Condensed matter physics

Publication

日本語/English

Preprints

  1. Y. Iguchi, J.A. Straquadine, C. Murthy, S.A. Kivelson, A. Singh, I.R. Fisher, and K.A. Moler
    Anomalous superfluid density in a disordered charge density wave material: Pd-intercalated ErTe3
    arXiv: 2312.15155
  2. E. Mueller, Y. Iguchi, F. Jerzembeck, J.O. Rodriguez, M. Romanelli, E. Abarca-Morales, A. Markou, N. Kikugawa, D.A. Sokolov, G. Oh, C.W. Hicks, A.P. Mackenzie, Y. Maeno, V. Madhavan, and K.A. Moler
    Superconducting Penetration Depth Through a Van Hove Singularity: Sr2RuO4 Under Uniaxial Stress
    arXiv: 2312.05130


Peer Reviewed Journal Articles

  1. R. A. Shi, B. Y. Wang, Y. Iguchi, M. Osada, K. Lee, B. H. Goodge, L. F. Kourkoutis, H. Y. Hwang, and K. A. Moler
    Scanning SQUID study of ferromagnetism and superconductivity in infinite-layer nickelates
    Phys. Rev. Mater. 8, 024802 (2024). (arXiv)

    [Editors' Suggestion]

  2. E. Mueller,Y. Iguchi, C. Watson, C. Hicks, Y. Maeno, and K. A. Moler
    Constraints on a split superconducting transition under uniaxial strain in Sr2RuO4 from scanning SQUID microscopy
    Phys. Rev. B 108, 144501 (2023). (arXiv)

    [Editors' Suggestion]

  3. Y. Iguchi, R. A. Shi, K. Kihou, C.-H. Lee, M. Barkman, A. L. Benfenati, V. Grinenko, E. Babaev, and K. A. Moler
    Superconducting vortices carrying a temperature-dependent fraction of the flux quantum
    Science 380, 1244-1247 (2023). (arXiv)

    Research Highlights: Stanford Institute for Materials and Energy Sciences (SIMES)
    Press release(by KTH), (TD Lee): EurekAlert!, PHYS.ORG
    Commentary: "Un-quantized Vortices Observed", Journal Club for Condensed Matter Physics

  4. Y. Iguchi, H. Man, S. M. Thomas, F. Ronning, P.F.S. Rosa, and K. A. Moler
    Microscopic imaging homogeneous and single phase superfluid density in UTe2
    Phys. Rev. Lett. 130, 196003 (2023).  (arXiv)

    Research Highlights: Stanford Institute for Materials and Energy Sciences (SIMES)

  5. S. Hirose, Y. Iguchi, Y. Nii, T. Kimura, and Y. Onose
    Nonreciprocal microwave response at room temperature in multiferroic Y-type hexaferrite BaSrCo2Fe11AlO22
    Appl. Phys. Lett. 121, 222401 (2022).

    [Editor's picks]

  6. Y. Iguchi, I. P. Zhang, E. D. Bauer, F. Ronning, J. R. Kirtley, and K. A. Moler
    Local observation of linear-T superfluid density and anomalous vortex dynamics in URu2Si2
    Phys. Rev. B 103, L220503 (2021).  (arXiv)

    [Letter]
    Anomalous vortex dynamics in URu2Si2 (Application Snippets:Nanopositioners at attocube)

  7. I. P. Zhang, J. C. Palmstrom, H. Noad, L. B.-V. Horn, Y. Iguchi, Z. Cui, E. Mueller, J. R. Kirtley, I. R. Fisher, and K. A. Moler
    Imaging anisotropic vortex dynamics in FeSe
    Phys. Rev. B 100, 024514 (2019).　 (arXiv)
  8. Y. Iguchi, Y. Nii, M. Kawano, H. Murakawa, N. Hanasaki, and Y. Onose
    Microwave non-reciprocity of magnon excitations in a non-centrosymmetric antiferromagnet Ba2MnGe2O7
    Phys. Rev. B 98, 064416 (2018).　 (arXiv)
  9. Y. Iguchi, Y. Nii, and Y. Onose
    Magnetoelectrical control of nonreciprocal microwave response in a multiferroic helimagnet
    Nature Commun. 8, 15252 (2017), (arXiv)

    News Release:University of Tokyo, Nikkei(2017/5/8), Nikkan(2017/5/11)

  10. Y.Nii, R. Sasaki, Y. Iguchi, and Y. Onose
    Microwave Magneto-Chiral Effect in a Noncentro-symmetric Magnet CuB2O4
    J. Phys. Soc. Jpn. 86, 024707 (2017).(arXiv)

