akira sugimoto

Last Updated :2023/02/02

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Assistant Professor
E-mail
asugimotohiroshima-u.ac.jp

Basic Information

Academic Degrees

  • Doctor of Science, Tokyo Institute of Technology
  • Master of Science, Tokyo Institute of Technology

Research Fields

  • Mathematical and physical sciences;Physics;Condensed matter physics II

Research Keywords

  • STM
  • nano science
  • Tunneling spectroscopy
  • superconductor
  • Cuprate superconductors
  • Layered nitride superconductors
  • Iron superconductors

Educational Activity

Course in Charge

  1. 2022, Liberal Arts Education Program1, 3Term, Experimental Methods and Laboratory Work in Physics I
  2. 2022, Liberal Arts Education Program1, 1Term, Experimental Methods and Laboratory Work in Physics I
  3. 2022, Liberal Arts Education Program1, 4Term, Experimental Methods and Laboratory Work in Physics II
  4. 2022, Liberal Arts Education Program1, 2Term, Experimental Methods and Laboratory Work in Physics II
  5. 2022, Undergraduate Education, Second Semester, Laboratory Work in Natural Sciences
  6. 2022, Undergraduate Education, Second Semester, Practical Methods in Natural Sciences
  7. 2022, Undergraduate Education, 1Term, Introduction to Physical Sciences
  8. 2022, Undergraduate Education, 3Term, Laboratory Work in Material Sciences A
  9. 2022, Undergraduate Education, 3Term, Experimental Methods for Materials Sciencs A
  10. 2022, Undergraduate Education, 1Term, Laboratory Work in Material Sciences C
  11. 2022, Undergraduate Education, 1Term, Experimental Methods for Materials Sciencs C

