K. Alex Muller The Nobel Prize in Physics

autobiography

K. Alex Müller received the PhD in Physics at the Swiss Federal Institute of Technology in 1958. After spending five years with Battelle Institute in Geneva as a project manager, he joined IBM Zurich Research Laboratory, Rüschlikon, Switzerland in 1963, where he continued to work in solid-state physics.

K. Alex Müller was appointed Lecturer in 1962, Titular Professor in 1970 and Professor of the University of Zurich in 1987.

He is the author of over 200 technical publications and member of the Executive Committee of the Groupement Ampère and the Ferroelectricity Group of the European Physical Society.

He is also Fellow of the American Physical Society, member of the Swiss Physical Society and the Zurich Physical Society which he presieded in 1968/69. He was Manager of the Physics Department of the IBM Zurich Research Laboratory from 1973 to 1985. In April1982 he was appointed IBM Fellow. Since summer 1985 he has devoted his time exclusively to research with his own fellowship group.

His present interests are fundamental aspects in the discovery of a high-Tc superconductor. In June 1987 Professor Müller received the honorary degree of Doctor of Science of the University of Geneva, Switzerland, in July that of the Faculty of Physics of the Technical University of Munich, West Germany, in November that of the Università degli Studi di Pavia, Italy, beginning February 1988 that of the University of Leuven, Belgium, on February 11, 1988 that of the Boston University, on May 29 that of the Tel Aviv University, Israel, on November 15, 1988 that of the Technical University of Darmstadt, West Germany, on March 8, 1989 that of the University of Nice, France, on May 12 that of the Universidad Politecnica, Madrid, Spain, on June 28,1990 that of the University of Bochum, FRG, and on November 12 that of the Università degli Studi di Roma, Italy. At the beginning of May 1989 Professor Müller was appointed Foreign Associate Member of the Academy of Sciences of the United States. On occasion of the 2nd International Superconductivity Symposium in Tsukuba, Japan, he received the Special Tsukuba Award on November 15, 1989. Together with Dr. J. Georg Bednorz, he is corecipient of the Thirteenth Fritz London Memorial Award 1987 (presented by the Fritz London Memorial Award Committee, University of Califomia, Los Angeles); the Dannie Heineman Prize 1987 (awarded by the Minna James Heineman Stiftung, Academy of Sciences Gottingen, West Germany), and the Robert Wichard Pohl Prize 1987 (conferred by the Prize Committee and the Steering Committee of the German Physical Society); the 1988 Hewlett-Packard Europhysics Prize; the Marcel-Benoist Prize 1986 conferred by the Marcel-Benoist Foundation, chaired by Flavio Cotti, Member of the Federal Council; the Nobel Prize in Physics 1987; the 1988 APS International Prize for New Materials Research, and the Minnie Rosen Award, conferred by the Ross University, New York. In 1992 he has been appointed Distinguished Member of the World Academy of Ceramics. I was born in Basle, Switzerland, on 20th April 1927. The first years of my life were spent with my parents in Salzburg, Austria, where my father was studying music. Hereafter, my mother and I moved to Dornach near Basle to the home of my grandparents, and from there to Lugano in the italian-speaking part of Switzerland. Here, I attended school and thus became fluent in the Italian language. My mother died when I was eleven years old, and I attended the Evangelical College in Schiers, situated in a mountain valley in eastern Switzerland. I remained there until I obtained my baccalaureate (Mature) seven years later. This means I arrived in Schiers just before the Second World War started, and left just after it terminated. This was indeed quite a unique situation for us youngsters. Here, in a neutral country, we followed the events of the war worldwide, even in discussion groups in the classes. These college years in Schiers were of significance for my career.

The school was liberal in the spirit of the nineteenth century, and intellectually quite demanding. We were also very active in sports, I especially so in alpine skiing. In my spare time, I became quite involved in building radios and was so fascinated that I really wanted to become an electrical engineer. However, in view of my abilities, my chemistry tutor, Dr. Saurer, eventually convinced me to study physics.

At the age of 19, I did my basic military training in the Swiss army. Upon its completion, I enrolled in the famous Physics and Mathematics Department of the Swiss Federal Institute of Technology (ETH) in Zürich. Our freshman group was more than three times the normal size. We were called the "atombomb semester", as just prior to our enrollment nuclear weapons had been used for the first time, and many students had become interested in nuclear physics. The basic course was taught by Paul Scherrer and his vivid demonstrations had a lasting effect on my approach to physics. Other courses were in part not as illuminating, so that, despite good grades, I once seriously considered switching to electrical engineering. However, Dr. W. Kanzig, responsible for the advanced physics practicum, convinced me to continue. In the later semesters, Wolfgang Pauli, whose courses and examinations I took, formed and impressed me. He was truly a wise man with a deep understanding of nature and the human being. I did my diploma work under Prof. G. Busch on the Hall effect of grey tin, now known as a semimetal, and, prompted by his fine lectures, also became acquainted with modern solid-state physics.

After obtaining my diploma, following my interest in applications, I worked for one year in the Department of Industrial Research (AFIF) of the ETH on the Eidophor large-scale display system. Then I returned to Prof. Busch's group as an assistant and started my thesis on paramagnetic resonance (EPR). At one point, Dr. H. Granicher suggested I look into the, at that time, newly synthesized double-oxide SrTiO3. I found and identified the EPR lines of impurity present in Fe3+.

In spring of 1956, just before starting the latter work, Ingeborg Marie Louise Winkler became my wife. She has always had a substantial influence in giving me confidence in all my undertakings, and over the past 30 years has been my mentor and good companion, always showing interest in my work. Our son Eric, now a dentist, was born in the summer of 1957, six months before I submitted my thesis.

After my graduation in 1958, I accepted the offer of the Battelle Memorial Institute in Geneva to join the staff. I soon became the manager of a magnetic resonance group. Some of the more interesting investigations were conducted on layered compounds, especially on radiation damage in graphite and alkalimetal graphites. The general manager in Geneva, Dr. H. Thiemann, had a strong personality, and his ever-repeated words "one should look for the extraordinary" made a lasting impression on me. Our stay in Geneva was most enjoyable for the family, especially for two reasons: the charm of the city and the birth of our daughter Silvia, now a kindergarten teacher. While in Geneva, I became a Lecturer (with the title of Professor in 1970) at the University of Zürich on the recommendation of Prof. E. Brun, who was forming a strong NMR group. Owing to this lectureship, Prof. A.P. Speiser, on the suggestion of Dr. B. Luthi, offered me a position as a research staff member at the IBM Zürich Research Laboratory, Rüschlikon, in 1963. With the exception of an almost two-year assignment, which Dr. J. Armstrong invited me to spend at IBM's Thomas J. Watson Research Center in Yorktown Heights, N.Y., I have been here ever since. For almost 15 years, research on SrTiO3 and related perovskite compounds absorbed my interest: this work, performed with Walter Berlinger, concerned the photochromic properties of various doped transition-metal ions and their chemical binding, ferroelectric and soft-mode properties, and later especially critical and multicritical phenomena of structural phase transitions. In parallel, Dr. Heinrich Rohrer was studying such effects in the antiferromagnetic system of GdAlO3. It was an intense and also, from a personal point of view, happy and satisfying time. While I was on sabbatical leave at the Research Center, he and Dr. Gerd Binnig started the Scanning Tunneling Microscope (STM) project. Just before leaving for the USA, I had been involved in the hiring of Dr. Binnig. Upon my return to Rüschlikon, I closely followed the great progress of the STM project, especially as from 1972 onwards, I was in charge of the physics groups.