    [Editors' choice]
    News release:"Magnet as a Switchable One-way Street", JPSJ News and Comments, 14, 01(2017)., Nikkan(2017/2/3)

  11. R. Sasaki, Y. Nii, Y. Iguchi, and Y. Onose
    Nonreciprocal propagation of surface acoustic wave in Ni/LiNbO3
    Phys. Rev. B 95, 020407(R) (2017).(arXiv)

    [Rapid Communication]

  12. Y. Kinoshita, N. Kida, M. Sotome, T. Miyamoto, Y. Iguchi, Y. Onose, and H. Okamoto
    Terahertz Radiation by Subpicosecond Magnetization Modulation in the Ferrimagnet LiFe5O8
    ACS Photon. 3, 1170 (2016).

    [Letter]

  13. Y. Iguchi, S. Uemura, K. Ueno, and Y. Onose
    Nonreciprocal magnon propagation in a noncentrosymmetric ferromagnet LiFe5O8
    Phys. Rev. B 92, 184419 (2015).  (arXiv)

    Commentary(in Japanese):Kotai Buturi vol.51 No.7(605) (2016)

  14. T. Nakajima, Y. Iguchi, H. Tamatsukuri, S. Mitsuda, Y. Yamasaki, H. Nakao, and N. Terada
    Uniaxial-Pressure Effects on Spin-Driven Lattice Distortions in Geometrically Frustrated Magnets CuFe1-xGaxO2 (x=0, 0.035)
    J. Phys. Soc. Jpn. 82, 114711 (2013).

Commentary

  1. Y. Iguchi and Y. Onose
    Nonreciprocal magnon propagation in a noncentrosymmetric ferromagnet LiFe5O8
    Kotai Buturi vol.51 No.7(605) (2016)(CiNii)
  2. Y. Iguchi and Y. Onose
    Nonreciprocal magnon propagation in a noncentrosymmetric ferromagnet
    Cryogenic Research Center, University of Tokyo, Annual report (6), 23-26 (2014)(CiNii)



Invited Talk

  1. Superconducting vortices carrying a temperature-dependent fraction of the flux quantum
    American Physical Society March Meeting 2024(Minneapolis), M41.00005
  2. Observation of Unquantized Vortices in Superconductor
    Quantum Seminar, Tsung-Dao Lee Institute (online), Oct 11, 2023
  3. Observation of Un-quantized Fluxes in Superconducting Vortices
    7th KUJI QMAT Seminar, Cambridge, Kyoto, Seoul, and Salerno (online), Sep 7, 2023
  4. Microscopic imaging homogeneous and single phase superfluid density in UTe2
    UTe2 seminar (online), Tohoku University and University of Grenoble Alpes, Dec 7, 2022
  5. Scanning SQUID microscopy on unconventional superconductors
    Onose Lab seminar, Tohoku University, Aug 29, 2022
  6. Scanning SQUID microscopy on chiral superconductor candidates
    Matsueda Lab seminar, Tohoku University, Aug 26, 2022
  7. Non-reciprocity of magnon excitations in non-centrosymmetric magnets
    59th Risou Dr group commemorative lecture, Tokyo University of Science, Tokyo(+online), 2021, 1
  8. Scanning SQUID Microscopy on Chiral Superconductor Candidates Sr2RuO4 and URu2Si2
    32nd International Symposium on Superconductivity 2019(Kyoto), PC1-1-INV
  9. Nonreciprocal microwave responses in noncentrosymmetric magnets
    NTT Basic Research Laboratories, Japan, March 22, 2017.