Research Activities

Academic Papers

  1. Tunneling and break junction spectroscopy of the ambient-pressure semiconducting and superconducting gap structures in the ladder compound (Sr, Ca)(14)Cu24O41, PHYSICAL REVIEW B, 104(5), 054514, 20210819
    Link to Paper Search Results by DOI
  2. Tunneling STM/STS and break-junction spectroscopy of the Pb-doped Bi2223 superconductor, Journal of Physics: Conference Series, 1975, 012015, 20210701
  3. Comparative study of superconducting and normal-state anisotropy in Fe1+yTe0.6Se0.4 superconductors with controlled amounts of interstitial excess Fe, PHYSICAL REVIEW B, 103(22), 224506, 20210602
    Link to Paper Search Results by DOI
  4. ★, Nano-scale periodic structures and gap distribution in Pb-doped Bi2223 cuprate superconductors observed by STM/STS, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 33(9), 20200901
    Link to Paper Search Results by DOI
  5. Atomic structures and nanoscale electronic states on the surface of MgB2 superconductor observed by scanning tunneling microscopy and spectroscopy, LOW TEMPERATURE PHYSICS, 45(11), 1209-1217, 20191101
    Link to Paper Search Results by DOI
  6. ★, Multilayered cuprate superconductor Ba2Ca5Cu6O12(O1-x,F-x)(2) studied by temperature-dependent scanning tunneling microscopy and spectroscopy, PHYSICAL REVIEW B, 95(17), 174508-1-174508-11, 20170516
    Link to Paper Search Results by DOI
  7. Observation of local magnetic distribution in ramp-edge Josephson junctions, JOURNAL OF PHYSICS COMMUNICATIONS, 1(2), 20170926
    Link to Paper Search Results by DOI
  8. Doping effects on the hybridization gap and antiferromagnetic order in the Kondo semiconductor CeOs2Al10 studied by break-junction experiments, PHYSICAL REVIEW B, 95(3), 20170125
    Link to Paper Search Results by DOI
  9. Hybridization gaps and antiferromagnetic gap in the Kondo semiconductors CeT2Al10 (T = Fe and Os) observed by break- junction tunneling spectroscopy, Physical Review B, 92(20), 201113(R)/1-5, 20151124
    Link to Paper Search Results by DOI
  10. The spatial distributions of large gap-like structure on Fe(Se,Te) single crystals observed by STM/STS, Physica C, 518, 23-27, 20150501
    Link to Paper Search Results by DOI
  11. ★, Variable electronic stripe structures of the parent iron-chalcogenide superconductor Fe1+dTe observed by STM-STS, Physical Review B, 90, 224503/1-8, 20141201
  12. Tunneling spectra of break junctions involving Nb3Sn, Low Temperature Physics, 40, 1182-1186, 20140801
    Link to Paper Search Results by DOI
  13. Dynamics and mechanism of oxygen annealing in Fe1+yTe0.6Se0.4 single crystal, Scientific Reports, 4, 4585/1-7, 20140403
    Link to Paper Search Results by DOI
  14. Superconducting beta-ZrNClx probed by scanning-tunnelling and break-junction spectroscopy, Physica C, 494, 89-94, 20130601
    Link to Paper Search Results by DOI
  15. Scanning-tunneling microscopy/spectroscopy and break-junction tunneling spectroscopy of FeSe1-xTex, Low Temperature Physics, 39, 343-353, 20130301
    Link to Paper Search Results by DOI
  16. Tunneling break-junction measurements of the superconducting gap in Y2C3, Physica C, 484, 52-55, 20130101
    Link to Paper Search Results by DOI
  17. Scanning-tunneling microscopy and break-junction spectroscopy on the superconducting Fe(Se, Te) single crystal, Physica C, 484, 22-26, 20130101
    Link to Paper Search Results by DOI
  18. Nanoscale electronic structure of the layered nitride superconductors alpha-KxTiNCl and beta-HfNCly observed by scanning tunneling microscopy and spectroscopy, Physical Review B, 85, 144517/1-7, 20120417
    Link to Paper Search Results by DOI
  19. Atomic surface structures on multi-layered cuprate superconductor Ba2Ca4Cu5O10(O1-xFx)(2) observed by STM, Physica C, 471, 698-700, 20111101
    Link to Paper Search Results by DOI
  20. Scanning tunneling microscopy on iron-chalcogenide superconductor Fe(Se, Te) single crystal, Physica C, 471, 622-624, 20111101
