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Dc Josephson Current Between an Isotropic and a D-Wave Or Extended S-Wave Partially Gapped Charge Density Wave Superconductor
Chapter 12 dc Josephson Current Between an Isotropic and a d-Wave or Extended s-Wave Partially Gapped Charge Density Wave Superconductor Alexander M. Gabovich, Suan Li Mai, Henryk Szymczak and Alexander I. Voitenko Additional information is available at the end of the chapter http://dx.doi.org/10.5772/46073 1. Introduction The discovery and further development of superconductivity is extremely interesting because of its pragmatic (practical) and purely academic reasons. At the same time, the superconductivity science is very remarkable as an important object for the study in the framework of the history and methodology of science, since all the details are well documented and well-known to the community because of numerous interviews by participants including main heroes of the research and the fierce race for higher critical temperatures of the superconducting transition, Tc. Moreover, the whole science has well-documented dates, starting from the epoch-making discovery of the superconducting transition by Heike Kamerlingh-Onnes in 1911 [1–7], although minor details of this and, unfortunately, certain subsequent discoveries in the field were obscured [8–11]. As an illustrative example of a senseless dispute on the priority, one can mention the controversy between the recognition of Bardeen-Cooper-Schrieffer (BCS) [12] and Bogoliubov [13] theories. If one looks beyond superconductivity, it is easy to find quite a number of controversies in different fields of science [14, 15]. Recent attempts [16–18] to contest and discredit the Nobel Committee decision on the discovery of graphene by Andre Geim and Kostya Novoselov [19, 20] are very typical. The reasons of a widespread disagreement concerning various scientific discoveries consist in a continuity of scientific research process and a tense competition between different groups, as happened at liquefying helium and other cryogenic gases [9, 21–24] and was reproduced in the course of studying graphite films [25, 26]. -
Physics Nobel Prize 1975
Physics Nobel Prize 1975 Nobel prize winners, left to right, A. Bohr, B. Mottelson and J. Rainwater. 0. Kofoed-Hansen (Photos Keystone Press, Photopress) Before 1949 every physicist knew that mooted, it was a major breakthrough from 1943-45. From December 1943 the atomic nucleus does not rotate. in thinking about the nucleus and he was actually in the USA. Back in The reasoning behind this erroneous opened a whole new field of research Denmark after the war, he obtained belief came from the following argu• in nuclear physics. This work has for his Ph. D. in 1954 for work on rota• ments. A quantum-mechanical rotator years been guided by the inspiration tional states in atomic nuclei. His with the moment of inertia J can take of Bohr and Mottelson. thesis was thus based on the work for up various energy levels with rota• An entire industry of nuclear which he has now been recognized at tional energies equal to h2(l + 1)| research thus began with Rainwater's the very highest level. He is Professor /8TC2J, where h is Planck's constant brief contribution to Physical Review at the Niels Bohr Institute of the ^nd I is the spin. As an example, I may in 1950 entitled 'Nuclear energy level University of Copenhagen and a nave values 0, 2, 4, ... etc. If the argument for a spheroidal nuclear member of the CERN Scientific Policy nucleus is considered as a rigid body, model'. Today a fair-sized library is Committee. then the moment of inertia J is very needed in order to contain all the Ben Mottelson was born in the USA large and the rotational energies papers written on deformed nuclei and in 1926 and has, for many years, become correspondingly very small. -
Appendix E Nobel Prizes in Nuclear Science
Nuclear Science—A Guide to the Nuclear Science Wall Chart ©2018 Contemporary Physics Education Project (CPEP) Appendix E Nobel Prizes in Nuclear Science Many Nobel Prizes have been awarded for nuclear research and instrumentation. The field has spun off: particle physics, nuclear astrophysics, nuclear power reactors, nuclear medicine, and nuclear weapons. Understanding how the nucleus works and applying that knowledge to technology has been one of the most significant accomplishments of twentieth century scientific research. Each prize was awarded for physics unless otherwise noted. Name(s) Discovery Year Henri Becquerel, Pierre Discovered spontaneous radioactivity 1903 Curie, and Marie Curie Ernest Rutherford Work on the disintegration of the elements and 1908 chemistry of radioactive elements (chem) Marie Curie Discovery of radium and polonium 1911 (chem) Frederick Soddy Work on chemistry of radioactive substances 1921 including the origin and nature of radioactive (chem) isotopes Francis Aston Discovery of isotopes in many non-radioactive 1922 elements, also enunciated the whole-number rule of (chem) atomic masses Charles Wilson Development of the cloud chamber for detecting 1927 charged particles Harold Urey Discovery of heavy hydrogen (deuterium) 1934 (chem) Frederic Joliot and Synthesis of several new radioactive elements 1935 Irene Joliot-Curie (chem) James Chadwick Discovery of the neutron 1935 Carl David Anderson Discovery of the positron 1936 Enrico Fermi New radioactive elements produced by neutron 1938 irradiation Ernest Lawrence -
