • Peer Reviewed
• [Presentation] Majorana fermions and Odd-frequencyCooper Pairs (2012)
  • Author(s): Y. Asano
  • Organizer: 9th International Conference on NewTheories,Discoveries and Applications of Superconductors and Related
  • Place of Presentation: Materials, Roma, Italy
  • Year and Date: 2012-09-17
• [Presentation] Odd-frequency Cooper Pairs in spin- triplet superconducting junctions (2012)
  • Author(s): Y. Asano
  • Organizer: The International conferenceDubna-Nano2012
  • Place of Presentation: Dubna, Russia
  • Year and Date: 2012-07-13
• [Presentation] Odd-frequency Cooper Pairs in ferromagnetic junctions (2012)
  • Author(s): Y. Asano
  • Organizer: 8th International Workshop on Nanomagnetism & Superconductivity
  • Place of Presentation: Spain
  • Year and Date: 2012-07-05
• [Presentation] Proximity Effect of Odd-frequency Cooper Pairs (2012)
  • Author(s): Y. Asano
  • Organizer: International Conference on Topological Phenomena
  • Place of Presentation: Nagoya,Japan
  • Year and Date: 2012-05-19
• [Presentation] Majorana fermions and Odd-frequency Cooper Pairs (2012)
  • Author(s): Y. Asano
  • Organizer: MTI Nonconventional Insulators Workshop 2012
  • Place of Presentation: Argonne National Laboratory
• [Presentation] Majorana fermions and Odd-frequencyCooper Pairs (2012)
  • Author(s): Y. Asano
  • Organizer: Workshop on SuperconductingNanohybrids 2012
  • Place of Presentation: San Sebastian, Spain
• [Presentation] Majorana fermions and Odd-frequency Cooper Pairs (2012)
  • Author(s): Y. Asano
  • Organizer: MTI Nonconventional Insulators Workshop 2012
  • Place of Presentation: Argonne National Laboratory, Illinois, U. S. A.
  • Invited
• [Presentation] Majorana fermions and Odd-frequency Cooper Pairs (2012)
  • Author(s): Y. asano
  • Organizer: Workshop on Superconducting Nanohybrids 2012
  • Place of Presentation: Donostia International Physics Center, San Sebastian, Spain
  • Invited
• [Presentation] Odd-frequency Cooper Pairs in spin-triplet superconducting junctions (2012)
  • Author(s): Y. asano
  • Organizer: The International conference "Dubna-Nano2012
  • Place of Presentation: Bogoliubov Laboratory of Theoretical Physics, Dubna, Russia
  • Invited
• [Presentation] Odd-frequency Cooper Pairs and TheirEffects on Surface Impedance (2011)
  • Author(s): Y. Asano
  • Organizer: Superconductivity and Magnetism, SM-2011
  • Place of Presentation: Kishinev, Moldva
  • Year and Date: 2011-10-07
• [Presentation] Anomalous Surface Impedance due toOdd-frequency Cooper Pairs (2011)
  • Author(s): Y. Asano
  • Organizer: 7th International Workshop on Nanomagnetism & Superconductivity
  • Place of Presentation: Coma-ruga, Spain
  • Year and Date: 2011-07-05
• [Presentation] Anomalous Surface Impedance due to Odd-frequency Cooper Pairs (2011)
  • Author(s): Y.Asano
  • Organizer: 7th International Workshop on Nanomagnetism & Superconductivity
  • Place of Presentation: Hotel Marvel, Coma-ruga, Spain(招待講演)
  • Year and Date: 2011-07-05
• [Presentation] Anomalous Surface Impedance due toOdd-frequency Cooper Pairs (2011)
  • Author(s): Y. Asano
  • Organizer: 8th International Conference on New Theories,Discoveries and Applications of Superconductors and Related Materials
  • Place of Presentation: Chongqing, China
  • Year and Date: 2011-06-09
• [Presentation] Anomalous Surface Impedance due to Odd-frequency Cooper Pairs (2011)
  • Author(s): Y.Asano
  • Organizer: 8th International Conference on New Theories, Discoveries and Applications of Superconductors and Related Materials
  • Place of Presentation: J.W.Marriott Hotel, Chongqing, China(招待講演)
  • Year and Date: 2011-06-09
• [Presentation] Tunneling between Two Helical superconductors via Majorana Edge Channels (2010)
  • Author(s): Y. Asano
  • Organizer: Superconductivity and Magnetism 2010
  • Place of Presentation: Paestum, Italy サレルノ大学
  • Year and Date: 2010-09-07
• [Presentation] Tunneling between Two Helical superconductors via Majorana Edge Channels (2010)
  • Author(s): Y.Asano
  • Organizer: Superconductivity and Magnetism 2010
  • Place of Presentation: Savoy Hotel, Paestum, Italy 招待講演
  • Year and Date: 2010-09-07
• [Presentation] Unusual Cooper Pairs in Superconducting Proximity Structures (2010)
  • Author(s): Y.Asano
  • Organizer: International Conference on Superconductivity and Magnetism 2010
  • Place of Presentation: Porto Bello Hotel, Antalya, Turkey 招待講演
  • Year and Date: 2010-04-26
• [Remarks]
  • URL: http://zvine-ap.eng.hokudai.ac.jp/~asano/index.html