Contributed Talks and Posters

  1. Y. Iguchi, N. Nandi, M. Oudah, J. Bannies, M. C. Aronson, D. A. Bonn, and K. A. Moler
    Visualizing Dynamics of Vortex Clusters in Multiband Superconductor CaSb2
    American Physical Society March Meeting 2024(Minneapolis), Session Q15.00012
  2. E. Mueller, Y. Iguchi, F. Jerzembeck, J.O. Rodriguez, M. Romanelli, E. Abarca-Morales, A. Markou, N. Kikugawa, D.A. Sokolov, G. Oh, C.W. Hicks, A.P. Mackenzie, Y. Maeno, V. Madhavan, and K.A. Moler
    Superconducting Penetration Depth Through a Van Hove Singularity: Sr2RuO4 Under Uniaxial Stress
    American Physical Society March Meeting 2024(Minneapolis), Session K16.00011
  3. F. Bahrami, N. Shumiya, M. Bland, R. Chang, R. A. McLellan, K. D. Crowley, C. Yang, L. Bishop-Van Horn, Y. Iguchi, K. A. Moler, R. J Cava, A. A. Houck, and N. P. de Leon
    Microscopic source of quasiparticle loss in tantalum resonators
    American Physical Society March Meeting 2024(Minneapolis), Session M47.00011
  4. Y. Iguchi
    Superconducting vortices carrying a temperature-dependent fraction of the flux quantum, (Poster)
    Aspen Center for Physics -2024 Winter Conference Disorder and Quantum Phases of Matter, Poster Session 12
  5. Y. Iguchi, R.A. Shi, K. Kihou, C.-H. Lee, V. Grinenko, E. Babaev, and K. A. Moler
    Observation of superconducting vortices carrying a temperature-dependent fraction of the flux quantum
    American Physical Society March Meeting 2023(Las Vegas), Session Y28.00004
  6. E. Mueller,Y. Iguchi, C. Watson, C. Hicks, Y. Maeno, and K. A. Moler
    Constraints on a split superconducting transition under uniaxial strain in Sr2RuO4 from scanning SQUID microscopy
    American Physical Society March Meeting 2023(Las Vegas), Session Y22.00008
  7. R. Shi, K. Lee, B.Y. Wang, Y. Iguchi, H. Y. Hwang, K. Moler
    Direct observation of vortices in infinite-layer nickelate superconductors, (Oral)
    American Physical Society March Meeting 2023(Las Vegas), Session S19.00006
  8. Y. Iguchi
    Imaging edge fields on chiral superconductor candidate UTe2, (Oral)
    29th International Conference on Low Temperature Physic (LT29) at Sapporo, Session 22A-SF2A-03
  9. Y. Iguchi, H. Man, S.M. Thomas, F. Ronning, P. Rosa, K. Moler
    Microscopic imaging of UTe2 by scanning SQUID microscopy, (Oral)
    American Physical Society March Meeting 2022(Chicago), Session Y65.00002
  10. H. Man, Y. Iguchi, J. Bao, D.Y. Chung, M.G. Kanatzidis, K. Moler
    Superconductivity coexisting with ferromagnetic order in RbEuFe4As4 studied by scanning SQUID microscopy, (Oral)
    American Physical Society March Meeting 2022(Chicago), Session W69.00012
  11. R. Shi, B.Y. Wang, Y. Iguchi, M. Osada, K. Lee, H. Y. Hwang, K. Moler
    Coexistence of ferromagnetism and superconductivity in infinite-layer nickelates, (Oral)
    American Physical Society March Meeting 2022(Chicago), Session T57.00005
  12. Y. Iguchi, J.A. Straquadine, J.R. Kirtley, A. Singh, I.R. Fisher, and K.A. Moler
    Non BCS-like superfluid density in a disordered charge density wave material: Pd-intercalated ErTe3, (Oral)
    American Physical Society March Meeting 2021(Online), Session A47.00008, (Video)
  13. E. Mueller, Y. Iguchi, C. Watson, C.W. Hicks, Y. Maeno, and K.A. Moler
    Effect of uniaxial strain on the superconducting state of Sr2RuO4, (Oral)
    American Physical Society March Meeting 2021(Online), Session V47.00002, (Video)
  14. Y. Iguchi
    Visualizing anomalous vortex dynamics and coexisting ferromagnetic domains in URu2Si2, (Poster)
    Fundamentals of Quantum Materials(FQM) 2020 Winter School (University of Maryland) Poster session
  15. Y. Iguchi
    Local rotational symmetry breaking of superconducting phase in URu2Si2, (Oral,Poster)
    CIFAR QM(Canadian Institute of Foundation for Advanced Research Quantum Materials) Program Meeting 2019 (Vancouver), Poster session
    CIFAR QM Summer school 2019(University of British Columbia), Oral and Poster session
  16. I. Zhang, L. B.-V. Horn, J. Palmstrom, J. R. Kirtley, Y. Iguchi, I. R. Fisher, K. A. Moler
    Imaging Anisotropic Vortex Motion in FeSe, (Poster)
    XVII International Workshop on Vortex Matter in Superconductors (Vortex 2019) (Antwerp), Poster Session RSP.22
  17. Y. Iguchi, I.P. Zhang, E.D. Bauer, F. Ronning, J.R. Kirtley, and K.A. Moler
    Study of chiral d-wave superconductor candidate URu2Si2 by using scanning SQUID microscopy, (Oral)
    American Physical Society March Meeting 2019(Boston), Session X08.00010
  18. I. Zhang, L. B.-V. Horn, J. Palmstrom, J. R. Kirtley, Y. Iguchi, I. R. Fisher, K. A. Moler
    Anisotropic Vortex Pinning in Single Crystal FeSe, (Oral)
    American Physical Society March Meeting 2019(Boston), Session X10.00010
  19. Y. Iguchi, Y. Nii, H. Murakawa, N. Hanasaki, and Y. Onose
    Non-reciprocal microwave response of antiferromagnetic magnons in a multiferroic Ba2MnGe2O7, (Oral)
    American Physical Society March Meeting 2018(Los Angeles), Session H23.00009
  20. Y. Iguchi, Y. Nii, and Y. Onose
    Microwave response of antiferromagnetic magnons in a multiferroic Ba2MnGe2O7, (Poster)
    Junjiro Kanamori Memorial International Symposium 2017(Tokyo), Poster session:P56
  21. Y. Iguchi, Y. Nii, and Y. Onose
    Magnetoelectrical control of nonreciprocal microwave response in a multiferroic helimagnet, (Oral)
    American Physical Society March Meeting 2017(New Orleans), Session F50.00008
  22. R. Sasaki, Y. Nii, Y. Iguchi, and Y. Onose
    Nonreciprocal propagation of surface acoustic waves in Ni/LiNbO3, (Oral)
    American Physical Society March Meeting 2017(New Orleans), Session A47.00013
  23. Y. Iguchi
    Magnetoelectrical control of nonreciprocal microwave response in a multiferroic helimagnet, (Poster)
    CEMS-QPEC Symposium on Emergent Quantum Materials 2017(Tokyo), Poster session:P29
  24. Y. Iguchi, S. Uemura, K. Ueno, and Y. Onose
    Nonreciprocal magnon propagation in a noncentrosymmetric ferromagnet LiFe5O8, (Oral)
    American Physical Society March Meeting 2016(Baltimore), Session B6.00002