Facts and Figures 2013
Facts and Figures 201 3 Contents The University 2 World ranking 4 Academic pedigree 6 Areas of impact 8 Research power 10 Spin-outs 12 Income 14 Students 16 Graduate careers 18 Alumni 20 Faculties and Schools 22 Staff 24 Estates investment 26 Visitor attractions 28 Widening participation 30 At a glance 32 1 The University of Manchester Our Strategic Vision 2020 states our mission: “By 2020, The University of Manchester will be one of the top 25 research universities in the world, where all students enjoy a rewarding educational and wider experience; known worldwide as a place where the highest academic values and educational innovation are cherished; where research prospers and makes a real difference; and where the fruits of scholarship resonate throughout society.” Our core goals 1 World-class research 2 Outstanding learning and student experience 3 Social responsibility 2 3 World ranking The quality of our teaching and the impact of our research are the cornerstones of our success. 5 The Shanghai Jiao Tong University UK Academic Ranking of World ranking Universities assesses the best teaching and research universities, and in 2012 we were ranked 40th in the world. 7 World European UK European Year Ranking Ranking Ranking ranking 2012 40 7 5 2010 44 9 5 2005 53 12 6 2004* 78* 24* 9* 40 Source: 2012 Shanghai Jiao Tong University World Academic Ranking of World Universities ranking *2004 ranking refers to the Victoria University of Manchester prior to the merger with UMIST. 4 5 Academic pedigree Nobel laureates 1900 JJ Thomson , Physics (1906) We attract the highest calibre researchers and Ernest Rutherford , Chemistry (1908) teachers, boasting 25 Nobel Prize winners among 1910 William Lawrence Bragg , Physics (1915) current and former staff and students. -
M1757 Facts and Figures 2017.Indd
FACTS AND FIGURES 2017 CONTENTS 2 The University 20 Alumni 4 World ranking 22 Faculties and Schools 6 Academic pedigree 24 Staff 8 World-class research 26 Income 10 Innovation 28 Campus investment 12 Global challenges, 30 Making a diff erence Manchester solutions 32 Widening participation 14 Students 34 Public attractions 16 Stellify 36 At a glance 18 Graduate careers 1 THE UNIVERSITY 1 OF MANCHESTER WORLD-CLASS RESEARCH Our Manchester 2020 strategic plan states our mission: “By 2020 The University of Manchester will be a world-leading university recognised globally OUR COREOUTSTANDING GOALS for the excellence of its research, outstanding LEARNING AND 3 learning and student experience, and its STUDENT EXPERIENCE social, economic and cultural impact.” SOCIAL 2 RESPONSIBILITY 2 3 WORLD RANKING The quality of our teaching and the impact of our research are the cornerstones of our success. We have risen from 78th in 2004* to 35th in 2016 in the Academic Ranking of World Universities (ARWU). League table World ranking European ranking UK ranking ARWU 35 7 5 QS 29 9 7 Times Higher 35 7 5 55 15 8 Education WORLD EUROPE UK *2004 ranking refers to the Victoria University of Manchester prior to the merger with UMIST. 4 5 John Cockcroft John Richard Hicks Economic Sciences Robert Robinson Physics (1951) Joseph E Stiglitz ACADEMIC PEDIGREE (1972) Economic Sciences (2001) Chemistry (1947) We attract the highest calibre researchers and Arthur Lewis teachers, with 25 Nobel Prize winners among CTR Wilson Walter Norman Economic Sciences Physics (1927) Arthur Harden (1979) Andre Geim our current and former staff and students. -
Heisenberg's Visit to Niels Bohr in 1941 and the Bohr Letters
Klaus Gottstein Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) Föhringer Ring 6 D-80805 Munich, Germany 26 February, 2002 New insights? Heisenberg’s visit to Niels Bohr in 1941 and the Bohr letters1 The documents recently released by the Niels Bohr Archive do not, in an unambiguous way, solve the enigma of what happened during the critical brief discussion between Bohr and Heisenberg in 1941 which so upset Bohr and made Heisenberg so desperate. But they are interesting, they show what Bohr remembered 15 years later. What Heisenberg remembered was already described by him in his memoirs “Der Teil und das Ganze”. The two descriptions are complementary, they are not incompatible. The two famous physicists, as Hans Bethe called it recently, just talked past each other, starting from different assumptions. They did not finish their conversation. Bohr broke it off before Heisenberg had a chance to complete his intended mission. Heisenberg and Bohr had not seen each other since the beginning of the war in 1939. In the meantime, Heisenberg and some other German physicists had been drafted by Army Ordnance to explore the feasibility of a nuclear bomb which, after the discovery of fission and of the chain reaction, could not be ruled out. How real was this theoretical possibility? By 1941 Heisenberg, after two years of intense theoretical and experimental investigations by the drafted group known as the “Uranium Club”, had reached the conclusion that the construction of a nuclear bomb would be feasible in principle, but technically and economically very difficult. He knew in principle how it could be done, by Uranium isotope separation or by Plutonium production in reactors, but both ways would take many years and would be beyond the means of Germany in time of war, and probably also beyond the means of Germany’s adversaries. -
