Josephson π-state in a ferromagnetic insulator

نویسندگان

  • Shiro Kawabata
  • Yasuhiro Asano
  • Yukio Tanaka
  • Alexander A. Golubov
  • Satoshi Kashiwaya
چکیده

Shiro Kawabata, Yasuhiro Asano, Yukio Tanaka, Alexander A. Golubov and Satoshi Kashiwaya Nanotechnology Research Institute (NRI), National Institute of Advanced Industrial Science and Technology (AIST), and JST-CREST, Tsukuba, Ibaraki, 305-8568, Japan Department of Applied Physics, Hokkaido University, Sapporo, 060-8628, Japan Department of Applied Physics, Nagoya University, Nagoya, 464-8603, Japan Faculty of Science and Technology and MESA+ Institute of Nanotechnology, University of Twente, 7500 AE, Enshede, The Netherlands Nanoelectronics Research Institute (NeRI), AIST, Tsukuba, Ibaraki, 305-8568, Japan (Dated: January 3, 2014)

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Very large thermophase in ferromagnetic Josephson junctions.

The concept of thermophase refers to the appearance of a phase gradient inside a superconductor originating from the presence of an applied temperature bias across it. The resulting supercurrent flow may, in suitable conditions, fully counterbalance the temperature-bias-induced quasiparticle current therefore preventing the formation of any voltage drop, i.e., a thermovoltage, across the superc...

متن کامل

Realization of φ Josephson Junctions with a Ferromagnetic Interlayer

In this thesis, φ Josephson junctions based on 0-π junctions with a ferromagnetic interlayer are studied. Josephson junctions (JJs) with a ferromagnetic interlayer can have a phase drop of 0 or π in the ground state, depending on the thickness of the ferromagnet (0 JJs or π JJs). Also, 0-π JJs can be realized, where one segment of the junction (if taken separately) is in the 0 state, while the ...

متن کامل

Ferromagnetic 0–π Josephson junctions

We present a study on low-Tc superconductorinsulator-ferromagnet-superconductor (SIFS) Josephson junctions. SIFS junctions have gained considerable interest in recent years because they show a number of interesting properties for future classical and quantum computing devices. We optimized the fabrication process of these junctions to achieve a homogeneous current transport, ending up with high...

متن کامل

N ov 1 99 9 Quasiparticle energy spectrum in ferromagnetic Josephson weak links

The quasiparticles energy spectrum in clean ferromagnetic weak links between conventional superconductors is calculated. Large peaks in DOS, due to a special case of Andreev reflection at the ferromag-netic barrier, correspond to spin-splitt bound states. Their energies are obtained as a function of the barrier thickness, exchange field strength, and of the macroscopic phase difference φ at the...

متن کامل

0-pi Josephson tunnel junctions with ferromagnetic barrier.

We fabricated high quality Nb/Al2O3/Ni(0.6)Cu(0.4)/Nb superconductor-insulator-ferromagnet-superconductor Josephson tunnel junctions. Using a ferromagnetic layer with a steplike thickness, we obtain a 0-pi junction, with equal lengths and critical currents of 0 and pi parts. The ground state of our 330 microm (1.3lambda(J)) long junction corresponds to a spontaneous vortex of supercurrent pinne...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2014