Contributed Talks (in Japanese)

  1. Y. Iguchi, R.A. Shi, K. Kihou, C.-H. Lee, M. Barkman, A. Benfenati, V. Grinenko, E. Babaev, and K. A. Moler
    Superconducting vortices carrying a temperature-dependent fraction of the flux quantum, (Oral)
    The Physical Society of Japan, 78th Ann. Meeting (2023) (Tohoku Univ.), Div.6, 16aB101-5
  2. Y. Iguchi, H. Man, S.M. Thomas, F. Ronning, J. Ishizuka, M. Sigrist, P.F.S. Rosa, and K.A. Moler
    Scanning SQUID microscopy study of local superconducting state of chiral superconductor candidate UTe2, (Oral)
    The Physical Society of Japan, Autumn Meeting 2022(Tokyo Tech), Division 8, 12pW521-5
  3. Y. Iguchi, J.A. Straquadine, J.R. Kirtley, A. Singh, I.R. Fisher, and K.A. Moler
    Non BCS-like superfluid density in a disordered charge density wave material: Pd-intercalated ErTe3, (Oral)
    The Physical Society of Japan, 76th Annual Meeting (Online), Division 6, 14aF1-1
  4. Y. Iguchi, I.P. Zhang, E.D. Bauer, F. Ronning, J.R. Kirtley, and K.A. Moler
    Study of chiral d-wave superconductor candidate URu2Si2 by using scanning SQUID microscopy, (Oral)
    The Physical Society of Japan, 74th Annual Meeting (Kyushu Univ.), Division 8, 14aS302-8
  5. Yusuke Iguchi, Yoichi Nii, and Yoshinori Onose
    Microwave response to antiferromagnetic resonance in multiferroics Ba2MnGe2O7, (Oral)
    The Physical Society of Japan, Autumn Meeting 2017 (Iwate Univ.), Division 8, 23aE31-8
  6. Yoshiaki Hamahara, Yoichi Nii, Yusuke Iguchi, and Yoshinori Onose
    Research of microwave nonreciprocity on a multiferroic using a superconducting circuit resonator,(Oral)
    The Physical Society of Japan, Autumn Meeting 2017 (Iwate Univ.), Division 8, 22pF21-11
  7. Yusuke Iguchi, Yoichi Nii, and Yoshinori Onose
    Electric control of nonreciprocal microwave response in ferroelectric spiral magnet, (Oral)
    The Physical Society of Japan, Autumn Meeting 2016 (Kanazawa Univ.), Division 3, 13aAA-8
  8. Y. Nii, R. Sasaki, Y. Iguchi, and Y. Onose
    Microwave response of a noncentrosymmetric magnet CuB2O4, (Oral)
    The Physical Society of Japan, Annual (71st) Meeting (Tohoku Gakuin Univ.), Division 3, 22aAU-2
  9. R. Sasaki, Y. Nii, Y. Iguchi, and Y. Onose
    Magnetoelastic coupling and nonreciprocity of surface acoustic wave on Ni/LiNbO3, (Oral)
    The Physical Society of Japan, Annual(71st) Meeting (Tohoku Gakuin Univ.), Division 3, 19aAU-11
  10. Y. Kinoshita, N. Kida, T. Miyamoto, H. Yada, Y. Iguchi, Y. Onose, and H. Okamoto
    Magnetization dynamics in ferrimagnetic LiFe5O8 extracted from analyzing terahertz radiation by fast magnetization modulation via femtosecond laser irradiation, (Oral)
    The Physical Society of Japan, Autumn Meeting 2015 (Kansai Univ.), Division 5, 16pCF-9
  11. Yusuke Iguchi, Souichiro Uemura, Kazunori Ueno, and Yoshinori Onose
    Nonreciprocal microwave response on large wave number magnon modes in a noncentrosymmetric ferromagnet LiFe5O8, (Oral)
    The Physical Society of Japan, Annual (70th) Meeting (Waseda Univ.), Division 3, 24aAD-6
  12. Y. Kinoshita, N. Kida, T. Miyamoto, H. Yada, Y. Iguchi, Y. Onose, and H. Okamoto
    Terahertz radiation due to ultrafast modulation of magnetization in ferrimagnetic LiFe5O8, (Oral)
    The Physical Society of Japan, Annual (70th) Meeting (Waseda Univ.), Division 5, 23pCP-6
  13. Yusuke Iguchi and Yoshinori Onose
    Microwave response of noncentrosymmetric magnet LiFe5O8,(Oral)
    The Physical Society of Japan, Annual (69th) Meeting (Tokai Univ.), Division 3 and 8, 29pAY-6
  14. Taro Nakajima, Yusuke Iguchi, Hiromu Tamatsukuri, Setsuo Mitsuda, Yuichi Yamasaki, Hironori Nakao, and Noriki Terada
    X-ray diffraction measurements on frustrated magnets CuFe1-xGaxO2 (x=0,0.035) under uniaxial pressure, (Oral)
    The Physical Society of Japan, Autumn Meeting 2013 (Tokushima Univ.), Division 3, 25aKF-4