Release of Documents Relating to 1941 Bohr-Heisenberg Meeting
Release of documents relating to 1941 Bohr-Heisenberg meeting DOCUMENTS RELEASED 6 FEBRUARY 2002 The family of Niels Bohr has decided to release all documents deposited at the Niels Bohr Archive, either written or dictated by Niels Bohr, pertaining specifically to the meeting between Bohr and Heisenberg in September 1941. There are in all eleven documents. The decision has been made in order to avoid possible misunderstandings regarding the contents of the documents. The documents supplement and confirm previously published statements of Bohr's recollections of the meeting, especially those of his son, Aage Bohr. The documents have now been organised, transcribed and translated into English at the Niels Bohr Archive. Because of the overwhelming interest in the material, it has been decided that the material should be published in full instead of being made available to scholars upon individual application, as is normal practice at the Niels Bohr Archive. This has been done by placing facsimiles, transcriptions and translations on this website here. An illustrated edition of the transcriptions and translations is published in the journal Naturens Verden, Vol. 84, No. 8 - 9. Reprints can be obtained from the Niels Bohr Archive for USD8/EUR8/DKK50 (prepaid). Release of documents relating to 1941 Bohr-Heisenberg meeting. Document 1. Draft of letter from Bohr to Heisenberg, never sent. In the handwriting of Niels Bohr's assistant, Aage Petersen. Undated, but written after the first publication, in 1957, of the Danish translation of Robert Jungk, Heller als Tausend Sonnen, the first edition of Jungk's book to contain Heisenberg's letter. -
Absolute Zero, Absolute Temperature. Absolute Zero Is the Lowest
Contents Radioactivity: The First Puzzles................................................ 1 The “Uranic Rays” of Henri Becquerel .......................................... 1 The Discovery ............................................................... 2 Is It Really Phosphorescence? .............................................. 4 What Is the Nature of the Radiation?....................................... 5 A Limited Impact on Scientists and the Public ............................ 6 Why 1896? .................................................................. 7 Was Radioactivity Discovered by Chance? ................................ 7 Polonium and Radium............................................................. 9 Marya Skłodowska .......................................................... 9 Pierre Curie .................................................................. 10 Polonium and Radium: Pierre and Marie Curie Invent Radiochemistry.. 11 Enigmas...................................................................... 14 Emanation from Thorium ......................................................... 17 Ernest Rutherford ........................................................... 17 Rutherford Studies Radioactivity: ˛-and ˇ-Rays.......................... 18 ˇ-Rays Are Electrons ....................................................... 19 Rutherford in Montreal: The Radiation of Thorium, the Exponential Decrease........................................... 19 “Induced” and “Excited” Radioactivity .................................... 20 Elster -
Aage Bohr Copenhagen, Denmark, 19 June 1922 - 9 Sept
Aage Bohr Copenhagen, Denmark, 19 June 1922 - 9 Sept. 2009 Nomination 17 Apr. 1978 Field Physics Title Professor of Physics at the University of Copenhagen Commemoration – Aage Bohr was born in Copenhagen a few months before his father won the Nobel Prize. His father was Niels Bohr, one of the giants of physics in the early 20th century, who was able to untangle the confusing mysteries of quantum mechanics. Aage Bohr’s childhood was one in which a pantheon of great physicists were friends visiting the family home. The remarkable generation of scientists who came to join his father in his work became uncles for him. These uncles were Henrik Kramers from the Netherlands, Oskar Klein from Sweden, Yoshio Nishina from Japan, Werner Karl Heisenberg from Germany and Wolfgang Pauli from Austria. These are all giants of physics, so Aage Bohr is an example of what science means and what political violence means. In fact, three years after he was born, Hitler ordered the deportation of Danish Jews to concentration camps but the Bohrs, along with most of the other Danish Jews, were able to escape to Sweden. I would like to recall that, despite these great tragedies and political problems, Aage Bohr was able to follow his father’s track, contributing to clarify a very important problem in nuclear physics. He was able, together with Ben Roy Mottelson, to explain why the nuclei were not perfectly spherical. I remind you that the volume of the nucleus is 1 millionth of a billion, 10-15 smaller than the atom, and when Bohr was young the general feeling about nuclear physics was that the nuclei were perfectly symmetric, perfect spheres, platonically perfect spheres, and here comes the contribution of Aage Bohr with Mottelson, because some experiments were showing that this was probably not true. -
