Scimago Journal & Country Rank

Applied Physics Express



Universities and research institutions in Japan

Subject Area and Category


Japan Society of Applied Physics



Publication type



18820778, 18820786





How to publish in this journal


Applied Physics Express (APEX) is a Letters journal devoted solely to rapid dissemination of up-to-date and concise reports on new findings in applied physics. The motto of APEX is high scientific quality and prompt publication. APEX is a sister journal of the Japanese Journal of Applied Physics (JJAP) and is published by IOP Publishing on behalf of the Japan Society of Applied Physics (JSAP) APEX publishes articles dealing with the applications of physical principles as well as articles concerning the understanding of physics with particular applications in mind. As a Letters journal, emphasis will be given to developing and emerging fields in applied physics. Examples of fields of current interest include: Semiconductors, dielectrics, and organic materials Photonics, quantum electronics, optics, and spectroscopy Spintronics, superconductivity, and strongly correlated materials Device physics including quantum information processing Physics-based circuits and systems Nanoscale science and technology Crystal growth, surfaces, interfaces, thin films, and bulk materials Plasmas, applied atomic and molecular physics, and applied nuclear physics Device processing, fabrication and measurement technologies, and instrumentation Cross-disciplinary areas such as bioelectronics/photonics, biosensing, environmental/energy technologies, and MEMS. Join the conversation about this journal

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Engineering (miscellaneous)2009Q1
Engineering (miscellaneous)2010Q1
Engineering (miscellaneous)2011Q1
Engineering (miscellaneous)2012Q1
Engineering (miscellaneous)2013Q1
Engineering (miscellaneous)2014Q1
Engineering (miscellaneous)2015Q1
Engineering (miscellaneous)2016Q1
Engineering (miscellaneous)2017Q1
Engineering (miscellaneous)2018Q1
Engineering (miscellaneous)2019Q1
Engineering (miscellaneous)2020Q1
Physics and Astronomy (miscellaneous)2009Q1
Physics and Astronomy (miscellaneous)2010Q1
Physics and Astronomy (miscellaneous)2011Q1
Physics and Astronomy (miscellaneous)2012Q1
Physics and Astronomy (miscellaneous)2013Q1
Physics and Astronomy (miscellaneous)2014Q1
Physics and Astronomy (miscellaneous)2015Q1
Physics and Astronomy (miscellaneous)2016Q1
Physics and Astronomy (miscellaneous)2017Q1
Physics and Astronomy (miscellaneous)2018Q1
Physics and Astronomy (miscellaneous)2019Q1
Physics and Astronomy (miscellaneous)2020Q1

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)20080.000
Cites / Doc. (4 years)20091.510
Cites / Doc. (4 years)20102.410
Cites / Doc. (4 years)20112.963
Cites / Doc. (4 years)20122.923
Cites / Doc. (4 years)20133.070
Cites / Doc. (4 years)20142.729
Cites / Doc. (4 years)20152.609
Cites / Doc. (4 years)20162.733
Cites / Doc. (4 years)20172.933
Cites / Doc. (4 years)20183.045
Cites / Doc. (4 years)20193.330
Cites / Doc. (4 years)20203.178
Cites / Doc. (3 years)20080.000
Cites / Doc. (3 years)20091.510
Cites / Doc. (3 years)20102.410
Cites / Doc. (3 years)20112.963
Cites / Doc. (3 years)20123.274
Cites / Doc. (3 years)20133.076
Cites / Doc. (3 years)20142.654
Cites / Doc. (3 years)20152.641
Cites / Doc. (3 years)20162.772
Cites / Doc. (3 years)20173.065
Cites / Doc. (3 years)20183.170
Cites / Doc. (3 years)20193.435
Cites / Doc. (3 years)20203.252
Cites / Doc. (2 years)20080.000
Cites / Doc. (2 years)20091.510
Cites / Doc. (2 years)20102.410
Cites / Doc. (2 years)20113.481
Cites / Doc. (2 years)20123.155
Cites / Doc. (2 years)20132.926
Cites / Doc. (2 years)20142.629
Cites / Doc. (2 years)20152.588
Cites / Doc. (2 years)20162.830
Cites / Doc. (2 years)20172.981
Cites / Doc. (2 years)20183.113
Cites / Doc. (2 years)20193.541
Cites / Doc. (2 years)20203.149
Total Cites 

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Self Cites20080
Self Cites200925
Self Cites2010115
Self Cites2011180
Self Cites2012218
Self Cites2013236
Self Cites2014247
Self Cites2015184
Self Cites2016165
Self Cites2017168
Self Cites2018192
Self Cites2019276
Self Cites2020315
Total Cites20080
Total Cites2009515
Total Cites20101639
Total Cites20113037
Total Cites20123618
Total Cites20133796
Total Cites20143634
Total Cites20153607
Total Cites20163565
Total Cites20173690
Total Cites20183595
Total Cites20193875
Total Cites20204211
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

External Cites per document20080
External Cites per document20091.437
External Cites per document20102.241
External Cites per document20112.787
External Cites per document20123.083
External Cites per document20132.899
External Cites per document20142.485
External Cites per document20152.513
External Cites per document20162.648
External Cites per document20172.930
External Cites per document20183.012
External Cites per document20193.199
External Cites per document20203.015
Cites per document20080.000
Cites per document20091.510
Cites per document20102.410
Cites per document20112.963
Cites per document20123.274
Cites per document20133.076
Cites per document20142.654
Cites per document20152.641
Cites per document20162.772
Cites per document20173.065
Cites per document20183.170
Cites per document20193.435
Cites per document20203.252
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Non-citable documents20080
Non-citable documents20090
Non-citable documents20100
Non-citable documents20110
Non-citable documents20122
Non-citable documents20136
Non-citable documents20146
Non-citable documents20154
Non-citable documents20162
Non-citable documents20172
Non-citable documents20184
Non-citable documents20193
Non-citable documents20203
Citable documents20080
Citable documents2009341
Citable documents2010680
Citable documents20111025
Citable documents20121103
Citable documents20131228
Citable documents20141363
Citable documents20151362
Citable documents20161284
Citable documents20171202
Citable documents20181130
Citable documents20191125
Citable documents20201292
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Uncited documents20080
Uncited documents2009158
Uncited documents2010246
Uncited documents2011275
Uncited documents2012267
Uncited documents2013293
Uncited documents2014350
Uncited documents2015367
Uncited documents2016311
Uncited documents2017313
Uncited documents2018268
Uncited documents2019236
Uncited documents2020299
Cited documents20080
Cited documents2009183
Cited documents2010434
Cited documents2011750
Cited documents2012838
Cited documents2013941
Cited documents20141019
Cited documents2015999
Cited documents2016975
Cited documents2017891
Cited documents2018866
Cited documents2019892
Cited documents2020996
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