Outreach

  1. Discover the Dream Technology: Do you know about Superconductivity?
    Lecture for 8 visiting 4th and 5th grade students from Japan, Apr 2024
    Stanford University, CA, USA
  2. Methods of Measuring Superconductors at Stanford
    Voluntary lecture and Lab tour for 5 visiting high school students from Japan and Gun High school, Mar 2024
    Stanford University, CA, USA
  3. Unleashing Children's Potential: How to Raise Kids Who Love Math!
    ECC webinar, Dec 2023 (Archive)
  4. The Interaction Crisis: Reshaping synchronous online education
    Invited speaker, SpatialChat webinar, Nov 2023
  5. Methods of Measuring Superconductors at Stanford
    JASS special lecture for 14 visiting senior students from Dept. of Business, Ritsumeikan University, Sep 2023
    Stanford University, CA, USA
  6. Unlocking the Mystery of Magnetic Trapping: Insights from Superconducting Vortices
    12th Japanese Academic Seminars at Stanford, July 2023
    Stanford University, CA, USA
  7. Build LED light-up circuits
    nano@stanford, Guest Teacher, May 2022
    Greenleaf TK-8 School, CA, USA
  8. Q&A session about State of Matter
    Skype a Scientist, Guest Teacher, Dec 2021
    Chardon Primary School, NE, USA(on Skype)
  9. Persistent electrical current
    Berkeley Japanese Academic Network 73rd gathering, 2021
    UC Berkeley, CA, USA(on Zoom)
  10. Learning Superconductivity by Imaging
    11th Stanford Visitors Meetup, 2019
    Stanford University, CA, USA
  11. Looking into the world of superconductivity by using a scanning SQUID microscope
    Berkeley Japanese Academic Network 56th gathering, 2019
    UC Berkeley, CA, USA
  12. Study of "unconventional" superconductors using scanning SQUID microscopy
    JSPS Researcher Gatherings 2019 summer, research introduction, 2019 (Oral)
    Berkeley, CA, USA

(C) 2018 YIguchi-condmat
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