Intermission 2017
If people don’t have a good sense of humour, they are usually not very good scientists either. Andre Geim (Nobel Prize, 2010) You will always be lucky if you know how to make friends with strange cats. --ancient proverb Change is inevitable, except from a vending machine. Eagles may soar, but weasels don’t get sucked into jet engines. Chance favors the prepared mind. Louis Pasteur To escape criticism—do nothing, say nothing, be nothing. Elbert Hubbard Imagination is more important than knowledge. For knowledge is limited to all we know and understand, while imagination embraces the entire world, and all there ever will be to know and understand. Albert Einstein The only one who really likes change is a wet baby. The First Rule of Holes: When you are in one, stop digging. Never confuse motion with action. Ernest Hemingway Basic research is what I am doing when I don’t know what I am doing. Wernher von Braun Beer is a sign that God loves us and wants us to be happy. Benjamin Franklin From error to error, one discovers truth. Sigmund Freud You can’t always get what you want. But if you try sometime You just might find You get what you need. Mick Jagger Why do we park in driveways and drive on parkways?? Genius is 1 % inspiration and 99 % perspiration. Albert Einstein We must become the change we want to see. Gandhi The only difference between a rut and a grave is depth. Time flies like an arrow. Fruit flies like a banana. -
James Rainwater 1 9 1 7 — 1 9 8 6
NATIONAL ACADEMY OF SCIENCES JAMES RAINWATER 1 9 1 7 — 1 9 8 6 A Biographical Memoir by VAL L. FITCH Any opinions expressed in this memoir are those of the author and do not necessarily reflect the views of the National Academy of Sciences. Biographical Memoir COPYRIGHT 2009 NATIONAL ACADEMY OF SCIENCES WASHINGTON, D.C. Photograph Courtesy AIP Emilio Segré Archives. JAMES RAINWATER December 9, 1917–May 31, 1986 BY VAL L . FITCH . I. RABI, THE COLUMBIA University physics department’s lead- Iing researcher, chairman, and then after his retirement, wise old man, disliked the notion that physicists had divided themselves into two groups: experimental and theoretical. “There is only Physics,” he said, “with a capital P.” His strong feeling always manifested itself in his insistence that those who did experimental theses have a rigorous grounding in theoretical subjects and that theorists know something about experiment. He had two outstanding examples of such people in the department. One was Willis Lamb, who had done his thesis with Robert Oppenheimer and after a series of notable theoretical papers had won the Nobel Prize for an experiment. Rabi never forgave Lamb for leaving Columbia and going back to his native California. And then there was Jim Rainwater, the subject of this memoir, who had done his thesis with John Dunning, a consummate experimental- ist, and had gone on to win the Nobel Prize for theoretical work. Rainwater spent his entire career at Columbia, first as a graduate student and then as a member of the faculty. He enjoyed Rabi’s highest accolades. -
Quantum Information Science
Quantum Information Science Seth Lloyd Professor of Quantum-Mechanical Engineering Director, WM Keck Center for Extreme Quantum Information Theory (xQIT) Massachusetts Institute of Technology Article Outline: Glossary I. Definition of the Subject and Its Importance II. Introduction III. Quantum Mechanics IV. Quantum Computation V. Noise and Errors VI. Quantum Communication VII. Implications and Conclusions 1 Glossary Algorithm: A systematic procedure for solving a problem, frequently implemented as a computer program. Bit: The fundamental unit of information, representing the distinction between two possi- ble states, conventionally called 0 and 1. The word ‘bit’ is also used to refer to a physical system that registers a bit of information. Boolean Algebra: The mathematics of manipulating bits using simple operations such as AND, OR, NOT, and COPY. Communication Channel: A physical system that allows information to be transmitted from one place to another. Computer: A device for processing information. A digital computer uses Boolean algebra (q.v.) to processes information in the form of bits. Cryptography: The science and technique of encoding information in a secret form. The process of encoding is called encryption, and a system for encoding and decoding is called a cipher. A key is a piece of information used for encoding or decoding. Public-key cryptography operates using a public key by which information is encrypted, and a separate private key by which the encrypted message is decoded. Decoherence: A peculiarly quantum form of noise that has no classical analog. Decoherence destroys quantum superpositions and is the most important and ubiquitous form of noise in quantum computers and quantum communication channels.