    Link to Paper Search Results by DOI
  21. STM/STS measurements of the layered superconductor beta-HfNCl1-x, Physica C, 470, S725-S727, 20101201
    Link to Paper Search Results by DOI
  22. Tunneling break-junction spectroscopy on the superconductor NdFeAs(O0.9F0.1), Physica C, 470, S358-S359, 20101201
    Link to Paper Search Results by DOI
  23. Atomic-scale spot structures and gap distributions on apical-fluorine cuprate superconductor Ba2Ca5Cu6O12 (O1-x, F-x)(2) observed by STM/STS, Physica C, 470, S160-S162, 20101201
    Link to Paper Search Results by DOI
  24. Scanning Tunneling Spectroscopy and Break Junction Spectroscopy on Iron-Oxypnictide Superconductor NdFeAs(O0.9 F0.1), Physica C, 470, 1070-1072, 20101101
  25. Tunneling spectroscopy of layered superconductors: intercalated Li-0.48(C4H8O)(x)HfNCl and De-intercalated HfNCl0.7, European Physical Journal B, 73(4), 471-482, 20100127
    Link to Paper Search Results by DOI
  26. Scanning Tunneling Microscopy/Spectroscopy on Multi-Layered Cuprate Superconductor Ba2Ca5Cu6O12(O1-xFx)2, Physica C, 469, 1020-1023, 20090601
  27. Nanoscale Modulation of Local Barrier Height on Bi-based Cuprate Superconductors Observed by Scanning Tunneling Microscopy/Spectroscopy, Journal of the Physical Society of Japan, 77, 043705/1-4, 20080401
  28. Specific heat and Tunneling Spectroscopy study of NbB2 with maximum T-c similar to 10K, Journal of the Physical Society of Japan, 76, 094705/1-5, 20070901
    Link to Paper Search Results by DOI
  29. Enhancement of Electronic Inhomogeneity Due to the Out-of-Plane Disorder in Bi2Sr2CuO6+d Superconductors Observed by Scanning Tunneling Microscopy/Spectroscopy, Physical Review B, 74, 094503/1-5, 20060914
  30. Images of interlayer vortices and c-axis penetration depth of high-Tc YBa2Cu3O7-y superconductor, Physical Review B, 73, 224519/1-5, 20060622
  31. Correlation between modulation structure and electronic inhomogeneity on Pb doped Bi2212 single crystals, Physica C, 426, 390-395, 20050701
  32. STM/STS observations of Pb-doped Bi-2212 single crystals, Physica C, 412, 270-274, 20040501
  33. Meissner state of high-Tc oxide thin films observed by scanning superconducting quantum interference device microscopy, Applied Physics Letters, 83, 2193-2195, 20030901
  34. Quantized vortices and diamagnetic precursor to the Meissner state in high-Tc superconductors, Journal of Low Temperature Physics, 131, 451-460, 20030501
  35. Fractional Quantized Vortices as Direct Evidence of dx2-y2-Wave Pairing Symmetry up to Critical Temperature in High-Tc Cuprate Superconductors, Japanese Journal of Applied Physics (Express Letter), 41, L739-L741, 20020701
  36. Diamagnetic precursor state in High-Tc Oxide Superconductors near Optimal Doping Using Scanning Superconducting Quantum Interference Device Microscopy, Japanese Journal of Applied Physics (Express Letter), 41, L497-L499, 20020501
  37. Temperature dependence of half flux quantum in YBa2Cu3O7-y tricrystal thin film observed by scanning SQUID microscopy, Physica C, 367, 28-32, 20020215
  38. Observation of Diamagnetic Precursor to Meissner State above Tc in High-Tc La2-xSrxCuO4 Cuprates by Scanning SQUID Microscopy, Physica C, 367, 9-14, 20020215
  39. Trapping state of quantized vortices in high-Tc YBa2Cu3O7-y thin films observed by scanning SQUID microscope, Physica C, 357, 1478-1482, 20010801
  40. Evaluation of supercurrent distribution in high-Tc superconductor by scanning SQUID microscopy, Physica C, 357, 1473-1477, 20010801
  41. Diamagnetic activity above Tc as a precursor to superconductivity in La2-xSrxCuO4 thin films, Nature, 412, 420-423, 20010701
  42. Supercurrent distribution in high-Tc superconducting YBa2Cu3O7-y thin films by scanning superconducting quantum interference device microscopy, Applied Physics Letters, 77, 3069-3071, 20001101
  43. Direct Observation of Vortex Structure in a High-Tc YBa2Cu3O7-y Thin film by Bitter Decoration Method, Journal of Low Temperature Physics, 117, 1347-1351, 19991101

Invited Lecture, Oral Presentation, Poster Presentation

  1. Tunneling spectroscopy (STM/STS and Break Junction) of the local density of states on Dilute-impurity-doped iron-11 superconductors, T. Saito, H. Ohtsubo, K. Matsumoto, S. Ishimitsu, A. Sugimoto and T. Ekino, 2022/03/15, Without Invitation, Japanese
  2. Tunneling spectroscopy (STM/STS and break junction) of a-NaxTiNCl and pristine materials (III), Kaito Matsumoto, Akira Sugimoto, Masashi Tanaka, Toshikazu Ekino, 2022/03/15, Without Invitation, Japanese
  3. Study of an iron superconductor related material CuFe (Se, Te) 2 by STM/STS and break-junction tunneling, Hironori Ohtsubo, Akira Sugimoto, Toshikazu Ekino, 2022/03/15, Without Invitation, Japanese
  4. Variation of Tc and STM/STS observation of the local density of states on Dilute-impurity-doped iron-11 superconductors, Takeshi Saito, Hironori Ohtsubo, Kaito Matsumoto, Satoru Ishimitsu, Akira Sugimoto, Toshikazu Ekino, 2021/07/31, Without Invitation, Japanese
  5. Measurements of tunneling spectroscopy (STM/STS and Break Junction) on alpha-Na_x TiNCl and pristine materials (II), Kaito Matsumoto, Akira Sugimoto, Masashi Tanaka, Toshikazu Ekino, 2021/09/20, Without Invitation, Japanese
  6. Observation of iron 11-based superconductors and related materials CuFe (Se, Te) 2 by STM/STS and low-temperature cleavage (BJ) method, Hironori Ohtsubo, Akira Sugimoto, Toshikazu Ekino, 2021/09/20, Without Invitation, Japanese
  7. STM/STS study of the local density of states in Cu doped Fe(Se,Te) superconductors, Akira Sugimoto, Satoru Ishimitsu, Hironori Ohtsubo, Kaito Matsumoto, Takeshi Saito, Toshikazu Ekino, Alexander M. Gabovich, The 34th International Symposium on Superconductivity (ISS2021), 2021/12/01, Without Invitation, English
  8. Variation of Tc and spatial modulations of density of state on impurity doped Mx-Fe(SeTe) observed by STM/STS (III), Akira Sugimoto, Hironori Ohtsubo, Kaito Matsumoto, Takeshi Saito, Satoru Ishimitsu, Toshikazu Ekino, 2021/09/20, Without Invitation, Japanese
  9. The combined study of STM/STS and break junction tunneling spectroscopy of Pb doped Bi2223 superconductors, 2021/03/13, Without Invitation, Japanese
  10. STM / STS observation of iron 11-based superconductor-related material, 2021/03/12, Without Invitation, Japanese
  11. Measurements of the local density of states by low temperature scanning tunneling microscopy/spectroscopy (STM/STS) on alpha-Ax-TiNCl and related materials, 2021/03/12, Without Invitation, Japanese
  12. Tunneling STM/STS and break-junction spectroscopy of the Pb-doped Bi2223 superconductor, Akira Sugimoto, Hironori Ohtsubo, Kaito Matsumoto, Satoru Ishimitsu, Masatoshi Iwano, Toshikazu Ekino, Alexander M. Gabovich, The 33rd International Symposium on Superconductivity (ISS2020), 2020/12/02, Without Invitation, English
  13. Density of states measurement on the layered nitride chloride superconductor Ax-TiNCl(A=Na), Kaito Matsumoto, Akira Sugimoto, Masashi Tanaka, Toshikazu Ekino, 2020/08/02, Without Invitation, Japanese
  14. Single crystal preparation and STM/STS observation of iron-11 series superconductor-related material (Cu,Fe)Se0.4Te0.6, Hironori Ohtsubo, Akira Sugimoto, Toshikazu Ekino, 2020/08/02, Without Invitation, Japanese
  15. STM/STS observation of the local density of states in the vicinity of the impurity of M_x_Fe(SeTe) (M=Cu, Zn, Zn) superconductors, Satoru Ishimitsu, Akira Sugimoto, Toshikazu Ekino, 2020/03/18, Without Invitation, Japanese
  16. Nano-scale periodic structures and gap distribution on Pb-doped Bi2223 cuprate superconductors observed by STM/STS, Akira Sugimoto, Satoru Ishimitsu, Masatoshi Iwano, Toshikazu Ekino, 2020/03/18, Without Invitation, Japanese
  17. STM/STS observations on Kondo semiconductor CeOs2Al10, Akira Sugimoto, Toshikazu Ekino, Jo Kawabata, Toshiro Takabatake, SCES2019 (International Conference of Strongly Correlated Electron Systems 2019), 2019/09/18, Without Invitation, English
  18. Spatial modulations on Cu doped Fe(SeTe) observed by STM/STS(II), Akira Sugimoto, Satoshi Ishimitsu, Toshikazu Ekino, 2019/09/11, Without Invitation, Japanese
  19. Bias-voltage dependences of the peak structures on the impurity-doped Fe(SeTe) Superconductors observed by STM/STS, Satoru Ishimitsu, Akira Sugimoto, Toshikazu Ekino, 2019/09/11, Without Invitation, Japanese
  20. Doping dependence of the impurity peaks on Cu-doped Fe(Se,Te) superconductors observed by STM/STS, Satoru Ishimitsu, Akira Sugimoto, Toshikazu Ekino, 2019/03/15, Without Invitation, Japanese
  21. Spatial modulations on Cu doped Fe(SeTe) observed by STM/STS, Akira Sugimoto, Satoru Ishimitsu, Toshikazu Ekino, 2019/03/14, Without Invitation, Japanese
  22. STM/STS Observation on Cu-doped Fe(SeTe) Superconductors, Satoru Ishimitu, Akira Sugimoto, Toshikazu Ekino, JPS autumn meeting (2018), 2018/09/10, Without Invitation, Japanese
  23. STM/STS observation of the ladder-type compound Sr 14-x Ca x Cu 24 O 41 (III), Masatoshi Iwano, Akira Sugimoto, Jun Akimitsu, Toshikazu Ekino, 73 th. JPS meeting (2018), 2018/03/23, Without Invitation, Japanese
  24. STM/STM observations on Kondo Semiconductor CeOs2Al10, Akira Sugimoto, Jo Kawabata, Toshiro Takabatake, Toshikazu Ekino, 73th JPS meeting (2018), 2018/03/23, Without Invitation, Japanese
  25. Nanoscale investigations of the MgB2 Superconductor by STM/STS, Akira Sugimoto, Yuta Yanase, Takahiro Muranaka, Toshikazu Ekino, 30 th INTERNATIONAL SYMPOSIUM ON SUPERCONDUCTIVITY (ISS2017), 2017/12/13, Without Invitation, English
  26. Temperature dependence of the gaps on the 5- and 6- layered apical-F cuprate superconductors (F0245 and F0256) observed by STM/STS, Akira Sugimoto, Shunsuke Isono, Ryotaro Sekine, Kazuyasu Tokiwa, Toshikazu Ekino, 2017/09/23, Without Invitation, Japanese
  27. STM/STS observations of the gap distributions and atomic images on PbBi2223 polycrystalline superconductors, Akira Sugimoto, Masatoshi Iwano, Satoshi Ishimitsu, Toshikazu Ekino, 2017/09/06, Without Invitation, Japanese